{"nodes": [{"id": "0", "name": "baryon density"}, {"id": "1", "name": "big bang theory"}, {"id": "2", "name": "cosmological constant"}, {"id": "3", "name": "dark energy"}, {"id": "4", "name": "steady state"}, {"id": "5", "name": "scale factor"}, {"id": "6", "name": "brane cosmology"}, {"id": "7", "name": "line element"}, {"id": "8", "name": "power law"}, {"id": "9", "name": "loop quantum cosmology"}, {"id": "10", "name": "angular momentum"}, {"id": "11", "name": "hilbert space"}, {"id": "12", "name": "quantum mechanics"}, {"id": "13", "name": "cosmological principle"}, {"id": "14", "name": "gravitational constant"}, {"id": "15", "name": "phase transition"}, {"id": "16", "name": "quantum cosmology"}, {"id": "17", "name": "einstein equations"}, {"id": "18", "name": "cold dark matter"}, {"id": "19", "name": "path integral"}, {"id": "20", "name": "general relativity"}, {"id": "21", "name": "phase space"}, {"id": "22", "name": "loop quantum gravity"}, {"id": "23", "name": "big bang"}, {"id": "24", "name": "big crunch"}, {"id": "25", "name": "quantum field theory"}, {"id": "26", "name": "cosmic microwave background radiation"}, {"id": "27", "name": "negative pressure"}, {"id": "28", "name": "big bounce"}, {"id": "29", "name": "cosmic rays"}, {"id": "30", "name": "dark matter"}, {"id": "31", "name": "energy density"}, {"id": "32", "name": "field theory"}, {"id": "33", "name": "quantum gravity"}, {"id": "34", "name": "statistical mechanics"}, {"id": "35", "name": "string theory"}, {"id": "36", "name": "gravitational lensing"}, {"id": "37", "name": "perturbation theory"}, {"id": "38", "name": "particle physics"}, {"id": "39", "name": "gravitational wave"}, {"id": "40", "name": "quantum theory"}, {"id": "41", "name": "black hole"}, {"id": "42", "name": "planck mass"}, {"id": "43", "name": "friedmann equations"}, {"id": "44", "name": "bianchi ix"}, {"id": "45", "name": "vacuum energy"}, {"id": "46", "name": "renormalization group"}, {"id": "47", "name": "magnetic field"}, {"id": "48", "name": "big bang nucleosynthesis"}, {"id": "49", "name": "fred hoyle"}, {"id": "50", "name": "structure formation"}, {"id": "51", "name": "hubble constant"}, {"id": "52", "name": "cosmic microwave background"}, {"id": "53", "name": "gravitational collapse"}, {"id": "54", "name": "planck scale"}, {"id": "55", "name": "cosmic inflation"}, {"id": "56", "name": "standard model"}, {"id": "57", "name": "big rip"}, {"id": "58", "name": "nuclear physics"}, {"id": "59", "name": "shock wave"}, {"id": "60", "name": "initial condition"}, {"id": "61", "name": "quantum state"}, {"id": "62", "name": "wilkinson microwave anisotropy probe"}, {"id": "63", "name": "scalar field"}, {"id": "64", "name": "parallel universes"}, {"id": "65", "name": "detailed balance"}, {"id": "66", "name": "wave function"}, {"id": "67", "name": "ads cft"}, {"id": "68", "name": "effective field theory"}, {"id": "69", "name": "planck length"}, {"id": "70", "name": "white hole"}], "evolve_edges": [{"2000": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2000}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 2.0, "year": 2000}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2000}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2000}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2000}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 1.0, "year": 2000}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 1.0, "year": 2000}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 4.0, "year": 2000}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 1.0, "year": 2000}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2000}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 1.0, "year": 2000}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 2.0, "year": 2000}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 1.0, "year": 2000}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2000}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 1.0, "year": 2000}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2000}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2000}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 1.0, "year": 2000}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2000}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 1.0, "year": 2000}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 1.0, "year": 2000}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2000}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 4.0, "year": 2000}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 2.0, "year": 2000}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2000}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 1.0, "year": 2000}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2000}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 1.0, "year": 2000}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 2.0, "year": 2000}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2000}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2000}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 2.0, "year": 2000}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2000}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2000}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 1.0, "year": 2000}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 1.0, "year": 2000}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2000}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2000}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 1.0, "year": 2000}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2000}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2000}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 2.0, "year": 2000}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 1.0, "year": 2000}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 6.0, "year": 2000}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 1.0, "year": 2000}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 5.0, "year": 2000}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 2.0, "year": 2000}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 1.0, "year": 2000}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 2.0, "year": 2000}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 3.0, "year": 2000}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 2.0, "year": 2000}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 4.0, "year": 2000}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 2.0, "year": 2000}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 2.0, "year": 2000}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 2.0, "year": 2000}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2000}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 1.0, "year": 2000}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2000}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 1.0, "year": 2000}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 6.0, "year": 2000}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 3.0, "year": 2000}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 3.0, "year": 2000}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2000}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 4.0, "year": 2000}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 2.0, "year": 2000}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2000}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2000}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2000}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2000}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 1.0, "year": 2000}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2000}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2000}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2000}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 2.0, "year": 2000}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2000}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2000}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2000}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 2.0, "year": 2000}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2000}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2000}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 1.0, "year": 2000}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2000}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2000}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2000}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2000}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2000}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 1.0, "year": 2000}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2000}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 1.0, "year": 2000}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2000}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2000}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2000}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2000}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 4.0, "year": 2000}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2000}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2000}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2000}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2000}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 1.0, "year": 2000}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2000}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2000}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2000}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 2.0, "year": 2000}]}, {"2001": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2001}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 6.0, "year": 2001}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 1.0, "year": 2001}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2001}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2001}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 2.0, "year": 2001}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2001}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 1.0, "year": 2001}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 1.0, "year": 2001}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2001}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2001}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2001}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2001}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 1.0, "year": 2001}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 6.0, "year": 2001}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 1.0, "year": 2001}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2001}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2001}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 2.0, "year": 2001}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 3.0, "year": 2001}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 1.0, "year": 2001}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 2.0, "year": 2001}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 1.0, "year": 2001}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2001}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 1.0, "year": 2001}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 2.0, "year": 2001}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 2.0, "year": 2001}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2001}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 3.0, "year": 2001}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2001}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2001}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2001}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 2.0, "year": 2001}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 1.0, "year": 2001}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2001}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 1.0, "year": 2001}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 4.0, "year": 2001}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2001}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2001}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 3.0, "year": 2001}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2001}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2001}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2001}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 4.0, "year": 2001}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 1.0, "year": 2001}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2001}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2001}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 2.0, "year": 2001}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2001}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 1.0, "year": 2001}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 7.0, "year": 2001}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2001}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2001}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 5.0, "year": 2001}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2001}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2001}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2001}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2001}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2001}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 5.0, "year": 2001}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2001}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 1.0, "year": 2001}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 3.0, "year": 2001}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2001}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2001}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 1.0, "year": 2001}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 1.0, "year": 2001}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 2.0, "year": 2001}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 4.0, "year": 2001}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 2.0, "year": 2001}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 2.0, "year": 2001}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 5.0, "year": 2001}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2001}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2001}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2001}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 1.0, "year": 2001}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 2.0, "year": 2001}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 1.0, "year": 2001}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2001}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2001}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 1.0, "year": 2001}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 2.0, "year": 2001}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 2.0, "year": 2001}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 2.0, "year": 2001}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 5.0, "year": 2001}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 1.0, "year": 2001}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2001}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 2.0, "year": 2001}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 1.0, "year": 2001}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 7.0, "year": 2001}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 5.0, "year": 2001}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 2.0, "year": 2001}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 3.0, "year": 2001}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2001}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 4.0, "year": 2001}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2001}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 2.0, "year": 2001}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 6.0, "year": 2001}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 5.0, "year": 2001}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 3.0, "year": 2001}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 7.0, "year": 2001}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 3.0, "year": 2001}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 4.0, "year": 2001}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 15.0, "year": 2001}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 1.0, "year": 2001}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 5.0, "year": 2001}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 2.0, "year": 2001}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2001}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 4.0, "year": 2001}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 1.0, "year": 2001}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 10.0, "year": 2001}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 3.0, "year": 2001}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 5.0, "year": 2001}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2001}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 10.0, "year": 2001}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 1.0, "year": 2001}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 2.0, "year": 2001}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2001}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2001}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2001}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2001}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2001}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2001}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 2.0, "year": 2001}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 1.0, "year": 2001}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2001}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2001}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2001}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2001}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2001}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2001}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 2.0, "year": 2001}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2001}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 2.0, "year": 2001}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2001}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 2.0, "year": 2001}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2001}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2001}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2001}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2001}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2001}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2001}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 2.0, "year": 2001}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 3.0, "year": 2001}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2001}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2001}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 1.0, "year": 2001}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2001}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2001}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 6.0, "year": 2001}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 2.0, "year": 2001}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2001}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2001}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 3.0, "year": 2001}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2001}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2001}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 3.0, "year": 2001}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2001}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 1.0, "year": 2001}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2001}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2001}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2001}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2001}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2001}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2001}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2001}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 1.0, "year": 2001}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2001}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2001}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2001}]}, {"2002": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2002}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 8.0, "year": 2002}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 1.0, "year": 2002}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2002}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2002}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 4.0, "year": 2002}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 1.0, "year": 2002}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2002}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 1.0, "year": 2002}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 1.0, "year": 2002}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2002}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2002}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2002}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2002}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 1.0, "year": 2002}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 8.0, "year": 2002}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 1.0, "year": 2002}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2002}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2002}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 3.0, "year": 2002}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 3.0, "year": 2002}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2002}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 2.0, "year": 2002}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2002}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2002}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 1.0, "year": 2002}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2002}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 3.0, "year": 2002}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 4.0, "year": 2002}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2002}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 9.0, "year": 2002}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2002}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2002}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2002}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 3.0, "year": 2002}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2002}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 1.0, "year": 2002}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 4.0, "year": 2002}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2002}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 1.0, "year": 2002}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2002}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 4.0, "year": 2002}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2002}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2002}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2002}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2002}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2002}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 5.0, "year": 2002}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2002}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2002}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2002}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 3.0, "year": 2002}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2002}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2002}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2002}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2002}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 1.0, "year": 2002}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 1.0, "year": 2002}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 7.0, "year": 2002}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2002}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2002}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2002}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2002}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2002}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2002}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2002}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2002}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2002}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 10.0, "year": 2002}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2002}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 3.0, "year": 2002}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2002}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 1.0, "year": 2002}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 3.0, "year": 2002}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 1.0, "year": 2002}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2002}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2002}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 1.0, "year": 2002}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2002}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2002}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2002}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2002}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 9.0, "year": 2002}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2002}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2002}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2002}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 4.0, "year": 2002}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 3.0, "year": 2002}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2002}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2002}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2002}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 2.0, "year": 2002}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 2.0, "year": 2002}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 1.0, "year": 2002}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2002}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 3.0, "year": 2002}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2002}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 3.0, "year": 2002}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 13.0, "year": 2002}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 2.0, "year": 2002}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 9.0, "year": 2002}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 3.0, "year": 2002}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 1.0, "year": 2002}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 10.0, "year": 2002}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 9.0, "year": 2002}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 6.0, "year": 2002}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 8.0, "year": 2002}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2002}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 8.0, "year": 2002}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2002}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 2.0, "year": 2002}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 7.0, "year": 2002}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 5.0, "year": 2002}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 4.0, "year": 2002}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 8.0, "year": 2002}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2002}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 3.0, "year": 2002}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 4.0, "year": 2002}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 28.0, "year": 2002}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2002}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 5.0, "year": 2002}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 2.0, "year": 2002}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 17.0, "year": 2002}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 4.0, "year": 2002}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 2.0, "year": 2002}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 1.0, "year": 2002}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 13.0, "year": 2002}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 3.0, "year": 2002}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 7.0, "year": 2002}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2002}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 11.0, "year": 2002}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 1.0, "year": 2002}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 1.0, "year": 2002}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2002}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 3.0, "year": 2002}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 1.0, "year": 2002}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 3.0, "year": 2002}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2002}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2002}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2002}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2002}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2002}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2002}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2002}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 3.0, "year": 2002}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 1.0, "year": 2002}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2002}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2002}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2002}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2002}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2002}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2002}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2002}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 2.0, "year": 2002}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2002}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 2.0, "year": 2002}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2002}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 2.0, "year": 2002}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2002}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2002}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2002}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2002}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2002}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2002}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2002}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2002}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2002}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2002}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2002}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2002}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2002}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 4.0, "year": 2002}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2002}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2002}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2002}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2002}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 6.0, "year": 2002}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 2.0, "year": 2002}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2002}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2002}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2002}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 4.0, "year": 2002}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2002}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2002}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 3.0, "year": 2002}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2002}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 1.0, "year": 2002}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2002}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2002}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2002}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2002}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2002}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 3.0, "year": 2002}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2002}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2002}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2002}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 3.0, "year": 2002}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 1.0, "year": 2002}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2002}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2002}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2002}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2002}]}, {"2003": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2003}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2003}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 13.0, "year": 2003}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 1.0, "year": 2003}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 1.0, "year": 2003}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 4.0, "year": 2003}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 16.0, "year": 2003}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2003}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 5.0, "year": 2003}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2003}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 2.0, "year": 2003}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 8.0, "year": 2003}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2003}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 1.0, "year": 2003}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2003}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2003}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 1.0, "year": 2003}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 1.0, "year": 2003}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 1.0, "year": 2003}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2003}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2003}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2003}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2003}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 1.0, "year": 2003}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 11.0, "year": 2003}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 1.0, "year": 2003}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2003}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2003}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 3.0, "year": 2003}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 4.0, "year": 2003}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2003}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 2.0, "year": 2003}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2003}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2003}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2003}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 10.0, "year": 2003}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2003}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 10.0, "year": 2003}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 1.0, "year": 2003}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2003}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 1.0, "year": 2003}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2003}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2003}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 4.0, "year": 2003}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 1.0, "year": 2003}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2003}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 2.0, "year": 2003}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 1.0, "year": 2003}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 9.0, "year": 2003}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 2.0, "year": 2003}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 3.0, "year": 2003}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2003}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2003}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 6.0, "year": 2003}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 2.0, "year": 2003}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2003}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2003}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2003}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 1.0, "year": 2003}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2003}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 2.0, "year": 2003}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2003}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 3.0, "year": 2003}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2003}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 1.0, "year": 2003}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2003}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 1.0, "year": 2003}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 6.0, "year": 2003}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 1.0, "year": 2003}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2003}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2003}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2003}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 4.0, "year": 2003}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2003}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2003}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2003}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2003}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2003}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2003}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 1.0, "year": 2003}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 8.0, "year": 2003}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2003}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2003}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2003}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 1.0, "year": 2003}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2003}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2003}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2003}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2003}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2003}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2003}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 12.0, "year": 2003}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2003}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 3.0, "year": 2003}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2003}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 1.0, "year": 2003}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 3.0, "year": 2003}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 1.0, "year": 2003}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2003}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 3.0, "year": 2003}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2003}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 3.0, "year": 2003}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 2.0, "year": 2003}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 3.0, "year": 2003}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 3.0, "year": 2003}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2003}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 5.0, "year": 2003}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2003}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 2.0, "year": 2003}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2003}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2003}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2003}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2003}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 14.0, "year": 2003}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 1.0, "year": 2003}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2003}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2003}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2003}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 2.0, "year": 2003}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 4.0, "year": 2003}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 1.0, "year": 2003}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 4.0, "year": 2003}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2003}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2003}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2003}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 2.0, "year": 2003}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 2.0, "year": 2003}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 1.0, "year": 2003}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 1.0, "year": 2003}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 3.0, "year": 2003}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2003}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 3.0, "year": 2003}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 17.0, "year": 2003}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 3.0, "year": 2003}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 10.0, "year": 2003}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 2.0, "year": 2003}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 7.0, "year": 2003}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 2.0, "year": 2003}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 15.0, "year": 2003}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 12.0, "year": 2003}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 9.0, "year": 2003}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 11.0, "year": 2003}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2003}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 11.0, "year": 2003}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2003}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 2.0, "year": 2003}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 10.0, "year": 2003}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 5.0, "year": 2003}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 4.0, "year": 2003}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 10.0, "year": 2003}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2003}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 4.0, "year": 2003}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 4.0, "year": 2003}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 39.0, "year": 2003}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2003}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 10.0, "year": 2003}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 3.0, "year": 2003}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 36.0, "year": 2003}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 5.0, "year": 2003}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 4.0, "year": 2003}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 1.0, "year": 2003}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 16.0, "year": 2003}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 1.0, "year": 2003}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 5.0, "year": 2003}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 9.0, "year": 2003}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2003}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 2.0, "year": 2003}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 12.0, "year": 2003}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 1.0, "year": 2003}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 3.0, "year": 2003}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2003}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 5.0, "year": 2003}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 2.0, "year": 2003}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2003}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 1.0, "year": 2003}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 5.0, "year": 2003}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2003}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2003}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2003}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2003}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2003}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2003}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2003}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2003}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2003}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2003}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 3.0, "year": 2003}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 2.0, "year": 2003}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2003}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2003}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2003}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2003}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2003}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2003}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2003}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 5.0, "year": 2003}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2003}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 2.0, "year": 2003}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2003}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 3.0, "year": 2003}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 2.0, "year": 2003}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2003}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 5.0, "year": 2003}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2003}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2003}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2003}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2003}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2003}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2003}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2003}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2003}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2003}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2003}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2003}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2003}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2003}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2003}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2003}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2003}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 4.0, "year": 2003}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2003}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2003}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2003}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2003}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2003}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2003}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2003}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 8.0, "year": 2003}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 2.0, "year": 2003}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2003}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2003}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2003}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 4.0, "year": 2003}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2003}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2003}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 3.0, "year": 2003}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 2.0, "year": 2003}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2003}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 3.0, "year": 2003}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2003}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2003}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2003}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2003}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 2.0, "year": 2003}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2003}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 4.0, "year": 2003}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 1.0, "year": 2003}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2003}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2003}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2003}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 3.0, "year": 2003}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 3.0, "year": 2003}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 1.0, "year": 2003}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2003}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2003}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 1.0, "year": 2003}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2003}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2003}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 2.0, "year": 2003}]}, {"2004": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2004}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2004}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 17.0, "year": 2004}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 1.0, "year": 2004}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 1.0, "year": 2004}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2004}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 5.0, "year": 2004}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 19.0, "year": 2004}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2004}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 9.0, "year": 2004}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2004}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 2.0, "year": 2004}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 9.0, "year": 2004}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2004}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 1.0, "year": 2004}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2004}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2004}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2004}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 3.0, "year": 2004}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 3.0, "year": 2004}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 1.0, "year": 2004}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2004}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2004}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2004}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2004}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 1.0, "year": 2004}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2004}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 2.0, "year": 2004}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 17.0, "year": 2004}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 1.0, "year": 2004}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2004}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2004}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 6.0, "year": 2004}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 5.0, "year": 2004}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2004}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 2.0, "year": 2004}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 2.0, "year": 2004}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2004}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2004}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2004}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 1.0, "year": 2004}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2004}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2004}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2004}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2004}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 15.0, "year": 2004}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2004}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 15.0, "year": 2004}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 2.0, "year": 2004}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2004}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 1.0, "year": 2004}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 1.0, "year": 2004}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 2.0, "year": 2004}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2004}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2004}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2004}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2004}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2004}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2004}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 3.0, "year": 2004}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 8.0, "year": 2004}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2004}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 1.0, "year": 2004}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2004}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2004}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 2.0, "year": 2004}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2004}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 10.0, "year": 2004}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 3.0, "year": 2004}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 3.0, "year": 2004}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 1.0, "year": 2004}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2004}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2004}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2004}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 9.0, "year": 2004}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2004}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 2.0, "year": 2004}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2004}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2004}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2004}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2004}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 1.0, "year": 2004}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 7.0, "year": 2004}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 2.0, "year": 2004}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2004}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 8.0, "year": 2004}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2004}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2004}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2004}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 2.0, "year": 2004}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2004}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 1.0, "year": 2004}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2004}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2004}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 2.0, "year": 2004}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2004}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2004}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2004}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2004}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2004}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2004}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2004}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2004}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2004}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2004}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2004}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2004}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2004}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2004}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2004}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2004}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 9.0, "year": 2004}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2004}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2004}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2004}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 1.0, "year": 2004}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2004}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2004}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2004}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2004}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2004}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 3.0, "year": 2004}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2004}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 17.0, "year": 2004}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2004}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 2.0, "year": 2004}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 3.0, "year": 2004}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2004}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2004}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2004}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 3.0, "year": 2004}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 1.0, "year": 2004}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2004}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2004}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2004}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2004}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2004}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2004}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2004}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 3.0, "year": 2004}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2004}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 5.0, "year": 2004}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2004}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2004}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 2.0, "year": 2004}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2004}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2004}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2004}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2004}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 1.0, "year": 2004}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 26.0, "year": 2004}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 4.0, "year": 2004}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 1.0, "year": 2004}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2004}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2004}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2004}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 3.0, "year": 2004}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 4.0, "year": 2004}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2004}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 6.0, "year": 2004}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 2.0, "year": 2004}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2004}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2004}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 1.0, "year": 2004}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2004}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2004}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 3.0, "year": 2004}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2004}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 2.0, "year": 2004}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 3.0, "year": 2004}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 2.0, "year": 2004}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 3.0, "year": 2004}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2004}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 1.0, "year": 2004}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 3.0, "year": 2004}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2004}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2004}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2004}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 27.0, "year": 2004}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 3.0, "year": 2004}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 13.0, "year": 2004}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 3.0, "year": 2004}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 7.0, "year": 2004}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 2.0, "year": 2004}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 22.0, "year": 2004}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 16.0, "year": 2004}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 10.0, "year": 2004}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 15.0, "year": 2004}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2004}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 16.0, "year": 2004}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2004}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 2.0, "year": 2004}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 13.0, "year": 2004}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 6.0, "year": 2004}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 7.0, "year": 2004}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 17.0, "year": 2004}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2004}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 1.0, "year": 2004}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 4.0, "year": 2004}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 6.0, "year": 2004}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 55.0, "year": 2004}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2004}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 11.0, "year": 2004}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 3.0, "year": 2004}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 48.0, "year": 2004}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 5.0, "year": 2004}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 5.0, "year": 2004}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 3.0, "year": 2004}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 25.0, "year": 2004}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 1.0, "year": 2004}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 7.0, "year": 2004}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 10.0, "year": 2004}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2004}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2004}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 17.0, "year": 2004}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 1.0, "year": 2004}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 5.0, "year": 2004}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2004}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 6.0, "year": 2004}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 4.0, "year": 2004}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2004}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2004}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 5.0, "year": 2004}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2004}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2004}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2004}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2004}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2004}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2004}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2004}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2004}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2004}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2004}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2004}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2004}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 5.0, "year": 2004}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 4.0, "year": 2004}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2004}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2004}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2004}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2004}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2004}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2004}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 8.0, "year": 2004}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2004}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2004}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 3.0, "year": 2004}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2004}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 3.0, "year": 2004}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 2.0, "year": 2004}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2004}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 5.0, "year": 2004}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2004}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2004}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 2.0, "year": 2004}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 1.0, "year": 2004}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 2.0, "year": 2004}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2004}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2004}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2004}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2004}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 1.0, "year": 2004}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2004}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2004}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2004}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2004}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2004}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 6.0, "year": 2004}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2004}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2004}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2004}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 3.0, "year": 2004}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2004}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2004}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2004}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2004}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 5.0, "year": 2004}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2004}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2004}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2004}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2004}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 2.0, "year": 2004}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2004}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2004}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2004}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 11.0, "year": 2004}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 1.0, "year": 2004}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2004}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2004}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2004}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2004}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 4.0, "year": 2004}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2004}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2004}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 2.0, "year": 2004}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2004}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2004}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 3.0, "year": 2004}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2004}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2004}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2004}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2004}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2004}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2004}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2004}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2004}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 2.0, "year": 2004}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 24.0, "year": 2004}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 7.0, "year": 2004}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 1.0, "year": 2004}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2004}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2004}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2004}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2004}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 3.0, "year": 2004}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 5.0, "year": 2004}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 1.0, "year": 2004}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2004}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2004}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2004}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 1.0, "year": 2004}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2004}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 1.0, "year": 2004}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2004}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2004}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2004}]}, {"2005": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2005}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2005}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 18.0, "year": 2005}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2005}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 1.0, "year": 2005}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 5.0, "year": 2005}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 20.0, "year": 2005}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2005}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 9.0, "year": 2005}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2005}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 2.0, "year": 2005}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 1.0, "year": 2005}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 12.0, "year": 2005}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2005}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 1.0, "year": 2005}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2005}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2005}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2005}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 3.0, "year": 2005}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 3.0, "year": 2005}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 1.0, "year": 2005}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2005}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2005}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2005}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2005}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 1.0, "year": 2005}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2005}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 4.0, "year": 2005}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2005}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 20.0, "year": 2005}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 3.0, "year": 2005}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2005}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2005}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 6.0, "year": 2005}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 5.0, "year": 2005}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2005}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 3.0, "year": 2005}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 1.0, "year": 2005}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 2.0, "year": 2005}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2005}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2005}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2005}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 2.0, "year": 2005}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2005}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 4.0, "year": 2005}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2005}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2005}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2005}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 2.0, "year": 2005}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2005}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 18.0, "year": 2005}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2005}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 16.0, "year": 2005}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 2.0, "year": 2005}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 1.0, "year": 2005}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2005}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2005}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 2.0, "year": 2005}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2005}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2005}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2005}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2005}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2005}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 3.0, "year": 2005}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 10.0, "year": 2005}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2005}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2005}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2005}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2005}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 2.0, "year": 2005}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 1.0, "year": 2005}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2005}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2005}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 2.0, "year": 2005}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 3.0, "year": 2005}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 19.0, "year": 2005}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 6.0, "year": 2005}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 3.0, "year": 2005}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 3.0, "year": 2005}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2005}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 4.0, "year": 2005}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2005}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2005}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 3.0, "year": 2005}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 3.0, "year": 2005}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2005}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 11.0, "year": 2005}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2005}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 2.0, "year": 2005}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2005}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2005}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2005}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2005}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2005}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 1.0, "year": 2005}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2005}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 10.0, "year": 2005}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 3.0, "year": 2005}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2005}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 10.0, "year": 2005}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2005}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 1.0, "year": 2005}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2005}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2005}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 1.0, "year": 2005}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2005}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 1.0, "year": 2005}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 2.0, "year": 2005}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2005}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 2.0, "year": 2005}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2005}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 3.0, "year": 2005}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2005}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2005}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2005}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2005}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2005}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2005}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2005}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2005}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2005}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2005}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2005}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2005}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2005}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2005}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2005}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 10.0, "year": 2005}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2005}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2005}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2005}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2005}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2005}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2005}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2005}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 5.0, "year": 2005}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2005}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 22.0, "year": 2005}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2005}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 1.0, "year": 2005}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 2.0, "year": 2005}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 4.0, "year": 2005}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2005}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2005}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2005}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 5.0, "year": 2005}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 1.0, "year": 2005}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2005}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2005}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2005}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2005}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2005}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2005}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2005}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 7.0, "year": 2005}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2005}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2005}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 6.0, "year": 2005}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2005}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2005}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2005}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 2.0, "year": 2005}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2005}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2005}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2005}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2005}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 1.0, "year": 2005}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2005}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 38.0, "year": 2005}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 5.0, "year": 2005}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 2.0, "year": 2005}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2005}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2005}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2005}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 3.0, "year": 2005}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 4.0, "year": 2005}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2005}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 8.0, "year": 2005}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 3.0, "year": 2005}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2005}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2005}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 1.0, "year": 2005}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 2.0, "year": 2005}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 1.0, "year": 2005}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2005}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2005}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2005}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 3.0, "year": 2005}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2005}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 4.0, "year": 2005}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2005}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 4.0, "year": 2005}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 2.0, "year": 2005}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 3.0, "year": 2005}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2005}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 4.0, "year": 2005}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2005}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2005}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2005}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 42.0, "year": 2005}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 4.0, "year": 2005}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 20.0, "year": 2005}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 3.0, "year": 2005}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 7.0, "year": 2005}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 5.0, "year": 2005}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 26.0, "year": 2005}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 18.0, "year": 2005}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 12.0, "year": 2005}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 21.0, "year": 2005}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2005}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 20.0, "year": 2005}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2005}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 3.0, "year": 2005}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 15.0, "year": 2005}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 8.0, "year": 2005}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 7.0, "year": 2005}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 26.0, "year": 2005}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2005}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 4.0, "year": 2005}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 4.0, "year": 2005}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 2.0, "year": 2005}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 6.0, "year": 2005}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 68.0, "year": 2005}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2005}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 11.0, "year": 2005}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 5.0, "year": 2005}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 64.0, "year": 2005}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 5.0, "year": 2005}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 5.0, "year": 2005}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 3.0, "year": 2005}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 31.0, "year": 2005}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 3.0, "year": 2005}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2005}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 7.0, "year": 2005}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 14.0, "year": 2005}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 1.0, "year": 2005}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 4.0, "year": 2005}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 24.0, "year": 2005}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 1.0, "year": 2005}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 3.0, "year": 2005}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 5.0, "year": 2005}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2005}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 8.0, "year": 2005}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 3.0, "year": 2005}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 5.0, "year": 2005}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 7.0, "year": 2005}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 3.0, "year": 2005}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2005}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2005}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 4.0, "year": 2005}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 3.0, "year": 2005}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 2.0, "year": 2005}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 5.0, "year": 2005}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2005}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2005}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 1.0, "year": 2005}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2005}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2005}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2005}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2005}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2005}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2005}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2005}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2005}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2005}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2005}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2005}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2005}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2005}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2005}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2005}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2005}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2005}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2005}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2005}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2005}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 10.0, "year": 2005}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2005}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2005}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 4.0, "year": 2005}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 12.0, "year": 2005}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 3.0, "year": 2005}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 2.0, "year": 2005}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 14.0, "year": 2005}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 5.0, "year": 2005}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2005}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2005}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 2.0, "year": 2005}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 1.0, "year": 2005}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 2.0, "year": 2005}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2005}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2005}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 3.0, "year": 2005}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2005}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 1.0, "year": 2005}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2005}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2005}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2005}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2005}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 8.0, "year": 2005}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2005}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2005}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2005}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2005}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 3.0, "year": 2005}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2005}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2005}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2005}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2005}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2005}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 5.0, "year": 2005}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2005}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2005}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 1.0, "year": 2005}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2005}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2005}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 2.0, "year": 2005}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2005}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2005}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2005}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2005}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 12.0, "year": 2005}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 2.0, "year": 2005}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2005}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2005}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2005}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2005}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 4.0, "year": 2005}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2005}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2005}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2005}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 2.0, "year": 2005}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2005}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2005}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 3.0, "year": 2005}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 1.0, "year": 2005}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2005}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2005}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2005}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2005}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 3.0, "year": 2005}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2005}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2005}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2005}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 2.0, "year": 2005}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 34.0, "year": 2005}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 7.0, "year": 2005}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2005}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2005}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2005}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2005}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 3.0, "year": 2005}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 6.0, "year": 2005}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2005}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 2.0, "year": 2005}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2005}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 1.0, "year": 2005}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2005}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 1.0, "year": 2005}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 1.0, "year": 2005}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2005}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2005}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2005}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 1.0, "year": 2005}]}, {"2006": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2006}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2006}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 19.0, "year": 2006}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2006}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 1.0, "year": 2006}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2006}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 21.0, "year": 2006}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2006}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2006}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2006}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 3.0, "year": 2006}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 2.0, "year": 2006}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 16.0, "year": 2006}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2006}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 2.0, "year": 2006}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 2.0, "year": 2006}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2006}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2006}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2006}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 4.0, "year": 2006}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 4.0, "year": 2006}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2006}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2006}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2006}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 2.0, "year": 2006}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 3.0, "year": 2006}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2006}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2006}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2006}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 5.0, "year": 2006}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2006}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 30.0, "year": 2006}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 6.0, "year": 2006}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2006}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2006}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 6.0, "year": 2006}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 7.0, "year": 2006}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2006}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 3.0, "year": 2006}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 2.0, "year": 2006}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2006}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2006}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2006}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2006}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 3.0, "year": 2006}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2006}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 5.0, "year": 2006}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 3.0, "year": 2006}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2006}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2006}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2006}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 1.0, "year": 2006}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2006}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 4.0, "year": 2006}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2006}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 28.0, "year": 2006}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2006}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2006}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 21.0, "year": 2006}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 4.0, "year": 2006}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 5.0, "year": 2006}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2006}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 4.0, "year": 2006}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 2.0, "year": 2006}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2006}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2006}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2006}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2006}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 1.0, "year": 2006}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2006}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 6.0, "year": 2006}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2006}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2006}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2006}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2006}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2006}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 13.0, "year": 2006}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2006}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2006}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2006}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2006}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2006}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2006}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2006}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2006}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2006}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 1.0, "year": 2006}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 3.0, "year": 2006}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 1.0, "year": 2006}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2006}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 3.0, "year": 2006}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 4.0, "year": 2006}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 22.0, "year": 2006}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 7.0, "year": 2006}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2006}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 3.0, "year": 2006}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2006}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 5.0, "year": 2006}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2006}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2006}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 6.0, "year": 2006}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 4.0, "year": 2006}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2006}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 13.0, "year": 2006}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2006}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2006}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2006}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2006}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2006}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2006}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2006}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2006}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 1.0, "year": 2006}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2006}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 3.0, "year": 2006}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 13.0, "year": 2006}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 4.0, "year": 2006}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2006}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 15.0, "year": 2006}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2006}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 3.0, "year": 2006}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2006}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2006}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 6.0, "year": 2006}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2006}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2006}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2006}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2006}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2006}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 2.0, "year": 2006}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2006}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 4.0, "year": 2006}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2006}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 3.0, "year": 2006}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 3.0, "year": 2006}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2006}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 4.0, "year": 2006}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2006}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2006}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2006}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2006}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2006}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2006}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2006}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2006}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2006}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2006}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2006}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2006}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2006}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2006}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2006}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2006}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2006}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 14.0, "year": 2006}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2006}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2006}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2006}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 2.0, "year": 2006}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2006}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2006}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2006}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 2.0, "year": 2006}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 6.0, "year": 2006}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2006}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 26.0, "year": 2006}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2006}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 2.0, "year": 2006}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 3.0, "year": 2006}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 4.0, "year": 2006}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2006}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2006}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2006}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 8.0, "year": 2006}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 1.0, "year": 2006}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2006}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2006}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2006}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2006}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2006}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2006}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2006}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 10.0, "year": 2006}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2006}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2006}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 8.0, "year": 2006}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2006}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2006}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2006}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2006}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 2.0, "year": 2006}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2006}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2006}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2006}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2006}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 1.0, "year": 2006}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2006}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 44.0, "year": 2006}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 5.0, "year": 2006}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 2.0, "year": 2006}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2006}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 2.0, "year": 2006}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2006}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2006}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 3.0, "year": 2006}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 4.0, "year": 2006}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2006}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 9.0, "year": 2006}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 3.0, "year": 2006}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2006}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2006}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 1.0, "year": 2006}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2006}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 2.0, "year": 2006}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 3.0, "year": 2006}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2006}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2006}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2006}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2006}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2006}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 3.0, "year": 2006}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2006}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 6.0, "year": 2006}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2006}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 2.0, "year": 2006}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 5.0, "year": 2006}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 2.0, "year": 2006}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 6.0, "year": 2006}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 2.0, "year": 2006}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2006}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 6.0, "year": 2006}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 3.0, "year": 2006}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2006}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2006}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 49.0, "year": 2006}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 4.0, "year": 2006}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 23.0, "year": 2006}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 6.0, "year": 2006}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 11.0, "year": 2006}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 6.0, "year": 2006}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 33.0, "year": 2006}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 22.0, "year": 2006}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 14.0, "year": 2006}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 25.0, "year": 2006}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 1.0, "year": 2006}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 26.0, "year": 2006}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2006}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 5.0, "year": 2006}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 16.0, "year": 2006}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 11.0, "year": 2006}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 8.0, "year": 2006}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 30.0, "year": 2006}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2006}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 5.0, "year": 2006}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 7.0, "year": 2006}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 3.0, "year": 2006}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 7.0, "year": 2006}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 77.0, "year": 2006}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2006}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 12.0, "year": 2006}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 7.0, "year": 2006}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 72.0, "year": 2006}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 11.0, "year": 2006}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 5.0, "year": 2006}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 3.0, "year": 2006}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 37.0, "year": 2006}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 5.0, "year": 2006}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2006}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 7.0, "year": 2006}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 16.0, "year": 2006}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 3.0, "year": 2006}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 7.0, "year": 2006}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 32.0, "year": 2006}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 1.0, "year": 2006}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 3.0, "year": 2006}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2006}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2006}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 8.0, "year": 2006}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 3.0, "year": 2006}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 5.0, "year": 2006}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2006}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 7.0, "year": 2006}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 4.0, "year": 2006}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2006}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2006}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 5.0, "year": 2006}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 4.0, "year": 2006}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 2.0, "year": 2006}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 5.0, "year": 2006}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2006}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2006}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 1.0, "year": 2006}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2006}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2006}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2006}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2006}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2006}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2006}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2006}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2006}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2006}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2006}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2006}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2006}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2006}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 2.0, "year": 2006}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 3.0, "year": 2006}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2006}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2006}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2006}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2006}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2006}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2006}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2006}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 1.0, "year": 2006}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2006}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2006}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2006}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 10.0, "year": 2006}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2006}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2006}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 4.0, "year": 2006}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2006}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 3.0, "year": 2006}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2006}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2006}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 5.0, "year": 2006}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2006}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2006}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2006}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 2.0, "year": 2006}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 1.0, "year": 2006}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 2.0, "year": 2006}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2006}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2006}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2006}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 3.0, "year": 2006}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2006}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 1.0, "year": 2006}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 2.0, "year": 2006}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2006}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2006}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2006}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2006}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 4.0, "year": 2006}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 9.0, "year": 2006}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2006}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2006}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2006}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2006}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 3.0, "year": 2006}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 2.0, "year": 2006}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 2.0, "year": 2006}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2006}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2006}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2006}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2006}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2006}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 2.0, "year": 2006}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 5.0, "year": 2006}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2006}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2006}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 2.0, "year": 2006}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 4.0, "year": 2006}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 1.0, "year": 2006}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2006}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2006}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 2.0, "year": 2006}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2006}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2006}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2006}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2006}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2006}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 13.0, "year": 2006}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2006}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2006}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2006}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2006}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2006}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2006}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 5.0, "year": 2006}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2006}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2006}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2006}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 2.0, "year": 2006}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2006}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2006}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2006}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2006}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2006}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2006}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2006}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2006}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 4.0, "year": 2006}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2006}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2006}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2006}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2006}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2006}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 2.0, "year": 2006}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 37.0, "year": 2006}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 9.0, "year": 2006}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2006}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2006}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2006}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2006}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2006}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2006}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2006}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2006}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 8.0, "year": 2006}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2006}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2006}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2006}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2006}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2006}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2006}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2006}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 1.0, "year": 2006}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2006}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2006}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2006}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2006}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2006}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 2.0, "year": 2006}]}, {"2007": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2007}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2007}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 22.0, "year": 2007}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2007}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2007}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2007}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 22.0, "year": 2007}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2007}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2007}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2007}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 3.0, "year": 2007}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 2.0, "year": 2007}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 17.0, "year": 2007}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2007}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2007}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 2.0, "year": 2007}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 2.0, "year": 2007}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2007}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2007}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2007}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 4.0, "year": 2007}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 9.0, "year": 2007}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2007}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 4.0, "year": 2007}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2007}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2007}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 2.0, "year": 2007}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 4.0, "year": 2007}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2007}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2007}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2007}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 10.0, "year": 2007}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2007}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 41.0, "year": 2007}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 7.0, "year": 2007}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2007}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2007}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 6.0, "year": 2007}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 7.0, "year": 2007}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2007}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 4.0, "year": 2007}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 2.0, "year": 2007}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2007}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2007}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2007}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2007}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 3.0, "year": 2007}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2007}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 5.0, "year": 2007}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 5.0, "year": 2007}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2007}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2007}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2007}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2007}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2007}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 13.0, "year": 2007}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2007}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 39.0, "year": 2007}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2007}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2007}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 21.0, "year": 2007}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 8.0, "year": 2007}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 2.0, "year": 2007}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2007}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 5.0, "year": 2007}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2007}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 4.0, "year": 2007}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 2.0, "year": 2007}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2007}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2007}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2007}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2007}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 1.0, "year": 2007}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2007}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 6.0, "year": 2007}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2007}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2007}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2007}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2007}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2007}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 14.0, "year": 2007}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2007}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2007}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2007}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2007}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2007}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2007}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2007}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2007}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 1.0, "year": 2007}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 6.0, "year": 2007}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 1.0, "year": 2007}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2007}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2007}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 7.0, "year": 2007}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 4.0, "year": 2007}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 26.0, "year": 2007}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 8.0, "year": 2007}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2007}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 5.0, "year": 2007}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 1.0, "year": 2007}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2007}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2007}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2007}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2007}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 7.0, "year": 2007}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 7.0, "year": 2007}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 1.0, "year": 2007}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2007}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 13.0, "year": 2007}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2007}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2007}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2007}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2007}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2007}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2007}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2007}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2007}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 3.0, "year": 2007}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2007}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 23.0, "year": 2007}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 4.0, "year": 2007}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 5.0, "year": 2007}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 22.0, "year": 2007}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2007}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 9.0, "year": 2007}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 3.0, "year": 2007}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2007}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 10.0, "year": 2007}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2007}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2007}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2007}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2007}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 2.0, "year": 2007}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2007}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 4.0, "year": 2007}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2007}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 3.0, "year": 2007}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 8.0, "year": 2007}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2007}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 10.0, "year": 2007}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2007}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2007}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2007}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2007}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2007}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2007}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2007}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2007}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2007}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2007}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2007}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2007}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2007}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2007}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2007}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2007}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2007}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2007}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2007}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 15.0, "year": 2007}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2007}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2007}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2007}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 2.0, "year": 2007}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2007}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2007}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2007}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2007}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 3.0, "year": 2007}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 6.0, "year": 2007}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 2.0, "year": 2007}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 35.0, "year": 2007}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2007}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 8.0, "year": 2007}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 3.0, "year": 2007}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 5.0, "year": 2007}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2007}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2007}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2007}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 12.0, "year": 2007}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 3.0, "year": 2007}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2007}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2007}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2007}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2007}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2007}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2007}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2007}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2007}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2007}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2007}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2007}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2007}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2007}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2007}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2007}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2007}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2007}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2007}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2007}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2007}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2007}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2007}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 1.0, "year": 2007}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2007}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 59.0, "year": 2007}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 5.0, "year": 2007}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 2.0, "year": 2007}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2007}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 2.0, "year": 2007}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2007}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2007}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 3.0, "year": 2007}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 8.0, "year": 2007}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2007}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 10.0, "year": 2007}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2007}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 3.0, "year": 2007}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2007}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2007}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 1.0, "year": 2007}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2007}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 2.0, "year": 2007}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 5.0, "year": 2007}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2007}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2007}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2007}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 2.0, "year": 2007}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2007}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2007}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 3.0, "year": 2007}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 6.0, "year": 2007}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2007}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 5.0, "year": 2007}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 2.0, "year": 2007}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 7.0, "year": 2007}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 3.0, "year": 2007}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2007}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 8.0, "year": 2007}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 4.0, "year": 2007}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2007}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 2.0, "year": 2007}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 59.0, "year": 2007}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 7.0, "year": 2007}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 24.0, "year": 2007}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 6.0, "year": 2007}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 17.0, "year": 2007}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 6.0, "year": 2007}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 37.0, "year": 2007}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 25.0, "year": 2007}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 17.0, "year": 2007}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 29.0, "year": 2007}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 2.0, "year": 2007}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 35.0, "year": 2007}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2007}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 5.0, "year": 2007}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 18.0, "year": 2007}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 12.0, "year": 2007}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 9.0, "year": 2007}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 33.0, "year": 2007}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 2.0, "year": 2007}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 6.0, "year": 2007}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 9.0, "year": 2007}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 3.0, "year": 2007}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 7.0, "year": 2007}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 85.0, "year": 2007}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2007}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 13.0, "year": 2007}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 7.0, "year": 2007}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 77.0, "year": 2007}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 11.0, "year": 2007}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 6.0, "year": 2007}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 5.0, "year": 2007}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 42.0, "year": 2007}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 6.0, "year": 2007}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2007}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 7.0, "year": 2007}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 22.0, "year": 2007}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 4.0, "year": 2007}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 7.0, "year": 2007}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 42.0, "year": 2007}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 1.0, "year": 2007}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 5.0, "year": 2007}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 1.0, "year": 2007}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2007}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2007}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 9.0, "year": 2007}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 4.0, "year": 2007}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 7.0, "year": 2007}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2007}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2007}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2007}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2007}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 6.0, "year": 2007}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 5.0, "year": 2007}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 2.0, "year": 2007}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 6.0, "year": 2007}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2007}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2007}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 3.0, "year": 2007}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2007}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2007}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2007}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2007}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2007}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2007}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2007}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2007}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2007}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2007}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2007}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2007}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2007}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 3.0, "year": 2007}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2007}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 1.0, "year": 2007}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 3.0, "year": 2007}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 6.0, "year": 2007}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2007}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2007}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2007}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2007}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2007}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2007}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2007}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 1.0, "year": 2007}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2007}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2007}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2007}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 10.0, "year": 2007}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2007}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2007}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 4.0, "year": 2007}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 14.0, "year": 2007}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 4.0, "year": 2007}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2007}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2007}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2007}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 6.0, "year": 2007}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2007}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2007}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2007}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 2.0, "year": 2007}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2007}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 1.0, "year": 2007}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 2.0, "year": 2007}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2007}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2007}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2007}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2007}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2007}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2007}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 2.0, "year": 2007}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 3.0, "year": 2007}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2007}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2007}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2007}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2007}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 4.0, "year": 2007}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 10.0, "year": 2007}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2007}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2007}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2007}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2007}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2007}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 3.0, "year": 2007}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 2.0, "year": 2007}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 3.0, "year": 2007}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2007}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2007}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2007}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 2.0, "year": 2007}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2007}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 2.0, "year": 2007}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 5.0, "year": 2007}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2007}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2007}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2007}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2007}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 2.0, "year": 2007}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 4.0, "year": 2007}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 4.0, "year": 2007}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 1.0, "year": 2007}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2007}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2007}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 2.0, "year": 2007}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2007}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2007}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2007}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2007}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2007}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 15.0, "year": 2007}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2007}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2007}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2007}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2007}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2007}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2007}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 5.0, "year": 2007}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2007}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2007}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2007}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 2.0, "year": 2007}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2007}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2007}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2007}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2007}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2007}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2007}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2007}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2007}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2007}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2007}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2007}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2007}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 2.0, "year": 2007}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 38.0, "year": 2007}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 12.0, "year": 2007}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2007}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2007}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2007}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2007}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2007}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2007}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2007}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2007}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 9.0, "year": 2007}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2007}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2007}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2007}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2007}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 2.0, "year": 2007}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2007}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2007}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 1.0, "year": 2007}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 1.0, "year": 2007}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2007}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2007}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2007}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2007}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2007}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 4.0, "year": 2007}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 1.0, "year": 2007}]}, {"2008": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2008}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2008}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 23.0, "year": 2008}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2008}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2008}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2008}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2008}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2008}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2008}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2008}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2008}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2008}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 3.0, "year": 2008}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2008}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 2.0, "year": 2008}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2008}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 21.0, "year": 2008}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2008}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2008}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 2.0, "year": 2008}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 2.0, "year": 2008}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2008}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2008}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2008}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2008}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2008}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2008}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 4.0, "year": 2008}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 12.0, "year": 2008}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2008}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 1.0, "year": 2008}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 4.0, "year": 2008}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2008}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2008}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 2.0, "year": 2008}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 5.0, "year": 2008}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2008}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2008}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 2.0, "year": 2008}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 10.0, "year": 2008}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2008}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 53.0, "year": 2008}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 9.0, "year": 2008}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2008}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2008}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 9.0, "year": 2008}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 8.0, "year": 2008}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2008}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 4.0, "year": 2008}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 2.0, "year": 2008}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 2.0, "year": 2008}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2008}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2008}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2008}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2008}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2008}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2008}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2008}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 5.0, "year": 2008}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2008}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 6.0, "year": 2008}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2008}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 5.0, "year": 2008}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2008}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2008}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2008}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 3.0, "year": 2008}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2008}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 13.0, "year": 2008}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2008}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 51.0, "year": 2008}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 1.0, "year": 2008}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2008}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 25.0, "year": 2008}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 15.0, "year": 2008}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 5.0, "year": 2008}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2008}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 10.0, "year": 2008}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2008}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 5.0, "year": 2008}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2008}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2008}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2008}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2008}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 1.0, "year": 2008}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2008}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 6.0, "year": 2008}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2008}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2008}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2008}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2008}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2008}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 14.0, "year": 2008}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2008}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2008}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2008}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2008}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2008}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2008}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2008}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2008}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2008}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 1.0, "year": 2008}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 8.0, "year": 2008}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 2.0, "year": 2008}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2008}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2008}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2008}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 11.0, "year": 2008}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 4.0, "year": 2008}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2008}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 34.0, "year": 2008}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 10.0, "year": 2008}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2008}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 6.0, "year": 2008}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 7.0, "year": 2008}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2008}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2008}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2008}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2008}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2008}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 7.0, "year": 2008}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 8.0, "year": 2008}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 1.0, "year": 2008}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2008}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2008}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2008}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2008}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2008}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2008}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2008}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2008}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2008}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2008}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2008}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2008}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2008}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2008}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 5.0, "year": 2008}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2008}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 36.0, "year": 2008}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 4.0, "year": 2008}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 8.0, "year": 2008}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 37.0, "year": 2008}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 4.0, "year": 2008}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 14.0, "year": 2008}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 2.0, "year": 2008}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 11.0, "year": 2008}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2008}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 12.0, "year": 2008}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2008}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2008}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2008}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2008}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2008}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 4.0, "year": 2008}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2008}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 6.0, "year": 2008}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 1.0, "year": 2008}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2008}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 1.0, "year": 2008}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 4.0, "year": 2008}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 8.0, "year": 2008}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2008}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2008}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 13.0, "year": 2008}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2008}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2008}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 1.0, "year": 2008}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 1.0, "year": 2008}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2008}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2008}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2008}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2008}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2008}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2008}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2008}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2008}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2008}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2008}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2008}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2008}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2008}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2008}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2008}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2008}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2008}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2008}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2008}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2008}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 17.0, "year": 2008}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2008}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2008}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2008}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2008}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 3.0, "year": 2008}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2008}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 3.0, "year": 2008}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2008}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2008}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 7.0, "year": 2008}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 5.0, "year": 2008}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 50.0, "year": 2008}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 4.0, "year": 2008}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 13.0, "year": 2008}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 6.0, "year": 2008}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 10.0, "year": 2008}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 3.0, "year": 2008}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2008}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 2.0, "year": 2008}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2008}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 14.0, "year": 2008}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2008}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2008}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2008}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2008}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2008}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2008}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2008}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2008}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2008}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2008}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2008}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2008}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2008}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2008}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2008}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2008}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2008}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2008}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2008}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2008}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2008}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2008}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2008}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 1.0, "year": 2008}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2008}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 61.0, "year": 2008}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 5.0, "year": 2008}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 2.0, "year": 2008}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2008}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 2.0, "year": 2008}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2008}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2008}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 3.0, "year": 2008}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 8.0, "year": 2008}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2008}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 10.0, "year": 2008}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2008}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2008}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2008}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2008}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 1.0, "year": 2008}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2008}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 2.0, "year": 2008}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 5.0, "year": 2008}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2008}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2008}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 2.0, "year": 2008}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2008}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2008}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 3.0, "year": 2008}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 6.0, "year": 2008}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2008}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 5.0, "year": 2008}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 2.0, "year": 2008}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 16.0, "year": 2008}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 6.0, "year": 2008}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2008}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 4.0, "year": 2008}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 16.0, "year": 2008}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 3.0, "year": 2008}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 4.0, "year": 2008}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2008}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2008}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 2.0, "year": 2008}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 65.0, "year": 2008}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 7.0, "year": 2008}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 24.0, "year": 2008}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 6.0, "year": 2008}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 22.0, "year": 2008}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 7.0, "year": 2008}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 45.0, "year": 2008}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 36.0, "year": 2008}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 17.0, "year": 2008}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 45.0, "year": 2008}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 2.0, "year": 2008}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 42.0, "year": 2008}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 2.0, "year": 2008}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 5.0, "year": 2008}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 19.0, "year": 2008}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 15.0, "year": 2008}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 11.0, "year": 2008}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 35.0, "year": 2008}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 3.0, "year": 2008}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 6.0, "year": 2008}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 10.0, "year": 2008}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2008}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 7.0, "year": 2008}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 96.0, "year": 2008}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2008}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 15.0, "year": 2008}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 7.0, "year": 2008}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 79.0, "year": 2008}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 12.0, "year": 2008}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 7.0, "year": 2008}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 5.0, "year": 2008}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 42.0, "year": 2008}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 6.0, "year": 2008}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2008}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 7.0, "year": 2008}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 24.0, "year": 2008}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 6.0, "year": 2008}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 7.0, "year": 2008}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 45.0, "year": 2008}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 2.0, "year": 2008}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 7.0, "year": 2008}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 1.0, "year": 2008}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2008}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2008}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2008}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 1.0, "year": 2008}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 9.0, "year": 2008}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 4.0, "year": 2008}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 7.0, "year": 2008}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2008}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2008}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2008}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2008}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 6.0, "year": 2008}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 2.0, "year": 2008}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 7.0, "year": 2008}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 2.0, "year": 2008}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 6.0, "year": 2008}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2008}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2008}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 3.0, "year": 2008}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2008}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2008}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2008}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2008}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2008}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2008}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2008}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2008}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2008}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2008}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2008}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2008}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 4.0, "year": 2008}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 6.0, "year": 2008}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2008}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 1.0, "year": 2008}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 3.0, "year": 2008}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 7.0, "year": 2008}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2008}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2008}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2008}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2008}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2008}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2008}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 2.0, "year": 2008}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2008}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2008}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2008}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 11.0, "year": 2008}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2008}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 5.0, "year": 2008}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2008}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 1.0, "year": 2008}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 19.0, "year": 2008}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 6.0, "year": 2008}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2008}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2008}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 6.0, "year": 2008}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2008}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2008}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2008}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 5.0, "year": 2008}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2008}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 5.0, "year": 2008}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 1.0, "year": 2008}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2008}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 2.0, "year": 2008}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2008}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2008}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2008}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 2.0, "year": 2008}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 5.0, "year": 2008}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2008}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 3.0, "year": 2008}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2008}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2008}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2008}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2008}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 4.0, "year": 2008}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2008}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2008}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 4.0, "year": 2008}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2008}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2008}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2008}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2008}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2008}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2008}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 1.0, "year": 2008}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 3.0, "year": 2008}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2008}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 3.0, "year": 2008}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2008}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2008}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2008}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2008}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2008}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2008}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2008}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2008}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 3.0, "year": 2008}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 5.0, "year": 2008}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 4.0, "year": 2008}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2008}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 2.0, "year": 2008}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2008}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2008}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2008}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2008}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2008}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 2.0, "year": 2008}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2008}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 14.0, "year": 2008}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2008}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 15.0, "year": 2008}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2008}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2008}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2008}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2008}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2008}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2008}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 5.0, "year": 2008}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2008}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2008}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2008}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 3.0, "year": 2008}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2008}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2008}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2008}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 2.0, "year": 2008}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2008}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2008}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2008}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2008}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2008}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2008}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2008}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2008}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2008}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 4.0, "year": 2008}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2008}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 40.0, "year": 2008}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 12.0, "year": 2008}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2008}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2008}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2008}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2008}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2008}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2008}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2008}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2008}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 9.0, "year": 2008}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2008}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2008}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2008}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2008}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 3.0, "year": 2008}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2008}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2008}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 1.0, "year": 2008}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 1.0, "year": 2008}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2008}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2008}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2008}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2008}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2008}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 4.0, "year": 2008}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2008}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 1.0, "year": 2008}]}, {"2009": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2009}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2009}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 23.0, "year": 2009}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2009}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2009}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 1.0, "year": 2009}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2009}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2009}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2009}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2009}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2009}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2009}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 3.0, "year": 2009}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2009}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 2.0, "year": 2009}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2009}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 25.0, "year": 2009}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2009}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2009}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2009}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 2.0, "year": 2009}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 2.0, "year": 2009}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2009}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2009}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2009}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2009}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2009}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2009}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 4.0, "year": 2009}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2009}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 1.0, "year": 2009}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 13.0, "year": 2009}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2009}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 4.0, "year": 2009}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2009}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 4.0, "year": 2009}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2009}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2009}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 2.0, "year": 2009}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 6.0, "year": 2009}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2009}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2009}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2009}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 10.0, "year": 2009}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2009}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 59.0, "year": 2009}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 12.0, "year": 2009}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2009}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2009}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 9.0, "year": 2009}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 8.0, "year": 2009}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 3.0, "year": 2009}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 4.0, "year": 2009}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 2.0, "year": 2009}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 2.0, "year": 2009}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2009}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2009}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 3.0, "year": 2009}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 3.0, "year": 2009}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2009}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2009}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2009}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2009}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 3.0, "year": 2009}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 6.0, "year": 2009}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2009}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 6.0, "year": 2009}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2009}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 7.0, "year": 2009}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2009}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2009}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2009}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 4.0, "year": 2009}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2009}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 13.0, "year": 2009}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2009}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2009}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 54.0, "year": 2009}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 2.0, "year": 2009}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2009}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 26.0, "year": 2009}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 16.0, "year": 2009}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 5.0, "year": 2009}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2009}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 10.0, "year": 2009}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2009}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2009}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 1.0, "year": 2009}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 5.0, "year": 2009}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 3.0, "year": 2009}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2009}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2009}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2009}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2009}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2009}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 7.0, "year": 2009}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2009}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2009}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2009}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2009}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2009}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 14.0, "year": 2009}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2009}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2009}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2009}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2009}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2009}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2009}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2009}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2009}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2009}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 1.0, "year": 2009}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2009}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2009}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2009}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2009}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2009}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 14.0, "year": 2009}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2009}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 5.0, "year": 2009}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2009}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2009}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 41.0, "year": 2009}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2009}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2009}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 6.0, "year": 2009}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 10.0, "year": 2009}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2009}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2009}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 3.0, "year": 2009}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2009}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2009}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 4.0, "year": 2009}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 7.0, "year": 2009}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 10.0, "year": 2009}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 2.0, "year": 2009}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2009}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2009}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2009}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2009}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2009}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2009}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2009}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2009}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2009}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2009}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2009}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2009}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2009}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2009}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2009}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2009}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2009}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2009}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 56.0, "year": 2009}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 10.0, "year": 2009}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 18.0, "year": 2009}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 50.0, "year": 2009}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2009}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 17.0, "year": 2009}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 5.0, "year": 2009}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 22.0, "year": 2009}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2009}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 7.0, "year": 2009}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2009}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 4.0, "year": 2009}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2009}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 20.0, "year": 2009}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2009}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2009}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2009}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2009}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 5.0, "year": 2009}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2009}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 9.0, "year": 2009}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 3.0, "year": 2009}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2009}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2009}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 2.0, "year": 2009}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 4.0, "year": 2009}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 3.0, "year": 2009}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 8.0, "year": 2009}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2009}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2009}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 14.0, "year": 2009}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2009}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2009}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 1.0, "year": 2009}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 1.0, "year": 2009}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2009}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2009}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2009}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2009}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2009}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2009}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2009}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2009}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2009}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2009}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2009}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2009}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2009}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2009}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2009}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2009}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2009}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 19.0, "year": 2009}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2009}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2009}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2009}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2009}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 3.0, "year": 2009}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2009}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2009}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2009}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2009}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 3.0, "year": 2009}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2009}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 14.0, "year": 2009}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 1.0, "year": 2009}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 15.0, "year": 2009}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 67.0, "year": 2009}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 8.0, "year": 2009}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 16.0, "year": 2009}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 10.0, "year": 2009}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 21.0, "year": 2009}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2009}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2009}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 8.0, "year": 2009}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2009}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2009}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2009}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2009}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 3.0, "year": 2009}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 26.0, "year": 2009}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 6.0, "year": 2009}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2009}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2009}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2009}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2009}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2009}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2009}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2009}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2009}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2009}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2009}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2009}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2009}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2009}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2009}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2009}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2009}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2009}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2009}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2009}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2009}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2009}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2009}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2009}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 2.0, "year": 2009}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 7.0, "year": 2009}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 70.0, "year": 2009}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 5.0, "year": 2009}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 3.0, "year": 2009}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2009}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 2.0, "year": 2009}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 2.0, "year": 2009}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2009}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 7.0, "year": 2009}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 9.0, "year": 2009}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2009}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 16.0, "year": 2009}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2009}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2009}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2009}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2009}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 3.0, "year": 2009}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2009}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 7.0, "year": 2009}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 6.0, "year": 2009}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2009}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 2.0, "year": 2009}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2009}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2009}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 5.0, "year": 2009}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 7.0, "year": 2009}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 8.0, "year": 2009}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 4.0, "year": 2009}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 1.0, "year": 2009}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2009}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 2.0, "year": 2009}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2009}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 21.0, "year": 2009}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2009}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 8.0, "year": 2009}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2009}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 4.0, "year": 2009}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 25.0, "year": 2009}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 4.0, "year": 2009}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2009}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2009}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 7.0, "year": 2009}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 79.0, "year": 2009}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 9.0, "year": 2009}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 26.0, "year": 2009}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 6.0, "year": 2009}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 25.0, "year": 2009}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 7.0, "year": 2009}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 50.0, "year": 2009}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 42.0, "year": 2009}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 19.0, "year": 2009}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 52.0, "year": 2009}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 3.0, "year": 2009}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 48.0, "year": 2009}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 3.0, "year": 2009}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2009}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 22.0, "year": 2009}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 20.0, "year": 2009}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 17.0, "year": 2009}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 40.0, "year": 2009}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 3.0, "year": 2009}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 7.0, "year": 2009}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 1.0, "year": 2009}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 11.0, "year": 2009}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2009}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 7.0, "year": 2009}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 100.0, "year": 2009}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 2.0, "year": 2009}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 15.0, "year": 2009}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 8.0, "year": 2009}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 85.0, "year": 2009}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 15.0, "year": 2009}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 10.0, "year": 2009}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 5.0, "year": 2009}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 46.0, "year": 2009}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 9.0, "year": 2009}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2009}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2009}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 28.0, "year": 2009}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 7.0, "year": 2009}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 7.0, "year": 2009}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 57.0, "year": 2009}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 3.0, "year": 2009}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2009}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 7.0, "year": 2009}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 1.0, "year": 2009}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 1.0, "year": 2009}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2009}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2009}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2009}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 3.0, "year": 2009}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 9.0, "year": 2009}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 4.0, "year": 2009}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2009}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2009}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 2.0, "year": 2009}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2009}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2009}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2009}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 8.0, "year": 2009}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 2.0, "year": 2009}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 9.0, "year": 2009}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 2.0, "year": 2009}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 7.0, "year": 2009}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2009}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2009}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 3.0, "year": 2009}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2009}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2009}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2009}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2009}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 1.0, "year": 2009}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2009}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2009}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 21.0, "year": 2009}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2009}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2009}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2009}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 6.0, "year": 2009}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 8.0, "year": 2009}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2009}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 1.0, "year": 2009}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 3.0, "year": 2009}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 9.0, "year": 2009}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2009}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2009}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2009}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2009}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2009}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2009}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2009}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 3.0, "year": 2009}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 1.0, "year": 2009}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2009}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2009}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 12.0, "year": 2009}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2009}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2009}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 5.0, "year": 2009}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2009}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 22.0, "year": 2009}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 6.0, "year": 2009}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2009}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2009}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 7.0, "year": 2009}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2009}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2009}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 5.0, "year": 2009}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2009}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 5.0, "year": 2009}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 2.0, "year": 2009}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2009}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 3.0, "year": 2009}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2009}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2009}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2009}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2009}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2009}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 2.0, "year": 2009}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 2.0, "year": 2009}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 5.0, "year": 2009}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 5.0, "year": 2009}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2009}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 3.0, "year": 2009}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2009}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2009}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2009}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2009}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 4.0, "year": 2009}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2009}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2009}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2009}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2009}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2009}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2009}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2009}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2009}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2009}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2009}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 1.0, "year": 2009}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 5.0, "year": 2009}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2009}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2009}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2009}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2009}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2009}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2009}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2009}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2009}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2009}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2009}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2009}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2009}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2009}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2009}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2009}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 6.0, "year": 2009}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2009}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2009}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2009}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2009}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2009}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2009}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2009}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2009}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2009}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 14.0, "year": 2009}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2009}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 16.0, "year": 2009}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2009}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2009}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2009}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2009}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2009}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2009}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 7.0, "year": 2009}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2009}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2009}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 1.0, "year": 2009}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2009}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2009}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 3.0, "year": 2009}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2009}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2009}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2009}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 3.0, "year": 2009}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2009}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2009}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2009}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2009}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2009}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2009}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2009}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2009}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2009}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2009}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2009}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2009}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 4.0, "year": 2009}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2009}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 42.0, "year": 2009}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 12.0, "year": 2009}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2009}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2009}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2009}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2009}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2009}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2009}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2009}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2009}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2009}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2009}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 9.0, "year": 2009}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2009}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 1.0, "year": 2009}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2009}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2009}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 4.0, "year": 2009}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2009}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2009}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2009}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 2.0, "year": 2009}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2009}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2009}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2009}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2009}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2009}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2009}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2009}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 5.0, "year": 2009}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2009}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2009}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 2.0, "year": 2009}]}, {"2010": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2010}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2010}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2010}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2010}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2010}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2010}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2010}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2010}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2010}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2010}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2010}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2010}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2010}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2010}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2010}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 3.0, "year": 2010}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2010}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2010}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 2.0, "year": 2010}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2010}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 28.0, "year": 2010}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2010}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2010}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2010}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 3.0, "year": 2010}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 3.0, "year": 2010}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2010}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2010}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2010}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2010}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2010}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2010}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2010}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 5.0, "year": 2010}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 1.0, "year": 2010}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 15.0, "year": 2010}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2010}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 5.0, "year": 2010}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2010}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 4.0, "year": 2010}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 2.0, "year": 2010}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2010}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 2.0, "year": 2010}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 6.0, "year": 2010}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 2.0, "year": 2010}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2010}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2010}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 10.0, "year": 2010}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2010}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 66.0, "year": 2010}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 13.0, "year": 2010}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2010}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2010}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 9.0, "year": 2010}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 8.0, "year": 2010}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 4.0, "year": 2010}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 5.0, "year": 2010}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 3.0, "year": 2010}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 2.0, "year": 2010}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2010}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2010}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 4.0, "year": 2010}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 3.0, "year": 2010}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2010}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2010}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2010}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2010}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 3.0, "year": 2010}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2010}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 7.0, "year": 2010}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2010}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 8.0, "year": 2010}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 1.0, "year": 2010}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2010}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2010}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 7.0, "year": 2010}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2010}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 1.0, "year": 2010}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 4.0, "year": 2010}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 6.0, "year": 2010}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2010}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 13.0, "year": 2010}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2010}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2010}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 60.0, "year": 2010}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 3.0, "year": 2010}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 1.0, "year": 2010}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2010}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 30.0, "year": 2010}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 17.0, "year": 2010}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 1.0, "year": 2010}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 5.0, "year": 2010}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2010}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 10.0, "year": 2010}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2010}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2010}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 1.0, "year": 2010}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 5.0, "year": 2010}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 3.0, "year": 2010}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2010}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2010}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2010}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2010}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 2.0, "year": 2010}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2010}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 10.0, "year": 2010}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2010}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2010}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2010}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2010}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2010}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 14.0, "year": 2010}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2010}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2010}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2010}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2010}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2010}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2010}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2010}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2010}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2010}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 2.0, "year": 2010}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2010}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2010}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2010}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2010}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2010}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 16.0, "year": 2010}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2010}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 8.0, "year": 2010}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2010}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2010}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 47.0, "year": 2010}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2010}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2010}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 6.0, "year": 2010}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 2.0, "year": 2010}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 11.0, "year": 2010}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2010}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2010}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 3.0, "year": 2010}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2010}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2010}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2010}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2010}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 7.0, "year": 2010}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 3.0, "year": 2010}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 12.0, "year": 2010}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 4.0, "year": 2010}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2010}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2010}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2010}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2010}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2010}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2010}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2010}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2010}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2010}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2010}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 2.0, "year": 2010}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2010}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2010}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 2.0, "year": 2010}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2010}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2010}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 3.0, "year": 2010}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 68.0, "year": 2010}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 16.0, "year": 2010}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 1.0, "year": 2010}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 22.0, "year": 2010}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 66.0, "year": 2010}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2010}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2010}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 26.0, "year": 2010}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 1.0, "year": 2010}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 7.0, "year": 2010}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 28.0, "year": 2010}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2010}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 7.0, "year": 2010}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2010}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2010}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 6.0, "year": 2010}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2010}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 6.0, "year": 2010}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 24.0, "year": 2010}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2010}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2010}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2010}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2010}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 6.0, "year": 2010}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2010}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 10.0, "year": 2010}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 3.0, "year": 2010}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2010}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2010}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 2.0, "year": 2010}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 2.0, "year": 2010}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 5.0, "year": 2010}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 3.0, "year": 2010}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 10.0, "year": 2010}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2010}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2010}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 16.0, "year": 2010}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2010}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2010}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 3.0, "year": 2010}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 1.0, "year": 2010}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2010}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 1.0, "year": 2010}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 7.0, "year": 2010}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2010}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2010}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2010}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2010}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2010}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2010}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2010}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2010}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2010}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2010}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2010}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2010}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2010}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2010}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 19.0, "year": 2010}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2010}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2010}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2010}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 6.0, "year": 2010}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 3.0, "year": 2010}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2010}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2010}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2010}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2010}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 3.0, "year": 2010}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2010}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 16.0, "year": 2010}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 2.0, "year": 2010}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 17.0, "year": 2010}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 82.0, "year": 2010}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 8.0, "year": 2010}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2010}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 23.0, "year": 2010}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2010}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 12.0, "year": 2010}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 26.0, "year": 2010}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2010}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2010}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 8.0, "year": 2010}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2010}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2010}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2010}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2010}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2010}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2010}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 5.0, "year": 2010}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 33.0, "year": 2010}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 9.0, "year": 2010}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2010}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 6.0, "year": 2010}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2010}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2010}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2010}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2010}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2010}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2010}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2010}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2010}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2010}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2010}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2010}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2010}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2010}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2010}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2010}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2010}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2010}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2010}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2010}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2010}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 2.0, "year": 2010}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 10.0, "year": 2010}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 83.0, "year": 2010}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 6.0, "year": 2010}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 3.0, "year": 2010}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2010}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 2.0, "year": 2010}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 4.0, "year": 2010}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2010}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 8.0, "year": 2010}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 10.0, "year": 2010}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2010}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 19.0, "year": 2010}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2010}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2010}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2010}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2010}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 3.0, "year": 2010}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 7.0, "year": 2010}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 6.0, "year": 2010}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2010}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 2.0, "year": 2010}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2010}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2010}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 7.0, "year": 2010}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 8.0, "year": 2010}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2010}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 5.0, "year": 2010}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 8.0, "year": 2010}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 5.0, "year": 2010}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 2.0, "year": 2010}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2010}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 3.0, "year": 2010}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2010}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 3.0, "year": 2010}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 26.0, "year": 2010}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2010}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2010}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 10.0, "year": 2010}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2010}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 5.0, "year": 2010}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 30.0, "year": 2010}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 4.0, "year": 2010}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2010}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2010}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2010}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2010}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 91.0, "year": 2010}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 10.0, "year": 2010}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 29.0, "year": 2010}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 6.0, "year": 2010}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 34.0, "year": 2010}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 7.0, "year": 2010}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 59.0, "year": 2010}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 50.0, "year": 2010}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 24.0, "year": 2010}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 64.0, "year": 2010}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 3.0, "year": 2010}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 53.0, "year": 2010}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 3.0, "year": 2010}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2010}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 26.0, "year": 2010}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 26.0, "year": 2010}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 17.0, "year": 2010}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 40.0, "year": 2010}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 3.0, "year": 2010}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 7.0, "year": 2010}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 1.0, "year": 2010}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 11.0, "year": 2010}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2010}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 7.0, "year": 2010}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 113.0, "year": 2010}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 3.0, "year": 2010}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 15.0, "year": 2010}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 8.0, "year": 2010}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 91.0, "year": 2010}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 15.0, "year": 2010}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 12.0, "year": 2010}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 10.0, "year": 2010}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 51.0, "year": 2010}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 13.0, "year": 2010}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 3.0, "year": 2010}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2010}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 35.0, "year": 2010}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 8.0, "year": 2010}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 7.0, "year": 2010}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 69.0, "year": 2010}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 3.0, "year": 2010}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2010}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 11.0, "year": 2010}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 2.0, "year": 2010}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 2.0, "year": 2010}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2010}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2010}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2010}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 3.0, "year": 2010}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 12.0, "year": 2010}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 4.0, "year": 2010}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2010}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2010}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2010}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 2.0, "year": 2010}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2010}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2010}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2010}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 9.0, "year": 2010}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2010}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 2.0, "year": 2010}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 13.0, "year": 2010}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 4.0, "year": 2010}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 1.0, "year": 2010}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 8.0, "year": 2010}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2010}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2010}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 3.0, "year": 2010}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2010}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2010}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2010}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2010}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 1.0, "year": 2010}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2010}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2010}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 1.0, "year": 2010}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2010}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2010}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 24.0, "year": 2010}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2010}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2010}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2010}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2010}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 7.0, "year": 2010}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 11.0, "year": 2010}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2010}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2010}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 5.0, "year": 2010}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 12.0, "year": 2010}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2010}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2010}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2010}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2010}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2010}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2010}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2010}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 5.0, "year": 2010}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 2.0, "year": 2010}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2010}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2010}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 12.0, "year": 2010}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2010}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2010}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 5.0, "year": 2010}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2010}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 27.0, "year": 2010}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 6.0, "year": 2010}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2010}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2010}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 8.0, "year": 2010}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 1.0, "year": 2010}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2010}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2010}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 4.0, "year": 2010}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 6.0, "year": 2010}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2010}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 6.0, "year": 2010}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 2.0, "year": 2010}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2010}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 3.0, "year": 2010}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2010}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2010}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 14.0, "year": 2010}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2010}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2010}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 2.0, "year": 2010}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2010}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 2.0, "year": 2010}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 2.0, "year": 2010}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 7.0, "year": 2010}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 6.0, "year": 2010}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2010}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 4.0, "year": 2010}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2010}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2010}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2010}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2010}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 3.0, "year": 2010}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 1.0, "year": 2010}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 8.0, "year": 2010}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2010}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2010}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2010}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2010}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2010}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2010}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2010}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2010}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2010}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2010}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 1.0, "year": 2010}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 5.0, "year": 2010}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2010}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2010}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 11.0, "year": 2010}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 1.0, "year": 2010}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2010}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2010}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2010}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2010}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2010}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2010}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2010}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2010}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2010}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2010}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2010}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 8.0, "year": 2010}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2010}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2010}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 1.0, "year": 2010}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2010}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2010}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2010}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2010}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2010}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2010}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2010}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2010}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2010}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 18.0, "year": 2010}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2010}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2010}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2010}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2010}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2010}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 7.0, "year": 2010}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2010}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2010}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 1.0, "year": 2010}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2010}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2010}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 3.0, "year": 2010}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2010}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2010}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2010}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 3.0, "year": 2010}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2010}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2010}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2010}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2010}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2010}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2010}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2010}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2010}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2010}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2010}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2010}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2010}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2010}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2010}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2010}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 45.0, "year": 2010}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 16.0, "year": 2010}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 2.0, "year": 2010}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2010}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2010}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2010}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2010}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2010}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2010}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2010}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2010}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2010}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 1.0, "year": 2010}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 11.0, "year": 2010}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2010}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2010}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2010}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 6.0, "year": 2010}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2010}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2010}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2010}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 2.0, "year": 2010}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2010}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2010}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2010}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2010}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2010}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2010}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2010}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 6.0, "year": 2010}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2010}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 1.0, "year": 2010}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2010}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 1.0, "year": 2010}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 1.0, "year": 2010}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 5.0, "year": 2010}]}, {"2011": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2011}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2011}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2011}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2011}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2011}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2011}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2011}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2011}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2011}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2011}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2011}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2011}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2011}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2011}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 4.0, "year": 2011}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2011}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2011}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 1.0, "year": 2011}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2011}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 4.0, "year": 2011}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2011}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 30.0, "year": 2011}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2011}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2011}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2011}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 4.0, "year": 2011}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 3.0, "year": 2011}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2011}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2011}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2011}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2011}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2011}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 1.0, "year": 2011}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2011}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2011}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 5.0, "year": 2011}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 1.0, "year": 2011}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 17.0, "year": 2011}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2011}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 5.0, "year": 2011}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2011}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 4.0, "year": 2011}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 3.0, "year": 2011}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 1.0, "year": 2011}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 4.0, "year": 2011}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 6.0, "year": 2011}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 3.0, "year": 2011}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2011}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2011}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 11.0, "year": 2011}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2011}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 74.0, "year": 2011}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 15.0, "year": 2011}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2011}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 1.0, "year": 2011}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 10.0, "year": 2011}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 13.0, "year": 2011}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 6.0, "year": 2011}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 7.0, "year": 2011}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 5.0, "year": 2011}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 2.0, "year": 2011}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 3.0, "year": 2011}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 4.0, "year": 2011}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 5.0, "year": 2011}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2011}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2011}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2011}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2011}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 5.0, "year": 2011}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 9.0, "year": 2011}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2011}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 10.0, "year": 2011}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 3.0, "year": 2011}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2011}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2011}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 7.0, "year": 2011}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2011}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 2.0, "year": 2011}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2011}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 6.0, "year": 2011}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 1.0, "year": 2011}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2011}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 15.0, "year": 2011}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2011}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2011}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 65.0, "year": 2011}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 3.0, "year": 2011}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 1.0, "year": 2011}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2011}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 37.0, "year": 2011}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 19.0, "year": 2011}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 1.0, "year": 2011}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 6.0, "year": 2011}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2011}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 10.0, "year": 2011}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2011}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2011}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 5.0, "year": 2011}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 3.0, "year": 2011}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2011}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2011}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2011}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2011}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2011}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 2.0, "year": 2011}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2011}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 10.0, "year": 2011}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2011}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2011}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2011}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2011}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2011}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 14.0, "year": 2011}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2011}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2011}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2011}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2011}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 1.0, "year": 2011}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2011}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2011}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2011}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2011}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2011}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2011}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2011}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2011}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2011}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2011}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 17.0, "year": 2011}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2011}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 8.0, "year": 2011}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2011}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2011}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 47.0, "year": 2011}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2011}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2011}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 6.0, "year": 2011}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 3.0, "year": 2011}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 11.0, "year": 2011}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2011}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2011}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 3.0, "year": 2011}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2011}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2011}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 1.0, "year": 2011}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2011}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2011}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 8.0, "year": 2011}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 12.0, "year": 2011}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 5.0, "year": 2011}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2011}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2011}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2011}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2011}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2011}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2011}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2011}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2011}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2011}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2011}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2011}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 4.0, "year": 2011}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2011}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2011}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2011}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2011}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 2.0, "year": 2011}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2011}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2011}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 76.0, "year": 2011}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 21.0, "year": 2011}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 2.0, "year": 2011}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 24.0, "year": 2011}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 76.0, "year": 2011}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2011}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2011}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 30.0, "year": 2011}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 1.0, "year": 2011}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 9.0, "year": 2011}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 30.0, "year": 2011}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2011}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 4.0, "year": 2011}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 8.0, "year": 2011}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2011}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 6.0, "year": 2011}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 7.0, "year": 2011}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 27.0, "year": 2011}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2011}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2011}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2011}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 3.0, "year": 2011}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 8.0, "year": 2011}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2011}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 12.0, "year": 2011}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 3.0, "year": 2011}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2011}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2011}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 3.0, "year": 2011}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2011}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 6.0, "year": 2011}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 4.0, "year": 2011}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 11.0, "year": 2011}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2011}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2011}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 17.0, "year": 2011}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2011}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2011}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 3.0, "year": 2011}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 1.0, "year": 2011}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2011}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2011}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 4.0, "year": 2011}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 12.0, "year": 2011}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2011}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2011}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2011}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2011}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2011}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2011}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2011}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 5.0, "year": 2011}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2011}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2011}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2011}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2011}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2011}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2011}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2011}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2011}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 21.0, "year": 2011}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2011}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2011}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2011}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 7.0, "year": 2011}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 5.0, "year": 2011}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2011}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2011}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2011}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2011}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2011}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 20.0, "year": 2011}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2011}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2011}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 91.0, "year": 2011}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 8.0, "year": 2011}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2011}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 26.0, "year": 2011}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2011}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 14.0, "year": 2011}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 27.0, "year": 2011}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2011}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 4.0, "year": 2011}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 10.0, "year": 2011}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2011}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2011}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2011}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2011}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 6.0, "year": 2011}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 2.0, "year": 2011}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 37.0, "year": 2011}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 11.0, "year": 2011}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2011}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 1.0, "year": 2011}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 7.0, "year": 2011}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2011}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 1.0, "year": 2011}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2011}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2011}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2011}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2011}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2011}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2011}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2011}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2011}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2011}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2011}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2011}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2011}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2011}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2011}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2011}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2011}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2011}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2011}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2011}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 2.0, "year": 2011}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 12.0, "year": 2011}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 95.0, "year": 2011}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 6.0, "year": 2011}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 3.0, "year": 2011}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2011}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2011}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 7.0, "year": 2011}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2011}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 8.0, "year": 2011}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 12.0, "year": 2011}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2011}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 19.0, "year": 2011}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2011}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2011}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2011}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2011}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 3.0, "year": 2011}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 3.0, "year": 2011}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 9.0, "year": 2011}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 7.0, "year": 2011}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2011}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2011}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2011}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2011}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 7.0, "year": 2011}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 10.0, "year": 2011}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 7.0, "year": 2011}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 8.0, "year": 2011}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 8.0, "year": 2011}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2011}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2011}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 4.0, "year": 2011}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2011}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 29.0, "year": 2011}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2011}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2011}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 12.0, "year": 2011}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2011}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 5.0, "year": 2011}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 30.0, "year": 2011}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 4.0, "year": 2011}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2011}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2011}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2011}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2011}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 96.0, "year": 2011}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 11.0, "year": 2011}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 33.0, "year": 2011}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 8.0, "year": 2011}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 41.0, "year": 2011}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 8.0, "year": 2011}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 66.0, "year": 2011}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 59.0, "year": 2011}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 27.0, "year": 2011}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 72.0, "year": 2011}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 3.0, "year": 2011}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 56.0, "year": 2011}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 3.0, "year": 2011}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2011}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 31.0, "year": 2011}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 26.0, "year": 2011}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 20.0, "year": 2011}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 44.0, "year": 2011}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 3.0, "year": 2011}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 7.0, "year": 2011}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 1.0, "year": 2011}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 13.0, "year": 2011}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2011}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 8.0, "year": 2011}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 119.0, "year": 2011}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 3.0, "year": 2011}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 16.0, "year": 2011}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 8.0, "year": 2011}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 96.0, "year": 2011}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 15.0, "year": 2011}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 13.0, "year": 2011}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 11.0, "year": 2011}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 54.0, "year": 2011}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 13.0, "year": 2011}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 5.0, "year": 2011}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2011}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 39.0, "year": 2011}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 9.0, "year": 2011}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 9.0, "year": 2011}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 76.0, "year": 2011}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 3.0, "year": 2011}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2011}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 15.0, "year": 2011}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2011}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 2.0, "year": 2011}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2011}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 1.0, "year": 2011}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2011}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 5.0, "year": 2011}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 12.0, "year": 2011}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 4.0, "year": 2011}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2011}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2011}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2011}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 2.0, "year": 2011}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2011}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2011}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2011}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 9.0, "year": 2011}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 2.0, "year": 2011}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 15.0, "year": 2011}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2011}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2011}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 1.0, "year": 2011}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 8.0, "year": 2011}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2011}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2011}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 4.0, "year": 2011}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2011}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2011}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2011}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2011}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 2.0, "year": 2011}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2011}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2011}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2011}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2011}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2011}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2011}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 26.0, "year": 2011}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2011}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2011}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2011}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 8.0, "year": 2011}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 14.0, "year": 2011}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2011}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 3.0, "year": 2011}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2011}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 5.0, "year": 2011}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 13.0, "year": 2011}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2011}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2011}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2011}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2011}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2011}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 5.0, "year": 2011}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 2.0, "year": 2011}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2011}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2011}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 13.0, "year": 2011}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2011}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2011}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 5.0, "year": 2011}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2011}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 1.0, "year": 2011}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 33.0, "year": 2011}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2011}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 6.0, "year": 2011}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2011}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2011}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 9.0, "year": 2011}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 2.0, "year": 2011}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2011}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 4.0, "year": 2011}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 6.0, "year": 2011}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2011}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 6.0, "year": 2011}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2011}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2011}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 3.0, "year": 2011}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2011}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2011}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 4.0, "year": 2011}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 15.0, "year": 2011}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2011}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 2.0, "year": 2011}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 2.0, "year": 2011}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 11.0, "year": 2011}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 8.0, "year": 2011}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2011}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 6.0, "year": 2011}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2011}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2011}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2011}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2011}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2011}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 3.0, "year": 2011}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 3.0, "year": 2011}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 10.0, "year": 2011}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2011}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2011}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2011}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2011}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2011}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2011}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2011}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2011}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2011}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2011}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 1.0, "year": 2011}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 5.0, "year": 2011}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2011}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2011}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 12.0, "year": 2011}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 3.0, "year": 2011}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2011}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2011}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2011}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2011}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2011}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2011}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2011}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2011}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2011}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2011}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2011}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2011}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2011}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2011}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2011}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2011}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2011}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2011}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2011}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2011}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2011}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2011}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 21.0, "year": 2011}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2011}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 19.0, "year": 2011}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2011}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 4.0, "year": 2011}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 3.0, "year": 2011}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2011}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2011}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2011}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2011}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2011}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2011}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2011}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2011}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 3.0, "year": 2011}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2011}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2011}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2011}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 3.0, "year": 2011}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2011}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2011}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2011}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2011}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2011}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2011}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2011}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2011}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2011}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2011}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 1.0, "year": 2011}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2011}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2011}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2011}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2011}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 45.0, "year": 2011}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 17.0, "year": 2011}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 3.0, "year": 2011}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2011}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2011}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2011}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2011}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2011}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2011}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2011}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2011}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2011}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 1.0, "year": 2011}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 11.0, "year": 2011}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2011}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 1.0, "year": 2011}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2011}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 6.0, "year": 2011}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2011}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2011}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2011}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 2.0, "year": 2011}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2011}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2011}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2011}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2011}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2011}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2011}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 1.0, "year": 2011}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2011}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 6.0, "year": 2011}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2011}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 1.0, "year": 2011}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2011}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2011}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 2.0, "year": 2011}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2011}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 6.0, "year": 2011}]}, {"2012": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2012}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2012}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2012}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2012}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2012}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2012}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2012}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2012}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2012}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2012}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2012}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2012}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2012}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2012}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 6.0, "year": 2012}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2012}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 1.0, "year": 2012}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2012}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 1.0, "year": 2012}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2012}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 4.0, "year": 2012}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2012}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 34.0, "year": 2012}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2012}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2012}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2012}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 5.0, "year": 2012}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 5.0, "year": 2012}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2012}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2012}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 3.0, "year": 2012}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2012}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2012}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2012}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 2.0, "year": 2012}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2012}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2012}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 5.0, "year": 2012}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 2.0, "year": 2012}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 23.0, "year": 2012}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2012}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 5.0, "year": 2012}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 2.0, "year": 2012}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2012}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2012}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2012}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 5.0, "year": 2012}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 3.0, "year": 2012}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 2.0, "year": 2012}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 4.0, "year": 2012}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 7.0, "year": 2012}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 3.0, "year": 2012}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2012}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2012}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 12.0, "year": 2012}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2012}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 84.0, "year": 2012}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 16.0, "year": 2012}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 2.0, "year": 2012}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 2.0, "year": 2012}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 13.0, "year": 2012}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 16.0, "year": 2012}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 7.0, "year": 2012}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 7.0, "year": 2012}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 6.0, "year": 2012}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 2.0, "year": 2012}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 4.0, "year": 2012}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 4.0, "year": 2012}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 6.0, "year": 2012}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2012}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2012}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2012}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2012}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 3.0, "year": 2012}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 5.0, "year": 2012}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 2.0, "year": 2012}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 9.0, "year": 2012}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2012}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 13.0, "year": 2012}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 3.0, "year": 2012}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 2.0, "year": 2012}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 7.0, "year": 2012}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 2.0, "year": 2012}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2012}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 3.0, "year": 2012}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 4.0, "year": 2012}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 2.0, "year": 2012}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 1.0, "year": 2012}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2012}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 8.0, "year": 2012}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 1.0, "year": 2012}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2012}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 16.0, "year": 2012}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2012}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2012}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 80.0, "year": 2012}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 3.0, "year": 2012}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 2.0, "year": 2012}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2012}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 44.0, "year": 2012}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 25.0, "year": 2012}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 2.0, "year": 2012}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 6.0, "year": 2012}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 10.0, "year": 2012}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2012}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2012}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 6.0, "year": 2012}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 3.0, "year": 2012}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2012}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2012}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2012}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2012}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2012}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 4.0, "year": 2012}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 3.0, "year": 2012}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 3.0, "year": 2012}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 3.0, "year": 2012}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2012}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 12.0, "year": 2012}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2012}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2012}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2012}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2012}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2012}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 15.0, "year": 2012}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2012}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2012}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 2.0, "year": 2012}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2012}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2012}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2012}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2012}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2012}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2012}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2012}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 10.0, "year": 2012}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2012}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2012}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2012}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2012}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 18.0, "year": 2012}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2012}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 8.0, "year": 2012}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2012}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2012}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 48.0, "year": 2012}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2012}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2012}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2012}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 4.0, "year": 2012}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 11.0, "year": 2012}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2012}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2012}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 3.0, "year": 2012}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2012}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2012}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2012}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2012}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2012}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2012}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 4.0, "year": 2012}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 12.0, "year": 2012}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 5.0, "year": 2012}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2012}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2012}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2012}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2012}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2012}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2012}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2012}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2012}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2012}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2012}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2012}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2012}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2012}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 4.0, "year": 2012}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2012}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2012}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2012}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2012}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 4.0, "year": 2012}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 4.0, "year": 2012}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2012}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2012}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 89.0, "year": 2012}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 24.0, "year": 2012}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 2.0, "year": 2012}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 24.0, "year": 2012}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 86.0, "year": 2012}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2012}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2012}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 36.0, "year": 2012}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 1.0, "year": 2012}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 12.0, "year": 2012}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 34.0, "year": 2012}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2012}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 4.0, "year": 2012}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 9.0, "year": 2012}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2012}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2012}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 6.0, "year": 2012}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 4.0, "year": 2012}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2012}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 29.0, "year": 2012}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2012}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2012}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2012}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 2.0, "year": 2012}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 7.0, "year": 2012}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2012}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 4.0, "year": 2012}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2012}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2012}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 8.0, "year": 2012}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2012}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 14.0, "year": 2012}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2012}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2012}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2012}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 3.0, "year": 2012}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2012}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2012}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 6.0, "year": 2012}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 4.0, "year": 2012}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 11.0, "year": 2012}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2012}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2012}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 19.0, "year": 2012}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2012}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2012}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 3.0, "year": 2012}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 1.0, "year": 2012}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2012}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2012}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2012}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 4.0, "year": 2012}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 12.0, "year": 2012}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2012}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2012}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2012}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2012}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2012}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2012}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2012}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2012}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 6.0, "year": 2012}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2012}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2012}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2012}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 1.0, "year": 2012}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2012}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2012}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2012}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2012}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2012}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 23.0, "year": 2012}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2012}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2012}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2012}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 7.0, "year": 2012}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 5.0, "year": 2012}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2012}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2012}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2012}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2012}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2012}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2012}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 23.0, "year": 2012}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2012}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2012}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 100.0, "year": 2012}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 8.0, "year": 2012}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2012}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 31.0, "year": 2012}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2012}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 17.0, "year": 2012}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 30.0, "year": 2012}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2012}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 4.0, "year": 2012}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 11.0, "year": 2012}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 2.0, "year": 2012}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2012}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2012}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2012}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2012}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 4.0, "year": 2012}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2012}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 4.0, "year": 2012}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 39.0, "year": 2012}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 11.0, "year": 2012}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2012}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 1.0, "year": 2012}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 7.0, "year": 2012}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2012}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 1.0, "year": 2012}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2012}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2012}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2012}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2012}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2012}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2012}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2012}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2012}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2012}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2012}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2012}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2012}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2012}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2012}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2012}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2012}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2012}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2012}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2012}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 2.0, "year": 2012}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 12.0, "year": 2012}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 100.0, "year": 2012}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 6.0, "year": 2012}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 3.0, "year": 2012}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2012}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2012}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 8.0, "year": 2012}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2012}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 8.0, "year": 2012}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 12.0, "year": 2012}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2012}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 19.0, "year": 2012}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2012}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2012}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2012}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 3.0, "year": 2012}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 4.0, "year": 2012}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 10.0, "year": 2012}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 8.0, "year": 2012}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2012}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2012}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2012}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2012}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 8.0, "year": 2012}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 10.0, "year": 2012}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 3.0, "year": 2012}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 7.0, "year": 2012}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 9.0, "year": 2012}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 8.0, "year": 2012}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2012}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2012}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 4.0, "year": 2012}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2012}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 31.0, "year": 2012}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2012}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2012}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 13.0, "year": 2012}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2012}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 5.0, "year": 2012}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2012}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 32.0, "year": 2012}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 5.0, "year": 2012}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2012}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2012}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2012}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 104.0, "year": 2012}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 13.0, "year": 2012}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 34.0, "year": 2012}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 10.0, "year": 2012}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 46.0, "year": 2012}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 9.0, "year": 2012}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 77.0, "year": 2012}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 67.0, "year": 2012}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 30.0, "year": 2012}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 81.0, "year": 2012}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 4.0, "year": 2012}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 58.0, "year": 2012}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 3.0, "year": 2012}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2012}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 34.0, "year": 2012}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 30.0, "year": 2012}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 22.0, "year": 2012}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 49.0, "year": 2012}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 3.0, "year": 2012}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 7.0, "year": 2012}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 1.0, "year": 2012}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 14.0, "year": 2012}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2012}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 12.0, "year": 2012}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 128.0, "year": 2012}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 4.0, "year": 2012}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 16.0, "year": 2012}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 9.0, "year": 2012}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 102.0, "year": 2012}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 15.0, "year": 2012}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 17.0, "year": 2012}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 14.0, "year": 2012}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 56.0, "year": 2012}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 19.0, "year": 2012}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 5.0, "year": 2012}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2012}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 41.0, "year": 2012}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 10.0, "year": 2012}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2012}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 86.0, "year": 2012}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 3.0, "year": 2012}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2012}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 15.0, "year": 2012}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2012}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 3.0, "year": 2012}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 6.0, "year": 2012}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2012}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2012}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 6.0, "year": 2012}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2012}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 5.0, "year": 2012}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2012}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2012}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2012}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 3.0, "year": 2012}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 8.0, "year": 2012}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 5.0, "year": 2012}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2012}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 11.0, "year": 2012}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2012}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 2.0, "year": 2012}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 19.0, "year": 2012}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2012}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2012}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 2.0, "year": 2012}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 10.0, "year": 2012}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2012}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 4.0, "year": 2012}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2012}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2012}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2012}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 3.0, "year": 2012}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2012}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 2.0, "year": 2012}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2012}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2012}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2012}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 1.0, "year": 2012}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2012}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2012}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 27.0, "year": 2012}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2012}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2012}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 2.0, "year": 2012}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 1.0, "year": 2012}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 1.0, "year": 2012}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2012}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 10.0, "year": 2012}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 15.0, "year": 2012}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2012}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 3.0, "year": 2012}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2012}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2012}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 15.0, "year": 2012}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2012}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2012}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2012}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2012}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2012}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2012}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 7.0, "year": 2012}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 3.0, "year": 2012}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 2.0, "year": 2012}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 2.0, "year": 2012}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 13.0, "year": 2012}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2012}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2012}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 6.0, "year": 2012}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2012}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2012}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 3.0, "year": 2012}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 35.0, "year": 2012}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2012}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 6.0, "year": 2012}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 4.0, "year": 2012}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2012}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 4.0, "year": 2012}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 3.0, "year": 2012}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 9.0, "year": 2012}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2012}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 2.0, "year": 2012}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2012}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2012}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 4.0, "year": 2012}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 6.0, "year": 2012}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2012}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2012}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2012}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 3.0, "year": 2012}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2012}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2012}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 5.0, "year": 2012}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 16.0, "year": 2012}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2012}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2012}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 2.0, "year": 2012}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2012}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2012}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 4.0, "year": 2012}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 11.0, "year": 2012}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 9.0, "year": 2012}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 7.0, "year": 2012}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2012}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2012}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2012}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2012}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 4.0, "year": 2012}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 3.0, "year": 2012}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2012}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 11.0, "year": 2012}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2012}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2012}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2012}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2012}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2012}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2012}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2012}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2012}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2012}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2012}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 1.0, "year": 2012}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 5.0, "year": 2012}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2012}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 3.0, "year": 2012}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2012}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 13.0, "year": 2012}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 3.0, "year": 2012}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2012}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2012}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2012}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2012}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2012}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2012}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2012}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2012}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2012}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2012}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2012}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2012}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2012}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2012}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2012}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2012}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2012}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2012}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2012}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2012}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2012}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2012}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2012}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2012}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 20.0, "year": 2012}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2012}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2012}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2012}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2012}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2012}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2012}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2012}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2012}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 1.0, "year": 2012}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2012}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 4.0, "year": 2012}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2012}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 1.0, "year": 2012}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2012}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2012}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2012}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2012}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 3.0, "year": 2012}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2012}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2012}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2012}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2012}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 5.0, "year": 2012}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2012}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2012}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2012}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2012}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2012}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2012}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2012}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2012}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2012}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2012}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2012}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2012}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2012}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 46.0, "year": 2012}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 17.0, "year": 2012}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 3.0, "year": 2012}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2012}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2012}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2012}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2012}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2012}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2012}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2012}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2012}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2012}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2012}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 3.0, "year": 2012}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 11.0, "year": 2012}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2012}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2012}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2012}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 6.0, "year": 2012}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2012}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2012}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 2.0, "year": 2012}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2012}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2012}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2012}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2012}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2012}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2012}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2012}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 1.0, "year": 2012}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2012}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 7.0, "year": 2012}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2012}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 1.0, "year": 2012}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2012}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2012}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 2.0, "year": 2012}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2012}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 6.0, "year": 2012}]}, {"2013": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2013}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2013}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2013}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2013}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2013}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2013}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2013}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2013}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2013}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2013}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2013}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2013}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2013}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2013}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 6.0, "year": 2013}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2013}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 1.0, "year": 2013}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2013}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 2.0, "year": 2013}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2013}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 4.0, "year": 2013}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2013}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 39.0, "year": 2013}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2013}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2013}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 6.0, "year": 2013}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 7.0, "year": 2013}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 5.0, "year": 2013}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2013}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2013}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2013}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 3.0, "year": 2013}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2013}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2013}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2013}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 3.0, "year": 2013}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2013}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 6.0, "year": 2013}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 2.0, "year": 2013}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 28.0, "year": 2013}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2013}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 6.0, "year": 2013}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2013}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 3.0, "year": 2013}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2013}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2013}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 5.0, "year": 2013}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 4.0, "year": 2013}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 2.0, "year": 2013}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 4.0, "year": 2013}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 8.0, "year": 2013}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 3.0, "year": 2013}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2013}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2013}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 13.0, "year": 2013}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2013}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2013}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 94.0, "year": 2013}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 16.0, "year": 2013}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 3.0, "year": 2013}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 2.0, "year": 2013}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 16.0, "year": 2013}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 19.0, "year": 2013}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 8.0, "year": 2013}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 7.0, "year": 2013}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 6.0, "year": 2013}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 4.0, "year": 2013}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 5.0, "year": 2013}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 5.0, "year": 2013}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 6.0, "year": 2013}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2013}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2013}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2013}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2013}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 4.0, "year": 2013}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 7.0, "year": 2013}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 4.0, "year": 2013}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 9.0, "year": 2013}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2013}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 17.0, "year": 2013}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 3.0, "year": 2013}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 4.0, "year": 2013}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 8.0, "year": 2013}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2013}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2013}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2013}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2013}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 2.0, "year": 2013}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 1.0, "year": 2013}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2013}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 10.0, "year": 2013}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 1.0, "year": 2013}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 1.0, "year": 2013}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 20.0, "year": 2013}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2013}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2013}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 101.0, "year": 2013}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 5.0, "year": 2013}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 3.0, "year": 2013}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2013}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 56.0, "year": 2013}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 27.0, "year": 2013}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 3.0, "year": 2013}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 9.0, "year": 2013}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2013}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 11.0, "year": 2013}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2013}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 2.0, "year": 2013}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 9.0, "year": 2013}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 2.0, "year": 2013}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 2.0, "year": 2013}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2013}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 1.0, "year": 2013}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2013}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2013}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2013}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2013}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2013}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 5.0, "year": 2013}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 3.0, "year": 2013}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 6.0, "year": 2013}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 4.0, "year": 2013}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 3.0, "year": 2013}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2013}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2013}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 19.0, "year": 2013}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2013}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2013}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2013}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2013}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2013}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 17.0, "year": 2013}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2013}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2013}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 4.0, "year": 2013}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2013}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2013}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2013}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2013}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 3.0, "year": 2013}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2013}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2013}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2013}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2013}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2013}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2013}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2013}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 18.0, "year": 2013}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2013}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 8.0, "year": 2013}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2013}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2013}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 50.0, "year": 2013}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2013}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2013}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2013}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 4.0, "year": 2013}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 11.0, "year": 2013}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2013}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2013}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 3.0, "year": 2013}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2013}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2013}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2013}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2013}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2013}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2013}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 4.0, "year": 2013}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 14.0, "year": 2013}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 5.0, "year": 2013}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2013}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2013}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2013}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2013}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2013}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2013}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2013}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2013}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2013}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2013}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2013}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2013}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2013}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 4.0, "year": 2013}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2013}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2013}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2013}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2013}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 6.0, "year": 2013}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2013}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2013}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2013}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2013}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2013}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2013}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 92.0, "year": 2013}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 26.0, "year": 2013}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2013}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 24.0, "year": 2013}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 92.0, "year": 2013}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2013}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2013}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 39.0, "year": 2013}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 13.0, "year": 2013}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 35.0, "year": 2013}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2013}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2013}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 9.0, "year": 2013}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 2.0, "year": 2013}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2013}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2013}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 6.0, "year": 2013}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2013}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 5.0, "year": 2013}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2013}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 30.0, "year": 2013}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2013}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2013}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2013}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2013}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 9.0, "year": 2013}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2013}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 6.0, "year": 2013}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2013}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 3.0, "year": 2013}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2013}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 8.0, "year": 2013}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2013}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 14.0, "year": 2013}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2013}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2013}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2013}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 3.0, "year": 2013}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2013}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2013}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 6.0, "year": 2013}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 4.0, "year": 2013}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 11.0, "year": 2013}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2013}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2013}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 21.0, "year": 2013}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2013}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2013}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 4.0, "year": 2013}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 2.0, "year": 2013}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2013}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2013}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2013}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2013}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2013}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 4.0, "year": 2013}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 13.0, "year": 2013}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2013}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2013}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2013}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2013}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2013}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2013}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2013}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2013}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 6.0, "year": 2013}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2013}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2013}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 1.0, "year": 2013}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2013}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2013}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2013}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2013}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2013}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 23.0, "year": 2013}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2013}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2013}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2013}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 7.0, "year": 2013}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 5.0, "year": 2013}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 1.0, "year": 2013}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2013}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 2.0, "year": 2013}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2013}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2013}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2013}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2013}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 24.0, "year": 2013}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 4.0, "year": 2013}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2013}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 105.0, "year": 2013}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 10.0, "year": 2013}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2013}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 32.0, "year": 2013}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2013}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 18.0, "year": 2013}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 31.0, "year": 2013}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2013}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 5.0, "year": 2013}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 11.0, "year": 2013}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 2.0, "year": 2013}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2013}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 2.0, "year": 2013}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2013}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2013}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2013}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2013}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 5.0, "year": 2013}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2013}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 6.0, "year": 2013}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 41.0, "year": 2013}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 11.0, "year": 2013}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2013}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 1.0, "year": 2013}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 7.0, "year": 2013}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2013}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 1.0, "year": 2013}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2013}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2013}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2013}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2013}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 12.0, "year": 2013}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2013}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2013}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 10.0, "year": 2013}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2013}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2013}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2013}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2013}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2013}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2013}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2013}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2013}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2013}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2013}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2013}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2013}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 12.0, "year": 2013}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 114.0, "year": 2013}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 6.0, "year": 2013}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 3.0, "year": 2013}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2013}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2013}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 9.0, "year": 2013}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2013}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 12.0, "year": 2013}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 13.0, "year": 2013}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2013}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 20.0, "year": 2013}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2013}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 4.0, "year": 2013}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2013}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2013}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 3.0, "year": 2013}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 4.0, "year": 2013}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 10.0, "year": 2013}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 14.0, "year": 2013}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 1.0, "year": 2013}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2013}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2013}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2013}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2013}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2013}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 8.0, "year": 2013}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 4.0, "year": 2013}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 11.0, "year": 2013}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 4.0, "year": 2013}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 7.0, "year": 2013}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 9.0, "year": 2013}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 1.0, "year": 2013}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 9.0, "year": 2013}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2013}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2013}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2013}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2013}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 31.0, "year": 2013}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2013}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2013}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 13.0, "year": 2013}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 5.0, "year": 2013}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2013}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 32.0, "year": 2013}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 5.0, "year": 2013}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2013}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2013}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2013}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2013}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 110.0, "year": 2013}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 14.0, "year": 2013}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 36.0, "year": 2013}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 11.0, "year": 2013}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 48.0, "year": 2013}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 9.0, "year": 2013}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 94.0, "year": 2013}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 71.0, "year": 2013}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 31.0, "year": 2013}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 86.0, "year": 2013}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 5.0, "year": 2013}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 61.0, "year": 2013}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 5.0, "year": 2013}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2013}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 35.0, "year": 2013}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 33.0, "year": 2013}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 26.0, "year": 2013}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 58.0, "year": 2013}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 6.0, "year": 2013}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 9.0, "year": 2013}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 1.0, "year": 2013}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 15.0, "year": 2013}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2013}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 15.0, "year": 2013}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 134.0, "year": 2013}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 5.0, "year": 2013}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 17.0, "year": 2013}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 10.0, "year": 2013}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 107.0, "year": 2013}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 16.0, "year": 2013}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 18.0, "year": 2013}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 17.0, "year": 2013}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 62.0, "year": 2013}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 21.0, "year": 2013}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 7.0, "year": 2013}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2013}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 41.0, "year": 2013}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 12.0, "year": 2013}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2013}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 96.0, "year": 2013}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 3.0, "year": 2013}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2013}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 16.0, "year": 2013}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2013}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 3.0, "year": 2013}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 7.0, "year": 2013}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2013}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2013}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 6.0, "year": 2013}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2013}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 5.0, "year": 2013}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2013}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2013}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2013}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 4.0, "year": 2013}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 9.0, "year": 2013}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2013}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 3.0, "year": 2013}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 11.0, "year": 2013}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2013}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2013}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 22.0, "year": 2013}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2013}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2013}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 3.0, "year": 2013}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 11.0, "year": 2013}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2013}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2013}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 4.0, "year": 2013}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2013}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2013}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2013}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2013}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 3.0, "year": 2013}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2013}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 2.0, "year": 2013}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 1.0, "year": 2013}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2013}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2013}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2013}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 2.0, "year": 2013}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2013}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2013}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2013}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 29.0, "year": 2013}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2013}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2013}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 2.0, "year": 2013}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 1.0, "year": 2013}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2013}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2013}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2013}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 10.0, "year": 2013}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 15.0, "year": 2013}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2013}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2013}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2013}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2013}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 15.0, "year": 2013}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2013}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2013}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2013}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2013}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2013}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2013}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 9.0, "year": 2013}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 4.0, "year": 2013}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 5.0, "year": 2013}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 1.0, "year": 2013}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 4.0, "year": 2013}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 13.0, "year": 2013}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 2.0, "year": 2013}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 10.0, "year": 2013}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2013}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 3.0, "year": 2013}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2013}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 3.0, "year": 2013}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 38.0, "year": 2013}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2013}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 7.0, "year": 2013}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 5.0, "year": 2013}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2013}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 1.0, "year": 2013}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 5.0, "year": 2013}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 4.0, "year": 2013}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 12.0, "year": 2013}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2013}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 2.0, "year": 2013}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2013}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2013}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 6.0, "year": 2013}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 6.0, "year": 2013}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2013}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2013}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2013}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2013}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 3.0, "year": 2013}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 1.0, "year": 2013}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2013}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 5.0, "year": 2013}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 16.0, "year": 2013}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2013}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2013}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2013}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2013}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 5.0, "year": 2013}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 13.0, "year": 2013}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 9.0, "year": 2013}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2013}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 7.0, "year": 2013}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2013}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2013}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2013}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2013}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2013}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 4.0, "year": 2013}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 3.0, "year": 2013}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2013}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 12.0, "year": 2013}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2013}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2013}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2013}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2013}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 12.0, "year": 2013}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2013}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2013}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2013}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 2.0, "year": 2013}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2013}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2013}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 5.0, "year": 2013}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2013}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 3.0, "year": 2013}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2013}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 13.0, "year": 2013}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 3.0, "year": 2013}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2013}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2013}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2013}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2013}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2013}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2013}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2013}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2013}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2013}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2013}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2013}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2013}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2013}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2013}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2013}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2013}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2013}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2013}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2013}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2013}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2013}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2013}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2013}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2013}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 1.0, "year": 2013}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2013}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 24.0, "year": 2013}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2013}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 22.0, "year": 2013}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2013}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2013}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2013}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2013}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2013}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2013}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2013}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2013}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 1.0, "year": 2013}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2013}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 5.0, "year": 2013}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 1.0, "year": 2013}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2013}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2013}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2013}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2013}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2013}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2013}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 3.0, "year": 2013}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 4.0, "year": 2013}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2013}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2013}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2013}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2013}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 6.0, "year": 2013}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2013}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 1.0, "year": 2013}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2013}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2013}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 3.0, "year": 2013}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2013}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2013}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2013}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2013}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2013}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2013}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2013}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2013}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2013}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2013}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2013}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 48.0, "year": 2013}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 18.0, "year": 2013}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 5.0, "year": 2013}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2013}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2013}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2013}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2013}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2013}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2013}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 1.0, "year": 2013}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2013}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2013}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2013}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 4.0, "year": 2013}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 13.0, "year": 2013}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2013}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2013}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2013}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 6.0, "year": 2013}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2013}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2013}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2013}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2013}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 2.0, "year": 2013}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2013}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 1.0, "year": 2013}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2013}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2013}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2013}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2013}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2013}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 1.0, "year": 2013}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2013}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 7.0, "year": 2013}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2013}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 1.0, "year": 2013}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2013}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2013}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2013}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2013}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 6.0, "year": 2013}]}, {"2014": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2014}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2014}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2014}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2014}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2014}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2014}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2014}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2014}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2014}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2014}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2014}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2014}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2014}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2014}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 7.0, "year": 2014}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2014}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2014}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 1.0, "year": 2014}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2014}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 3.0, "year": 2014}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2014}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 1.0, "year": 2014}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 4.0, "year": 2014}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2014}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 44.0, "year": 2014}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2014}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2014}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 6.0, "year": 2014}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 7.0, "year": 2014}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 5.0, "year": 2014}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2014}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2014}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2014}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 3.0, "year": 2014}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2014}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2014}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 3.0, "year": 2014}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2014}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 6.0, "year": 2014}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 2.0, "year": 2014}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 32.0, "year": 2014}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2014}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 7.0, "year": 2014}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2014}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 3.0, "year": 2014}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2014}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2014}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 6.0, "year": 2014}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 4.0, "year": 2014}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 2.0, "year": 2014}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 4.0, "year": 2014}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 9.0, "year": 2014}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 3.0, "year": 2014}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 2.0, "year": 2014}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2014}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 14.0, "year": 2014}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2014}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2014}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 105.0, "year": 2014}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 16.0, "year": 2014}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2014}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 2.0, "year": 2014}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 21.0, "year": 2014}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 20.0, "year": 2014}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 8.0, "year": 2014}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 7.0, "year": 2014}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 6.0, "year": 2014}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 4.0, "year": 2014}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 6.0, "year": 2014}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 5.0, "year": 2014}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 7.0, "year": 2014}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2014}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2014}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2014}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2014}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2014}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 9.0, "year": 2014}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 4.0, "year": 2014}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 9.0, "year": 2014}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2014}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 17.0, "year": 2014}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 3.0, "year": 2014}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2014}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 9.0, "year": 2014}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2014}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 3.0, "year": 2014}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2014}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2014}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 3.0, "year": 2014}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2014}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2014}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 11.0, "year": 2014}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 1.0, "year": 2014}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 2.0, "year": 2014}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 21.0, "year": 2014}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2014}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2014}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 116.0, "year": 2014}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 5.0, "year": 2014}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 4.0, "year": 2014}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2014}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 1.0, "year": 2014}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 66.0, "year": 2014}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 30.0, "year": 2014}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 3.0, "year": 2014}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 10.0, "year": 2014}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2014}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 11.0, "year": 2014}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2014}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 3.0, "year": 2014}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 3.0, "year": 2014}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 3.0, "year": 2014}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 9.0, "year": 2014}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2014}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 2.0, "year": 2014}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2014}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 2.0, "year": 2014}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 12.0, "year": 2014}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2014}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2014}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 21.0, "year": 2014}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2014}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2014}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 3.0, "year": 2014}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 9.0, "year": 2014}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 6.0, "year": 2014}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 3.0, "year": 2014}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2014}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2014}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 21.0, "year": 2014}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2014}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2014}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2014}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2014}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2014}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 18.0, "year": 2014}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2014}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2014}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 5.0, "year": 2014}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2014}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2014}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2014}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2014}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 4.0, "year": 2014}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2014}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2014}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2014}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2014}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2014}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2014}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2014}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 18.0, "year": 2014}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2014}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 8.0, "year": 2014}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2014}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2014}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 56.0, "year": 2014}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2014}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2014}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2014}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 4.0, "year": 2014}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 12.0, "year": 2014}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2014}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 5.0, "year": 2014}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 4.0, "year": 2014}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2014}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2014}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2014}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2014}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2014}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2014}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2014}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 4.0, "year": 2014}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 17.0, "year": 2014}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 6.0, "year": 2014}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2014}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2014}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2014}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2014}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2014}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2014}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2014}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2014}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2014}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2014}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2014}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 4.0, "year": 2014}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2014}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2014}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2014}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2014}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2014}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 6.0, "year": 2014}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2014}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2014}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2014}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2014}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 6.0, "year": 2014}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2014}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 1.0, "year": 2014}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 98.0, "year": 2014}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 26.0, "year": 2014}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2014}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 24.0, "year": 2014}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 98.0, "year": 2014}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 6.0, "year": 2014}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2014}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 40.0, "year": 2014}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 15.0, "year": 2014}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 40.0, "year": 2014}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2014}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2014}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 10.0, "year": 2014}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2014}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2014}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2014}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 6.0, "year": 2014}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2014}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 6.0, "year": 2014}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2014}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 32.0, "year": 2014}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 3.0, "year": 2014}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2014}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2014}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2014}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2014}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 9.0, "year": 2014}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2014}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 6.0, "year": 2014}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2014}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 3.0, "year": 2014}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2014}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2014}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 8.0, "year": 2014}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2014}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2014}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2014}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2014}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2014}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 3.0, "year": 2014}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2014}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 6.0, "year": 2014}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2014}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 4.0, "year": 2014}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 12.0, "year": 2014}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2014}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2014}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 24.0, "year": 2014}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2014}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2014}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 5.0, "year": 2014}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 2.0, "year": 2014}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2014}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2014}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2014}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2014}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 1.0, "year": 2014}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 4.0, "year": 2014}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 17.0, "year": 2014}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2014}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2014}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2014}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2014}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2014}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 5.0, "year": 2014}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2014}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2014}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 7.0, "year": 2014}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2014}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2014}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 1.0, "year": 2014}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2014}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2014}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2014}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2014}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2014}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 24.0, "year": 2014}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2014}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2014}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2014}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 7.0, "year": 2014}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 5.0, "year": 2014}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 2.0, "year": 2014}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2014}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 2.0, "year": 2014}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2014}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2014}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2014}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2014}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 24.0, "year": 2014}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 4.0, "year": 2014}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2014}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 111.0, "year": 2014}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 10.0, "year": 2014}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2014}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 33.0, "year": 2014}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2014}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 20.0, "year": 2014}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 35.0, "year": 2014}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2014}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 5.0, "year": 2014}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 12.0, "year": 2014}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2014}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2014}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2014}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2014}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 5.0, "year": 2014}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2014}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 6.0, "year": 2014}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2014}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 6.0, "year": 2014}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 45.0, "year": 2014}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 12.0, "year": 2014}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2014}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 1.0, "year": 2014}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 7.0, "year": 2014}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2014}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 1.0, "year": 2014}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2014}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2014}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2014}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2014}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 14.0, "year": 2014}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2014}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2014}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 11.0, "year": 2014}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2014}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2014}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2014}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2014}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2014}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2014}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2014}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2014}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2014}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2014}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 15.0, "year": 2014}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 126.0, "year": 2014}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 7.0, "year": 2014}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 6.0, "year": 2014}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2014}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2014}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 9.0, "year": 2014}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2014}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 13.0, "year": 2014}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 13.0, "year": 2014}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 2.0, "year": 2014}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 23.0, "year": 2014}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2014}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 5.0, "year": 2014}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2014}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2014}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 4.0, "year": 2014}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 4.0, "year": 2014}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 11.0, "year": 2014}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 17.0, "year": 2014}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2014}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2014}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2014}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2014}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2014}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2014}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 8.0, "year": 2014}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 5.0, "year": 2014}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 11.0, "year": 2014}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 4.0, "year": 2014}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 10.0, "year": 2014}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 9.0, "year": 2014}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 2.0, "year": 2014}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 9.0, "year": 2014}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2014}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2014}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2014}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2014}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2014}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2014}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 34.0, "year": 2014}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 1.0, "year": 2014}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2014}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2014}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 13.0, "year": 2014}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 5.0, "year": 2014}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2014}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 35.0, "year": 2014}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 5.0, "year": 2014}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 8.0, "year": 2014}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 4.0, "year": 2014}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2014}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2014}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2014}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2014}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 117.0, "year": 2014}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 18.0, "year": 2014}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 39.0, "year": 2014}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 11.0, "year": 2014}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 50.0, "year": 2014}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 9.0, "year": 2014}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 112.0, "year": 2014}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 77.0, "year": 2014}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 31.0, "year": 2014}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 96.0, "year": 2014}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 5.0, "year": 2014}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 62.0, "year": 2014}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 5.0, "year": 2014}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2014}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 39.0, "year": 2014}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 35.0, "year": 2014}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 30.0, "year": 2014}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 64.0, "year": 2014}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 9.0, "year": 2014}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 9.0, "year": 2014}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 2.0, "year": 2014}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 16.0, "year": 2014}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2014}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 17.0, "year": 2014}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 140.0, "year": 2014}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 6.0, "year": 2014}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 19.0, "year": 2014}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 11.0, "year": 2014}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 118.0, "year": 2014}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 16.0, "year": 2014}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 21.0, "year": 2014}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 20.0, "year": 2014}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 74.0, "year": 2014}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 24.0, "year": 2014}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 7.0, "year": 2014}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2014}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 44.0, "year": 2014}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 12.0, "year": 2014}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2014}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 102.0, "year": 2014}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 4.0, "year": 2014}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2014}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 18.0, "year": 2014}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2014}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 5.0, "year": 2014}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 8.0, "year": 2014}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2014}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 1.0, "year": 2014}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 6.0, "year": 2014}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2014}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 5.0, "year": 2014}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2014}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2014}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2014}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2014}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 4.0, "year": 2014}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 9.0, "year": 2014}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2014}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 3.0, "year": 2014}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2014}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 11.0, "year": 2014}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2014}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2014}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 24.0, "year": 2014}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2014}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2014}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 4.0, "year": 2014}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 11.0, "year": 2014}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2014}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2014}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 4.0, "year": 2014}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2014}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2014}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2014}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2014}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2014}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2014}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2014}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 3.0, "year": 2014}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2014}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 2.0, "year": 2014}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2014}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2014}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2014}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 2.0, "year": 2014}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 3.0, "year": 2014}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2014}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 32.0, "year": 2014}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2014}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 3.0, "year": 2014}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2014}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 1.0, "year": 2014}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2014}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2014}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2014}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2014}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 11.0, "year": 2014}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 16.0, "year": 2014}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2014}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2014}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 2.0, "year": 2014}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2014}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 1.0, "year": 2014}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2014}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 16.0, "year": 2014}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2014}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2014}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2014}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2014}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2014}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2014}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 10.0, "year": 2014}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 4.0, "year": 2014}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 5.0, "year": 2014}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 1.0, "year": 2014}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 4.0, "year": 2014}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 14.0, "year": 2014}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 2.0, "year": 2014}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 3.0, "year": 2014}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 10.0, "year": 2014}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2014}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 3.0, "year": 2014}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2014}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 4.0, "year": 2014}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 40.0, "year": 2014}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2014}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 9.0, "year": 2014}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 5.0, "year": 2014}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2014}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 1.0, "year": 2014}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2014}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 4.0, "year": 2014}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 16.0, "year": 2014}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2014}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 2.0, "year": 2014}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2014}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2014}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 6.0, "year": 2014}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 8.0, "year": 2014}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2014}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2014}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2014}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2014}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2014}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 4.0, "year": 2014}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 3.0, "year": 2014}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2014}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 5.0, "year": 2014}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2014}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2014}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2014}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 3.0, "year": 2014}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2014}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2014}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 6.0, "year": 2014}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 16.0, "year": 2014}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 9.0, "year": 2014}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2014}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 7.0, "year": 2014}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2014}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2014}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2014}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2014}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2014}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 4.0, "year": 2014}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 3.0, "year": 2014}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2014}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 13.0, "year": 2014}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2014}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2014}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2014}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2014}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 13.0, "year": 2014}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 1.0, "year": 2014}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2014}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2014}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2014}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2014}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2014}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2014}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 6.0, "year": 2014}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 1.0, "year": 2014}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 6.0, "year": 2014}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2014}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 14.0, "year": 2014}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2014}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 3.0, "year": 2014}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2014}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2014}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2014}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2014}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2014}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2014}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2014}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2014}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2014}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2014}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2014}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2014}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 4.0, "year": 2014}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2014}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2014}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 6.0, "year": 2014}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2014}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2014}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2014}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2014}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2014}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2014}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2014}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2014}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2014}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 1.0, "year": 2014}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2014}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 25.0, "year": 2014}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2014}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 24.0, "year": 2014}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2014}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2014}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2014}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2014}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2014}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2014}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2014}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2014}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2014}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 3.0, "year": 2014}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 2.0, "year": 2014}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2014}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 7.0, "year": 2014}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2014}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 1.0, "year": 2014}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2014}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2014}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2014}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2014}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2014}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 4.0, "year": 2014}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 4.0, "year": 2014}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2014}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2014}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2014}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 7.0, "year": 2014}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2014}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2014}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 2.0, "year": 2014}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2014}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2014}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 3.0, "year": 2014}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2014}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2014}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2014}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2014}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2014}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2014}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2014}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2014}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2014}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2014}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2014}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2014}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 50.0, "year": 2014}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 18.0, "year": 2014}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 5.0, "year": 2014}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2014}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2014}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2014}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2014}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2014}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2014}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2014}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2014}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2014}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2014}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2014}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 6.0, "year": 2014}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 13.0, "year": 2014}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2014}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2014}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2014}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2014}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 6.0, "year": 2014}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2014}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2014}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2014}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 2.0, "year": 2014}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2014}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2014}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2014}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2014}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 2.0, "year": 2014}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2014}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2014}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2014}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 2.0, "year": 2014}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2014}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 7.0, "year": 2014}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2014}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 1.0, "year": 2014}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2014}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2014}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2014}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2014}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 7.0, "year": 2014}]}, {"2015": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2015}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2015}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2015}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2015}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2015}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2015}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2015}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2015}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2015}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2015}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2015}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2015}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 3.0, "year": 2015}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 7.0, "year": 2015}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2015}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 1.0, "year": 2015}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2015}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2015}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 3.0, "year": 2015}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2015}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 4.0, "year": 2015}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2015}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 47.0, "year": 2015}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2015}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2015}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 6.0, "year": 2015}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 8.0, "year": 2015}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 5.0, "year": 2015}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 1.0, "year": 2015}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2015}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2015}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 5.0, "year": 2015}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2015}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2015}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 3.0, "year": 2015}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2015}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 7.0, "year": 2015}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2015}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 35.0, "year": 2015}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2015}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 11.0, "year": 2015}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2015}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 5.0, "year": 2015}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2015}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2015}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 6.0, "year": 2015}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 4.0, "year": 2015}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 2.0, "year": 2015}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 4.0, "year": 2015}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 12.0, "year": 2015}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 6.0, "year": 2015}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2015}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2015}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 20.0, "year": 2015}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2015}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2015}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 114.0, "year": 2015}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 17.0, "year": 2015}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2015}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 2.0, "year": 2015}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 26.0, "year": 2015}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 23.0, "year": 2015}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 10.0, "year": 2015}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 10.0, "year": 2015}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 6.0, "year": 2015}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 4.0, "year": 2015}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 6.0, "year": 2015}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 6.0, "year": 2015}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 7.0, "year": 2015}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 3.0, "year": 2015}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2015}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2015}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2015}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2015}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 9.0, "year": 2015}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 4.0, "year": 2015}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 11.0, "year": 2015}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 18.0, "year": 2015}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2015}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 4.0, "year": 2015}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2015}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2015}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2015}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 12.0, "year": 2015}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2015}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 4.0, "year": 2015}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2015}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2015}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 3.0, "year": 2015}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2015}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2015}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 12.0, "year": 2015}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 4.0, "year": 2015}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 2.0, "year": 2015}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 28.0, "year": 2015}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2015}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2015}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 128.0, "year": 2015}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 5.0, "year": 2015}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 4.0, "year": 2015}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2015}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 2.0, "year": 2015}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 73.0, "year": 2015}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 31.0, "year": 2015}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 3.0, "year": 2015}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 11.0, "year": 2015}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2015}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 11.0, "year": 2015}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2015}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 3.0, "year": 2015}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 4.0, "year": 2015}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 4.0, "year": 2015}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 9.0, "year": 2015}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2015}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 2.0, "year": 2015}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2015}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 3.0, "year": 2015}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2015}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2015}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2015}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 22.0, "year": 2015}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2015}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2015}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 9.0, "year": 2015}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 7.0, "year": 2015}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 5.0, "year": 2015}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2015}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 22.0, "year": 2015}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2015}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2015}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2015}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2015}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2015}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2015}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 19.0, "year": 2015}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2015}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2015}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2015}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 5.0, "year": 2015}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2015}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2015}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2015}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2015}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2015}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 4.0, "year": 2015}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2015}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2015}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2015}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2015}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 1.0, "year": 2015}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 1.0, "year": 2015}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2015}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 18.0, "year": 2015}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 2.0, "year": 2015}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2015}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 11.0, "year": 2015}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2015}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2015}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 62.0, "year": 2015}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2015}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2015}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2015}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 7.0, "year": 2015}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 12.0, "year": 2015}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 4.0, "year": 2015}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 6.0, "year": 2015}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 4.0, "year": 2015}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2015}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2015}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2015}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2015}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2015}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2015}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 6.0, "year": 2015}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2015}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 6.0, "year": 2015}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 17.0, "year": 2015}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 8.0, "year": 2015}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2015}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2015}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2015}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2015}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2015}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2015}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2015}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2015}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2015}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2015}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2015}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2015}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 4.0, "year": 2015}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2015}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2015}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2015}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2015}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 6.0, "year": 2015}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2015}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2015}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2015}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2015}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2015}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 7.0, "year": 2015}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2015}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 1.0, "year": 2015}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 109.0, "year": 2015}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 29.0, "year": 2015}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2015}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 28.0, "year": 2015}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 109.0, "year": 2015}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 9.0, "year": 2015}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2015}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 44.0, "year": 2015}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2015}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 19.0, "year": 2015}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 45.0, "year": 2015}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2015}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2015}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 13.0, "year": 2015}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 3.0, "year": 2015}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2015}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2015}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2015}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2015}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 11.0, "year": 2015}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 10.0, "year": 2015}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2015}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 35.0, "year": 2015}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 3.0, "year": 2015}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2015}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2015}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2015}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2015}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 10.0, "year": 2015}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2015}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 7.0, "year": 2015}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2015}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2015}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2015}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2015}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2015}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 9.0, "year": 2015}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2015}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2015}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2015}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2015}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2015}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2015}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 4.0, "year": 2015}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2015}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2015}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 7.0, "year": 2015}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2015}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 4.0, "year": 2015}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 13.0, "year": 2015}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2015}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2015}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 26.0, "year": 2015}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 1.0, "year": 2015}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2015}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 1.0, "year": 2015}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 5.0, "year": 2015}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 2.0, "year": 2015}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2015}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 3.0, "year": 2015}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2015}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2015}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2015}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 4.0, "year": 2015}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 17.0, "year": 2015}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2015}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2015}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2015}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2015}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2015}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 5.0, "year": 2015}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2015}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 1.0, "year": 2015}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 7.0, "year": 2015}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2015}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2015}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 1.0, "year": 2015}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2015}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2015}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2015}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 2.0, "year": 2015}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2015}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 24.0, "year": 2015}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2015}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2015}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2015}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 7.0, "year": 2015}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 5.0, "year": 2015}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 2.0, "year": 2015}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 5.0, "year": 2015}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 2.0, "year": 2015}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2015}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2015}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2015}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2015}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2015}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 24.0, "year": 2015}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 4.0, "year": 2015}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 20.0, "year": 2015}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 120.0, "year": 2015}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 10.0, "year": 2015}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2015}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 34.0, "year": 2015}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 3.0, "year": 2015}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 22.0, "year": 2015}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 40.0, "year": 2015}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 6.0, "year": 2015}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 5.0, "year": 2015}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 14.0, "year": 2015}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2015}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2015}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 5.0, "year": 2015}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2015}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2015}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2015}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 7.0, "year": 2015}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 7.0, "year": 2015}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2015}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2015}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 48.0, "year": 2015}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 12.0, "year": 2015}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2015}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 4.0, "year": 2015}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 10.0, "year": 2015}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2015}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 3.0, "year": 2015}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 1.0, "year": 2015}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2015}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2015}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2015}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2015}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 14.0, "year": 2015}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2015}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2015}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 12.0, "year": 2015}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 2.0, "year": 2015}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2015}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2015}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2015}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2015}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2015}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2015}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2015}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2015}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2015}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 145.0, "year": 2015}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 12.0, "year": 2015}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 7.0, "year": 2015}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2015}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2015}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 12.0, "year": 2015}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2015}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 18.0, "year": 2015}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 19.0, "year": 2015}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 5.0, "year": 2015}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 26.0, "year": 2015}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2015}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 6.0, "year": 2015}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2015}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 4.0, "year": 2015}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 7.0, "year": 2015}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 12.0, "year": 2015}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 18.0, "year": 2015}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2015}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2015}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 8.0, "year": 2015}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2015}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 17.0, "year": 2015}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 3.0, "year": 2015}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 12.0, "year": 2015}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 5.0, "year": 2015}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 12.0, "year": 2015}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 7.0, "year": 2015}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 10.0, "year": 2015}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 12.0, "year": 2015}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 2.0, "year": 2015}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 2.0, "year": 2015}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 9.0, "year": 2015}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2015}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2015}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2015}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2015}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2015}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2015}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 39.0, "year": 2015}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 4.0, "year": 2015}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2015}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2015}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 16.0, "year": 2015}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 8.0, "year": 2015}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2015}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 36.0, "year": 2015}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 5.0, "year": 2015}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2015}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 6.0, "year": 2015}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2015}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2015}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2015}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 6.0, "year": 2015}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2015}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2015}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2015}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 124.0, "year": 2015}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 19.0, "year": 2015}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 43.0, "year": 2015}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 11.0, "year": 2015}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 55.0, "year": 2015}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 9.0, "year": 2015}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 121.0, "year": 2015}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 84.0, "year": 2015}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 33.0, "year": 2015}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 104.0, "year": 2015}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 5.0, "year": 2015}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 63.0, "year": 2015}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 5.0, "year": 2015}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 7.0, "year": 2015}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 42.0, "year": 2015}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 39.0, "year": 2015}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 32.0, "year": 2015}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 69.0, "year": 2015}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 12.0, "year": 2015}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 10.0, "year": 2015}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 3.0, "year": 2015}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 17.0, "year": 2015}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 4.0, "year": 2015}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 18.0, "year": 2015}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 144.0, "year": 2015}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 6.0, "year": 2015}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 19.0, "year": 2015}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 13.0, "year": 2015}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 124.0, "year": 2015}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 16.0, "year": 2015}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 28.0, "year": 2015}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 22.0, "year": 2015}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 78.0, "year": 2015}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 29.0, "year": 2015}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 7.0, "year": 2015}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2015}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 49.0, "year": 2015}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 12.0, "year": 2015}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2015}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 107.0, "year": 2015}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 5.0, "year": 2015}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2015}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 20.0, "year": 2015}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2015}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 6.0, "year": 2015}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 9.0, "year": 2015}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2015}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2015}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 9.0, "year": 2015}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2015}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 5.0, "year": 2015}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 10.0, "year": 2015}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2015}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2015}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 5.0, "year": 2015}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 9.0, "year": 2015}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2015}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2015}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2015}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2015}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 14.0, "year": 2015}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2015}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2015}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 26.0, "year": 2015}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2015}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2015}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2015}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 4.0, "year": 2015}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 12.0, "year": 2015}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2015}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2015}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2015}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2015}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2015}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2015}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2015}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2015}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2015}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 4.0, "year": 2015}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2015}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 2.0, "year": 2015}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2015}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2015}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2015}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2015}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 2.0, "year": 2015}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 6.0, "year": 2015}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2015}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 36.0, "year": 2015}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2015}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2015}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2015}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2015}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 1.0, "year": 2015}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2015}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2015}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2015}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2015}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 15.0, "year": 2015}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 17.0, "year": 2015}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2015}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2015}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2015}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2015}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 5.0, "year": 2015}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 6.0, "year": 2015}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2015}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 17.0, "year": 2015}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2015}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 5.0, "year": 2015}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2015}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2015}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2015}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 10.0, "year": 2015}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 4.0, "year": 2015}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 5.0, "year": 2015}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 1.0, "year": 2015}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 4.0, "year": 2015}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 14.0, "year": 2015}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 3.0, "year": 2015}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 3.0, "year": 2015}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 11.0, "year": 2015}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 1.0, "year": 2015}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 3.0, "year": 2015}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2015}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 5.0, "year": 2015}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 41.0, "year": 2015}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2015}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 9.0, "year": 2015}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 5.0, "year": 2015}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 21.0, "year": 2015}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 1.0, "year": 2015}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2015}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 5.0, "year": 2015}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 16.0, "year": 2015}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2015}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 2.0, "year": 2015}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2015}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2015}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 6.0, "year": 2015}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 2.0, "year": 2015}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 2.0, "year": 2015}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 2.0, "year": 2015}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 13.0, "year": 2015}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2015}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2015}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2015}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2015}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2015}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2015}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2015}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 3.0, "year": 2015}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 5.0, "year": 2015}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2015}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 2.0, "year": 2015}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2015}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2015}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 7.0, "year": 2015}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 10.0, "year": 2015}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 17.0, "year": 2015}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 2.0, "year": 2015}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 11.0, "year": 2015}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2015}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 8.0, "year": 2015}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2015}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2015}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2015}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2015}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 6.0, "year": 2015}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 5.0, "year": 2015}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2015}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 13.0, "year": 2015}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2015}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2015}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 11.0, "year": 2015}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 14.0, "year": 2015}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 2.0, "year": 2015}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 3.0, "year": 2015}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 2.0, "year": 2015}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2015}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2015}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2015}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2015}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2015}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2015}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 9.0, "year": 2015}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 2.0, "year": 2015}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 6.0, "year": 2015}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2015}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 16.0, "year": 2015}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2015}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 5.0, "year": 2015}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2015}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2015}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2015}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2015}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2015}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 3.0, "year": 2015}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2015}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 3.0, "year": 2015}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2015}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2015}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2015}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2015}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2015}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 5.0, "year": 2015}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2015}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2015}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2015}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2015}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2015}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2015}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2015}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2015}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2015}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2015}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2015}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2015}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 1.0, "year": 2015}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2015}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 26.0, "year": 2015}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2015}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 25.0, "year": 2015}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2015}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2015}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2015}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2015}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2015}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 3.0, "year": 2015}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2015}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2015}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2015}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2015}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2015}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2015}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 4.0, "year": 2015}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2015}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 9.0, "year": 2015}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2015}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 2.0, "year": 2015}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2015}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2015}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2015}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2015}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2015}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2015}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 4.0, "year": 2015}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2015}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2015}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2015}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2015}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 7.0, "year": 2015}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2015}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2015}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2015}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 2.0, "year": 2015}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2015}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2015}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2015}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 2.0, "year": 2015}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 3.0, "year": 2015}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2015}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2015}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2015}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2015}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2015}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2015}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2015}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2015}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2015}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 50.0, "year": 2015}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 18.0, "year": 2015}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 5.0, "year": 2015}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2015}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 5.0, "year": 2015}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2015}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2015}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2015}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2015}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2015}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2015}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2015}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2015}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2015}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 7.0, "year": 2015}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 14.0, "year": 2015}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2015}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2015}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2015}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2015}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 8.0, "year": 2015}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2015}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2015}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2015}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 3.0, "year": 2015}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2015}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2015}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 2.0, "year": 2015}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2015}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 2.0, "year": 2015}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2015}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2015}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2015}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 3.0, "year": 2015}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2015}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 4.0, "year": 2015}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2015}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2015}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 3.0, "year": 2015}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2015}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 8.0, "year": 2015}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2015}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 3.0, "year": 2015}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2015}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2015}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2015}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2015}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 7.0, "year": 2015}]}, {"2016": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2016}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2016}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2016}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2016}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2016}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2016}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2016}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2016}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2016}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2016}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2016}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2016}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2016}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 4.0, "year": 2016}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 8.0, "year": 2016}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2016}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2016}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2016}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2016}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 4.0, "year": 2016}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2016}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2016}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2016}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2016}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 7.0, "year": 2016}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2016}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 53.0, "year": 2016}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2016}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2016}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 7.0, "year": 2016}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 8.0, "year": 2016}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2016}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2016}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2016}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2016}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2016}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2016}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 5.0, "year": 2016}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2016}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2016}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 3.0, "year": 2016}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2016}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2016}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2016}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2016}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2016}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 36.0, "year": 2016}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2016}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 12.0, "year": 2016}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2016}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2016}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 5.0, "year": 2016}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2016}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2016}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 6.0, "year": 2016}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 4.0, "year": 2016}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 4.0, "year": 2016}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2016}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 12.0, "year": 2016}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 9.0, "year": 2016}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2016}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2016}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 23.0, "year": 2016}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2016}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2016}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 123.0, "year": 2016}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 17.0, "year": 2016}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2016}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 2.0, "year": 2016}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 29.0, "year": 2016}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 27.0, "year": 2016}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 11.0, "year": 2016}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 12.0, "year": 2016}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 6.0, "year": 2016}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 4.0, "year": 2016}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 6.0, "year": 2016}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 6.0, "year": 2016}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 1.0, "year": 2016}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 1.0, "year": 2016}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 9.0, "year": 2016}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 4.0, "year": 2016}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2016}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2016}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2016}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2016}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 9.0, "year": 2016}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 4.0, "year": 2016}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 12.0, "year": 2016}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 19.0, "year": 2016}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2016}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 4.0, "year": 2016}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2016}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2016}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2016}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 13.0, "year": 2016}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2016}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 4.0, "year": 2016}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2016}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2016}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 4.0, "year": 2016}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2016}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2016}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 12.0, "year": 2016}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2016}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2016}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 33.0, "year": 2016}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2016}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2016}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 135.0, "year": 2016}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 5.0, "year": 2016}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 4.0, "year": 2016}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2016}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 2.0, "year": 2016}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 2.0, "year": 2016}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 79.0, "year": 2016}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 31.0, "year": 2016}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 3.0, "year": 2016}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 12.0, "year": 2016}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2016}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 12.0, "year": 2016}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2016}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 5.0, "year": 2016}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 4.0, "year": 2016}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 4.0, "year": 2016}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 10.0, "year": 2016}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2016}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 2.0, "year": 2016}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2016}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 3.0, "year": 2016}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 14.0, "year": 2016}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2016}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 4.0, "year": 2016}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 24.0, "year": 2016}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2016}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2016}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 4.0, "year": 2016}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 11.0, "year": 2016}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 8.0, "year": 2016}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 5.0, "year": 2016}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2016}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 22.0, "year": 2016}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2016}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2016}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2016}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2016}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2016}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2016}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 20.0, "year": 2016}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2016}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2016}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2016}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 5.0, "year": 2016}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2016}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2016}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2016}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2016}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2016}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 4.0, "year": 2016}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2016}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2016}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2016}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2016}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2016}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 2.0, "year": 2016}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2016}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 21.0, "year": 2016}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 3.0, "year": 2016}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2016}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 13.0, "year": 2016}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2016}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2016}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 66.0, "year": 2016}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2016}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2016}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2016}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 8.0, "year": 2016}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 13.0, "year": 2016}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 5.0, "year": 2016}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 8.0, "year": 2016}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2016}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 4.0, "year": 2016}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2016}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2016}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2016}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2016}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2016}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2016}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2016}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 6.0, "year": 2016}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 18.0, "year": 2016}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 11.0, "year": 2016}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2016}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2016}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2016}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2016}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2016}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2016}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2016}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2016}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2016}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2016}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2016}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2016}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 7.0, "year": 2016}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2016}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2016}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2016}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2016}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 6.0, "year": 2016}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2016}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2016}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2016}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2016}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2016}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2016}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 1.0, "year": 2016}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 115.0, "year": 2016}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2016}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 29.0, "year": 2016}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2016}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 30.0, "year": 2016}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 118.0, "year": 2016}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 9.0, "year": 2016}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2016}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 49.0, "year": 2016}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2016}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 20.0, "year": 2016}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 47.0, "year": 2016}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2016}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2016}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 14.0, "year": 2016}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 3.0, "year": 2016}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2016}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2016}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2016}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 11.0, "year": 2016}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2016}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 10.0, "year": 2016}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2016}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 37.0, "year": 2016}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 3.0, "year": 2016}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2016}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2016}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2016}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2016}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 10.0, "year": 2016}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2016}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 7.0, "year": 2016}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2016}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2016}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2016}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2016}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2016}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2016}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2016}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2016}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2016}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2016}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2016}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 5.0, "year": 2016}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2016}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2016}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2016}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2016}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 6.0, "year": 2016}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 15.0, "year": 2016}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2016}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2016}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 34.0, "year": 2016}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 2.0, "year": 2016}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 1.0, "year": 2016}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2016}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2016}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2016}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 3.0, "year": 2016}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 5.0, "year": 2016}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2016}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 5.0, "year": 2016}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 5.0, "year": 2016}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 2.0, "year": 2016}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2016}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2016}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2016}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 5.0, "year": 2016}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 18.0, "year": 2016}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2016}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2016}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2016}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2016}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2016}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2016}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2016}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2016}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 1.0, "year": 2016}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2016}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 9.0, "year": 2016}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2016}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2016}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 2.0, "year": 2016}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2016}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2016}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 1.0, "year": 2016}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2016}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2016}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 3.0, "year": 2016}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2016}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2016}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 31.0, "year": 2016}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2016}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2016}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2016}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2016}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2016}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2016}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 2.0, "year": 2016}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 6.0, "year": 2016}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2016}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2016}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2016}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2016}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2016}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2016}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 24.0, "year": 2016}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 4.0, "year": 2016}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 22.0, "year": 2016}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 126.0, "year": 2016}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 10.0, "year": 2016}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2016}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 38.0, "year": 2016}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 3.0, "year": 2016}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 23.0, "year": 2016}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 42.0, "year": 2016}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 7.0, "year": 2016}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 5.0, "year": 2016}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 17.0, "year": 2016}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2016}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2016}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 5.0, "year": 2016}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2016}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2016}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 7.0, "year": 2016}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2016}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 7.0, "year": 2016}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2016}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2016}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 51.0, "year": 2016}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 18.0, "year": 2016}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2016}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 6.0, "year": 2016}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 13.0, "year": 2016}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2016}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 4.0, "year": 2016}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2016}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2016}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2016}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2016}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2016}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2016}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 17.0, "year": 2016}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2016}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2016}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 14.0, "year": 2016}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2016}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2016}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 2.0, "year": 2016}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2016}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2016}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 1.0, "year": 2016}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 4.0, "year": 2016}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2016}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2016}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2016}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2016}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2016}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 19.0, "year": 2016}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 153.0, "year": 2016}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 12.0, "year": 2016}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 8.0, "year": 2016}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 5.0, "year": 2016}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2016}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 12.0, "year": 2016}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 1.0, "year": 2016}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 22.0, "year": 2016}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 21.0, "year": 2016}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 7.0, "year": 2016}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 28.0, "year": 2016}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2016}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 7.0, "year": 2016}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2016}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 6.0, "year": 2016}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 7.0, "year": 2016}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 13.0, "year": 2016}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 18.0, "year": 2016}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2016}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2016}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2016}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2016}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 19.0, "year": 2016}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2016}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 12.0, "year": 2016}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2016}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 14.0, "year": 2016}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 7.0, "year": 2016}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 10.0, "year": 2016}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 12.0, "year": 2016}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 2.0, "year": 2016}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 2.0, "year": 2016}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 9.0, "year": 2016}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2016}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2016}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2016}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2016}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2016}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2016}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2016}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 41.0, "year": 2016}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 4.0, "year": 2016}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2016}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2016}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 17.0, "year": 2016}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2016}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 9.0, "year": 2016}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2016}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 38.0, "year": 2016}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 5.0, "year": 2016}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2016}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 6.0, "year": 2016}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2016}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2016}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2016}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 6.0, "year": 2016}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2016}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2016}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 9.0, "year": 2016}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 124.0, "year": 2016}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 20.0, "year": 2016}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 47.0, "year": 2016}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 11.0, "year": 2016}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 65.0, "year": 2016}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 10.0, "year": 2016}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 131.0, "year": 2016}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 88.0, "year": 2016}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 35.0, "year": 2016}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 108.0, "year": 2016}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2016}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 69.0, "year": 2016}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 5.0, "year": 2016}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 8.0, "year": 2016}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 45.0, "year": 2016}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 44.0, "year": 2016}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 36.0, "year": 2016}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 77.0, "year": 2016}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 13.0, "year": 2016}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 13.0, "year": 2016}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 5.0, "year": 2016}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 19.0, "year": 2016}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 5.0, "year": 2016}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 18.0, "year": 2016}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 148.0, "year": 2016}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 6.0, "year": 2016}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 20.0, "year": 2016}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 14.0, "year": 2016}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 129.0, "year": 2016}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 18.0, "year": 2016}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 29.0, "year": 2016}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 24.0, "year": 2016}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 84.0, "year": 2016}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 30.0, "year": 2016}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 9.0, "year": 2016}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2016}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 52.0, "year": 2016}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 13.0, "year": 2016}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2016}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 110.0, "year": 2016}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 7.0, "year": 2016}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 2.0, "year": 2016}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 21.0, "year": 2016}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2016}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 6.0, "year": 2016}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 9.0, "year": 2016}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2016}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2016}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2016}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 9.0, "year": 2016}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2016}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 5.0, "year": 2016}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2016}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2016}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2016}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 5.0, "year": 2016}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 9.0, "year": 2016}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2016}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2016}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2016}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2016}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 14.0, "year": 2016}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2016}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2016}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 26.0, "year": 2016}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 6.0, "year": 2016}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2016}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2016}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 4.0, "year": 2016}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 13.0, "year": 2016}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2016}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2016}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2016}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2016}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2016}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2016}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2016}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2016}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2016}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 4.0, "year": 2016}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2016}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 3.0, "year": 2016}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 2.0, "year": 2016}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2016}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2016}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2016}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2016}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2016}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2016}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2016}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2016}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 39.0, "year": 2016}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2016}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2016}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2016}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2016}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 1.0, "year": 2016}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2016}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2016}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2016}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2016}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2016}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 18.0, "year": 2016}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2016}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2016}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2016}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2016}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 5.0, "year": 2016}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 6.0, "year": 2016}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2016}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2016}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2016}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 6.0, "year": 2016}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2016}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2016}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2016}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2016}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 11.0, "year": 2016}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 4.0, "year": 2016}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 6.0, "year": 2016}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 2.0, "year": 2016}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 4.0, "year": 2016}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 15.0, "year": 2016}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 3.0, "year": 2016}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 4.0, "year": 2016}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 12.0, "year": 2016}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 2.0, "year": 2016}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2016}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2016}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 5.0, "year": 2016}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 45.0, "year": 2016}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2016}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 10.0, "year": 2016}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 6.0, "year": 2016}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 22.0, "year": 2016}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2016}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 5.0, "year": 2016}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 17.0, "year": 2016}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2016}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 4.0, "year": 2016}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2016}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2016}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 7.0, "year": 2016}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 4.0, "year": 2016}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 2.0, "year": 2016}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 3.0, "year": 2016}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 16.0, "year": 2016}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2016}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2016}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2016}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2016}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2016}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2016}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2016}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2016}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 6.0, "year": 2016}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2016}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2016}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2016}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2016}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 7.0, "year": 2016}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2016}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 10.0, "year": 2016}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 2.0, "year": 2016}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 17.0, "year": 2016}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 2.0, "year": 2016}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 12.0, "year": 2016}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2016}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 8.0, "year": 2016}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2016}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2016}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2016}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2016}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 6.0, "year": 2016}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 5.0, "year": 2016}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2016}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 14.0, "year": 2016}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2016}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2016}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 11.0, "year": 2016}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 14.0, "year": 2016}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 2.0, "year": 2016}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 4.0, "year": 2016}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 3.0, "year": 2016}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2016}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2016}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2016}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2016}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2016}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 14.0, "year": 2016}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2016}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 9.0, "year": 2016}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 2.0, "year": 2016}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 6.0, "year": 2016}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2016}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 16.0, "year": 2016}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 1.0, "year": 2016}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 5.0, "year": 2016}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2016}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2016}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2016}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2016}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 1.0, "year": 2016}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 5.0, "year": 2016}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2016}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2016}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2016}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2016}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2016}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2016}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 5.0, "year": 2016}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2016}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2016}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2016}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2016}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2016}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2016}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2016}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2016}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2016}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2016}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2016}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2016}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2016}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 1.0, "year": 2016}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2016}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 27.0, "year": 2016}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 14.0, "year": 2016}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 28.0, "year": 2016}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2016}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2016}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2016}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2016}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2016}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2016}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2016}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2016}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2016}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2016}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2016}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2016}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2016}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 4.0, "year": 2016}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2016}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 10.0, "year": 2016}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2016}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2016}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 2.0, "year": 2016}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2016}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2016}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2016}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2016}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2016}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2016}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 4.0, "year": 2016}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2016}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2016}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 2.0, "year": 2016}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2016}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2016}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 7.0, "year": 2016}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 4.0, "year": 2016}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2016}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2016}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 2.0, "year": 2016}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 2.0, "year": 2016}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2016}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2016}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2016}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2016}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2016}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 4.0, "year": 2016}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2016}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2016}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2016}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2016}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2016}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2016}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2016}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2016}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2016}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 51.0, "year": 2016}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2016}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 19.0, "year": 2016}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 7.0, "year": 2016}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 2.0, "year": 2016}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2016}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 6.0, "year": 2016}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 2.0, "year": 2016}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2016}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2016}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2016}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2016}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2016}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2016}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2016}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2016}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2016}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2016}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2016}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 17.0, "year": 2016}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 2.0, "year": 2016}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2016}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2016}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2016}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 8.0, "year": 2016}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2016}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2016}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2016}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 3.0, "year": 2016}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2016}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2016}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2016}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2016}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 2.0, "year": 2016}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2016}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 1.0, "year": 2016}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2016}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 3.0, "year": 2016}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2016}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 4.0, "year": 2016}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2016}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2016}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 3.0, "year": 2016}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 2.0, "year": 2016}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2016}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 8.0, "year": 2016}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2016}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 3.0, "year": 2016}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2016}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2016}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2016}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2016}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 9.0, "year": 2016}]}, {"2017": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2017}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2017}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2017}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2017}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2017}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2017}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2017}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2017}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2017}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2017}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2017}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2017}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2017}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 5.0, "year": 2017}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 10.0, "year": 2017}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2017}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2017}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2017}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2017}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 5.0, "year": 2017}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2017}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2017}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2017}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2017}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 7.0, "year": 2017}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2017}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 55.0, "year": 2017}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2017}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2017}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 7.0, "year": 2017}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 9.0, "year": 2017}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2017}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2017}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2017}, {"source": "1", "target": "37", "source_name": "big bang theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2017}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2017}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 5.0, "year": 2017}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2017}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2017}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 4.0, "year": 2017}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2017}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2017}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2017}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2017}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2017}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 40.0, "year": 2017}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 2.0, "year": 2017}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 12.0, "year": 2017}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2017}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2017}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 8.0, "year": 2017}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2017}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2017}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 6.0, "year": 2017}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 5.0, "year": 2017}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 5.0, "year": 2017}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2017}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 16.0, "year": 2017}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 9.0, "year": 2017}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2017}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2017}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 27.0, "year": 2017}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2017}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2017}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 142.0, "year": 2017}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 19.0, "year": 2017}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2017}, {"source": "2", "target": "27", "source_name": "cosmological constant", "target_name": "negative pressure", "weight": 1.0, "year": 2017}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 3.0, "year": 2017}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 31.0, "year": 2017}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 28.0, "year": 2017}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 11.0, "year": 2017}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 17.0, "year": 2017}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 7.0, "year": 2017}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 4.0, "year": 2017}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 2.0, "year": 2017}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 7.0, "year": 2017}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 7.0, "year": 2017}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 2.0, "year": 2017}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 1.0, "year": 2017}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 17.0, "year": 2017}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 4.0, "year": 2017}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2017}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 2.0, "year": 2017}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2017}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2017}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 10.0, "year": 2017}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 7.0, "year": 2017}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 15.0, "year": 2017}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 22.0, "year": 2017}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2017}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 6.0, "year": 2017}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2017}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2017}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2017}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 13.0, "year": 2017}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2017}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 4.0, "year": 2017}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2017}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2017}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 5.0, "year": 2017}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2017}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2017}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 14.0, "year": 2017}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2017}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2017}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 35.0, "year": 2017}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2017}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2017}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 144.0, "year": 2017}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 5.0, "year": 2017}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 4.0, "year": 2017}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2017}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 3.0, "year": 2017}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 3.0, "year": 2017}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 85.0, "year": 2017}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 32.0, "year": 2017}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 3.0, "year": 2017}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 15.0, "year": 2017}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2017}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 13.0, "year": 2017}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2017}, {"source": "3", "target": "37", "source_name": "dark energy", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 7.0, "year": 2017}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 4.0, "year": 2017}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 5.0, "year": 2017}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 10.0, "year": 2017}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2017}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 2.0, "year": 2017}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2017}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 5.0, "year": 2017}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 16.0, "year": 2017}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 3.0, "year": 2017}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 5.0, "year": 2017}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 26.0, "year": 2017}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2017}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2017}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 5.0, "year": 2017}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 11.0, "year": 2017}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 9.0, "year": 2017}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 5.0, "year": 2017}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2017}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 22.0, "year": 2017}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 2.0, "year": 2017}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2017}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2017}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 1.0, "year": 2017}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2017}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2017}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2017}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 20.0, "year": 2017}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2017}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2017}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2017}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 5.0, "year": 2017}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2017}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2017}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2017}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2017}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2017}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2017}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2017}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2017}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2017}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2017}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 2.0, "year": 2017}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2017}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 22.0, "year": 2017}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 3.0, "year": 2017}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2017}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 15.0, "year": 2017}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2017}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2017}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 70.0, "year": 2017}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 12.0, "year": 2017}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2017}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2017}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 8.0, "year": 2017}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 13.0, "year": 2017}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 8.0, "year": 2017}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 8.0, "year": 2017}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2017}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 5.0, "year": 2017}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2017}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2017}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2017}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2017}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2017}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2017}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 9.0, "year": 2017}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 6.0, "year": 2017}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 18.0, "year": 2017}, {"source": "5", "target": "65", "source_name": "scale factor", "target_name": "detailed balance", "weight": 2.0, "year": 2017}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 11.0, "year": 2017}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2017}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2017}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2017}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2017}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2017}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2017}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2017}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2017}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2017}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2017}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2017}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2017}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 8.0, "year": 2017}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2017}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2017}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2017}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2017}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 7.0, "year": 2017}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2017}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "8", "target": "33", "source_name": "power law", "target_name": "quantum gravity", "weight": 1.0, "year": 2017}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2017}, {"source": "8", "target": "42", "source_name": "power law", "target_name": "planck mass", "weight": 1.0, "year": 2017}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2017}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2017}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "8", "target": "70", "source_name": "power law", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2017}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2017}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 3.0, "year": 2017}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 120.0, "year": 2017}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2017}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 31.0, "year": 2017}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 3.0, "year": 2017}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 32.0, "year": 2017}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 125.0, "year": 2017}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 11.0, "year": 2017}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2017}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 49.0, "year": 2017}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2017}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 20.0, "year": 2017}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 52.0, "year": 2017}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2017}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2017}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2017}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 15.0, "year": 2017}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 3.0, "year": 2017}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2017}, {"source": "9", "target": "44", "source_name": "loop quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2017}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2017}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2017}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 11.0, "year": 2017}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2017}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 10.0, "year": 2017}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 9.0, "year": 2017}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 41.0, "year": 2017}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2017}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2017}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2017}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2017}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2017}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 10.0, "year": 2017}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2017}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 7.0, "year": 2017}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2017}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2017}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2017}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2017}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2017}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2017}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2017}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2017}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2017}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2017}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2017}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 5.0, "year": 2017}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2017}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2017}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2017}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 6.0, "year": 2017}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 16.0, "year": 2017}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2017}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2017}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 42.0, "year": 2017}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 5.0, "year": 2017}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 1.0, "year": 2017}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 1.0, "year": 2017}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2017}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 3.0, "year": 2017}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 6.0, "year": 2017}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2017}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2017}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 5.0, "year": 2017}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 7.0, "year": 2017}, {"source": "12", "target": "44", "source_name": "quantum mechanics", "target_name": "bianchi ix", "weight": 1.0, "year": 2017}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 3.0, "year": 2017}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2017}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2017}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 3.0, "year": 2017}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2017}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2017}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 5.0, "year": 2017}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 18.0, "year": 2017}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2017}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 2.0, "year": 2017}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2017}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "13", "target": "37", "source_name": "cosmological principle", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2017}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2017}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2017}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2017}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2017}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 1.0, "year": 2017}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2017}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 11.0, "year": 2017}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2017}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2017}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 3.0, "year": 2017}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2017}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2017}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 2.0, "year": 2017}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2017}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2017}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2017}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2017}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 35.0, "year": 2017}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2017}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2017}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2017}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2017}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2017}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2017}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 4.0, "year": 2017}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2017}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 6.0, "year": 2017}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2017}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2017}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2017}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2017}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2017}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 28.0, "year": 2017}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 5.0, "year": 2017}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 24.0, "year": 2017}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 133.0, "year": 2017}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 12.0, "year": 2017}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2017}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 38.0, "year": 2017}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 3.0, "year": 2017}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 23.0, "year": 2017}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 47.0, "year": 2017}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 8.0, "year": 2017}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 5.0, "year": 2017}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 19.0, "year": 2017}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2017}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2017}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 5.0, "year": 2017}, {"source": "16", "target": "44", "source_name": "quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2017}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2017}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2017}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 7.0, "year": 2017}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2017}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 8.0, "year": 2017}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 8.0, "year": 2017}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2017}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 55.0, "year": 2017}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 20.0, "year": 2017}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2017}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 7.0, "year": 2017}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 15.0, "year": 2017}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2017}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 4.0, "year": 2017}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2017}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2017}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2017}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2017}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2017}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2017}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 18.0, "year": 2017}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2017}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2017}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 15.0, "year": 2017}, {"source": "18", "target": "33", "source_name": "cold dark matter", "target_name": "quantum gravity", "weight": 1.0, "year": 2017}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2017}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2017}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2017}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2017}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "18", "target": "69", "source_name": "cold dark matter", "target_name": "planck length", "weight": 1.0, "year": 2017}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2017}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 5.0, "year": 2017}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2017}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 3.0, "year": 2017}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2017}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 20.0, "year": 2017}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 163.0, "year": 2017}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 12.0, "year": 2017}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 8.0, "year": 2017}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 5.0, "year": 2017}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2017}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 13.0, "year": 2017}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 2.0, "year": 2017}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 22.0, "year": 2017}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 21.0, "year": 2017}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 7.0, "year": 2017}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 34.0, "year": 2017}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2017}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 8.0, "year": 2017}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2017}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 8.0, "year": 2017}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 8.0, "year": 2017}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 14.0, "year": 2017}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 20.0, "year": 2017}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2017}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "20", "target": "44", "source_name": "general relativity", "target_name": "bianchi ix", "weight": 2.0, "year": 2017}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2017}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2017}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2017}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2017}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2017}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 13.0, "year": 2017}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2017}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 16.0, "year": 2017}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 8.0, "year": 2017}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 10.0, "year": 2017}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 14.0, "year": 2017}, {"source": "20", "target": "65", "source_name": "general relativity", "target_name": "detailed balance", "weight": 2.0, "year": 2017}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 2.0, "year": 2017}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 3.0, "year": 2017}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 10.0, "year": 2017}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2017}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2017}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2017}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2017}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2017}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 45.0, "year": 2017}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 6.0, "year": 2017}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2017}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2017}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 18.0, "year": 2017}, {"source": "22", "target": "29", "source_name": "loop quantum gravity", "target_name": "cosmic rays", "weight": 1.0, "year": 2017}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 9.0, "year": 2017}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2017}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 42.0, "year": 2017}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 6.0, "year": 2017}, {"source": "22", "target": "38", "source_name": "loop quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2017}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2017}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 7.0, "year": 2017}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2017}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2017}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2017}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 7.0, "year": 2017}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2017}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2017}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 11.0, "year": 2017}, {"source": "22", "target": "66", "source_name": "loop quantum gravity", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "22", "target": "70", "source_name": "loop quantum gravity", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 132.0, "year": 2017}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 20.0, "year": 2017}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 48.0, "year": 2017}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 12.0, "year": 2017}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 69.0, "year": 2017}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 11.0, "year": 2017}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 139.0, "year": 2017}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 90.0, "year": 2017}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 37.0, "year": 2017}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 127.0, "year": 2017}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2017}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 71.0, "year": 2017}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 5.0, "year": 2017}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 9.0, "year": 2017}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 50.0, "year": 2017}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 44.0, "year": 2017}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 36.0, "year": 2017}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 84.0, "year": 2017}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 15.0, "year": 2017}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 14.0, "year": 2017}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 7.0, "year": 2017}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 27.0, "year": 2017}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 5.0, "year": 2017}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 21.0, "year": 2017}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 157.0, "year": 2017}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 6.0, "year": 2017}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 20.0, "year": 2017}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 16.0, "year": 2017}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 134.0, "year": 2017}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 18.0, "year": 2017}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 30.0, "year": 2017}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 26.0, "year": 2017}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 88.0, "year": 2017}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 37.0, "year": 2017}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 10.0, "year": 2017}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2017}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 58.0, "year": 2017}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 14.0, "year": 2017}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2017}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 116.0, "year": 2017}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 8.0, "year": 2017}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 4.0, "year": 2017}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 24.0, "year": 2017}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 4.0, "year": 2017}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 7.0, "year": 2017}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 11.0, "year": 2017}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2017}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2017}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 9.0, "year": 2017}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2017}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 8.0, "year": 2017}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2017}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2017}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 5.0, "year": 2017}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 11.0, "year": 2017}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2017}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2017}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2017}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2017}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 14.0, "year": 2017}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2017}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 29.0, "year": 2017}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 9.0, "year": 2017}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2017}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 4.0, "year": 2017}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 13.0, "year": 2017}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2017}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2017}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2017}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2017}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2017}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2017}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2017}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2017}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 3.0, "year": 2017}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 2.0, "year": 2017}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2017}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2017}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2017}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2017}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2017}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 12.0, "year": 2017}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 2.0, "year": 2017}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 40.0, "year": 2017}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2017}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2017}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "26", "target": "58", "source_name": "cosmic microwave background radiation", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2017}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2017}, {"source": "27", "target": "30", "source_name": "negative pressure", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 2.0, "year": 2017}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2017}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2017}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2017}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "28", "target": "29", "source_name": "big bounce", "target_name": "cosmic rays", "weight": 1.0, "year": 2017}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2017}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2017}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 19.0, "year": 2017}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2017}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2017}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2017}, {"source": "28", "target": "41", "source_name": "big bounce", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2017}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 6.0, "year": 2017}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 8.0, "year": 2017}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2017}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2017}, {"source": "28", "target": "70", "source_name": "big bounce", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2017}, {"source": "29", "target": "33", "source_name": "cosmic rays", "target_name": "quantum gravity", "weight": 1.0, "year": 2017}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 7.0, "year": 2017}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2017}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 2.0, "year": 2017}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2017}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2017}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "29", "target": "70", "source_name": "cosmic rays", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 12.0, "year": 2017}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 4.0, "year": 2017}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 8.0, "year": 2017}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 2.0, "year": 2017}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 4.0, "year": 2017}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 16.0, "year": 2017}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 3.0, "year": 2017}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 4.0, "year": 2017}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 12.0, "year": 2017}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 3.0, "year": 2017}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2017}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2017}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 7.0, "year": 2017}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 48.0, "year": 2017}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 3.0, "year": 2017}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 10.0, "year": 2017}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 7.0, "year": 2017}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 22.0, "year": 2017}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2017}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 7.0, "year": 2017}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 17.0, "year": 2017}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 4.0, "year": 2017}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 4.0, "year": 2017}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2017}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 8.0, "year": 2017}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 4.0, "year": 2017}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 3.0, "year": 2017}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 3.0, "year": 2017}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 16.0, "year": 2017}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2017}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2017}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2017}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2017}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2017}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2017}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2017}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2017}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 6.0, "year": 2017}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2017}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2017}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2017}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2017}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 7.0, "year": 2017}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2017}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2017}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 10.0, "year": 2017}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 17.0, "year": 2017}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2017}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 2.0, "year": 2017}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 16.0, "year": 2017}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2017}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 8.0, "year": 2017}, {"source": "32", "target": "38", "source_name": "field theory", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 4.0, "year": 2017}, {"source": "32", "target": "43", "source_name": "field theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2017}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2017}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2017}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 5.0, "year": 2017}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 4.0, "year": 2017}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 6.0, "year": 2017}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 5.0, "year": 2017}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2017}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 16.0, "year": 2017}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2017}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 7.0, "year": 2017}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2017}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 13.0, "year": 2017}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 18.0, "year": 2017}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 3.0, "year": 2017}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 7.0, "year": 2017}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 3.0, "year": 2017}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2017}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2017}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2017}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2017}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2017}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2017}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2017}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 10.0, "year": 2017}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 4.0, "year": 2017}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 4.0, "year": 2017}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2017}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 6.0, "year": 2017}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2017}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 18.0, "year": 2017}, {"source": "33", "target": "65", "source_name": "quantum gravity", "target_name": "detailed balance", "weight": 2.0, "year": 2017}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 3.0, "year": 2017}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 5.0, "year": 2017}, {"source": "33", "target": "69", "source_name": "quantum gravity", "target_name": "planck length", "weight": 1.0, "year": 2017}, {"source": "33", "target": "70", "source_name": "quantum gravity", "target_name": "white hole", "weight": 2.0, "year": 2017}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2017}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2017}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2017}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2017}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 2.0, "year": 2017}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 5.0, "year": 2017}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2017}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2017}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2017}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2017}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2017}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2017}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 5.0, "year": 2017}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2017}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2017}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2017}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2017}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2017}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2017}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2017}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2017}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 3.0, "year": 2017}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2017}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2017}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 2.0, "year": 2017}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2017}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 1.0, "year": 2017}, {"source": "38", "target": "41", "source_name": "particle physics", "target_name": "black hole", "weight": 1.0, "year": 2017}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2017}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 27.0, "year": 2017}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2017}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 3.0, "year": 2017}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 30.0, "year": 2017}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2017}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "38", "target": "70", "source_name": "particle physics", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 1.0, "year": 2017}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 7.0, "year": 2017}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2017}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2017}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2017}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2017}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2017}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 9.0, "year": 2017}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2017}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2017}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2017}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2017}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 5.0, "year": 2017}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2017}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 10.0, "year": 2017}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2017}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2017}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 2.0, "year": 2017}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2017}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2017}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2017}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2017}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2017}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 3.0, "year": 2017}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2017}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 5.0, "year": 2017}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2017}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2017}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2017}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2017}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2017}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 8.0, "year": 2017}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2017}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2017}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2017}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 3.0, "year": 2017}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 3.0, "year": 2017}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2017}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "44", "target": "60", "source_name": "bianchi ix", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 3.0, "year": 2017}, {"source": "44", "target": "66", "source_name": "bianchi ix", "target_name": "wave function", "weight": 1.0, "year": 2017}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2017}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2017}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2017}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "45", "target": "57", "source_name": "vacuum energy", "target_name": "big rip", "weight": 3.0, "year": 2017}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 7.0, "year": 2017}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2017}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2017}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2017}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2017}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2017}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2017}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 5.0, "year": 2017}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2017}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 54.0, "year": 2017}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2017}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 21.0, "year": 2017}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 8.0, "year": 2017}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2017}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 7.0, "year": 2017}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 2.0, "year": 2017}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2017}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2017}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 1.0, "year": 2017}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2017}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2017}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2017}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2017}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2017}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2017}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2017}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2017}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2017}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 18.0, "year": 2017}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 3.0, "year": 2017}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2017}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2017}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2017}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 8.0, "year": 2017}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2017}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2017}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2017}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2017}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 3.0, "year": 2017}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2017}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2017}, {"source": "54", "target": "70", "source_name": "planck scale", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2017}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 1.0, "year": 2017}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 3.0, "year": 2017}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2017}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 2.0, "year": 2017}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2017}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 3.0, "year": 2017}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2017}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2017}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2017}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 3.0, "year": 2017}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 2.0, "year": 2017}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2017}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 8.0, "year": 2017}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2017}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 4.0, "year": 2017}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 3.0, "year": 2017}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2017}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2017}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2017}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 11.0, "year": 2017}]}, {"2018": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2018}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2018}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2018}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2018}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2018}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2018}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2018}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2018}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2018}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2018}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2018}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2018}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2018}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 5.0, "year": 2018}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 10.0, "year": 2018}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2018}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2018}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2018}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 1.0, "year": 2018}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 5.0, "year": 2018}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2018}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2018}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2018}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2018}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 7.0, "year": 2018}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2018}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 56.0, "year": 2018}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 1.0, "year": 2018}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2018}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 7.0, "year": 2018}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 9.0, "year": 2018}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2018}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2018}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2018}, {"source": "1", "target": "37", "source_name": "big bang theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 2.0, "year": 2018}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 5.0, "year": 2018}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2018}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2018}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2018}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 4.0, "year": 2018}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2018}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2018}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2018}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2018}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2018}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 43.0, "year": 2018}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 3.0, "year": 2018}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 13.0, "year": 2018}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2018}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2018}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2018}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2018}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2018}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 6.0, "year": 2018}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 6.0, "year": 2018}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 5.0, "year": 2018}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2018}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 19.0, "year": 2018}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 9.0, "year": 2018}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2018}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2018}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 27.0, "year": 2018}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2018}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2018}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 148.0, "year": 2018}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 19.0, "year": 2018}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2018}, {"source": "2", "target": "27", "source_name": "cosmological constant", "target_name": "negative pressure", "weight": 2.0, "year": 2018}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 3.0, "year": 2018}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 35.0, "year": 2018}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 28.0, "year": 2018}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 11.0, "year": 2018}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 18.0, "year": 2018}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 7.0, "year": 2018}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 5.0, "year": 2018}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 2.0, "year": 2018}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "2", "target": "39", "source_name": "cosmological constant", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 8.0, "year": 2018}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 9.0, "year": 2018}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 2.0, "year": 2018}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 2.0, "year": 2018}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 1.0, "year": 2018}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 17.0, "year": 2018}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 4.0, "year": 2018}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2018}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 3.0, "year": 2018}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2018}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2018}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 10.0, "year": 2018}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 7.0, "year": 2018}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 15.0, "year": 2018}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 23.0, "year": 2018}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2018}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 6.0, "year": 2018}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2018}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2018}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2018}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 15.0, "year": 2018}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2018}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 4.0, "year": 2018}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2018}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 5.0, "year": 2018}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 5.0, "year": 2018}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2018}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2018}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 17.0, "year": 2018}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2018}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2018}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 36.0, "year": 2018}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2018}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2018}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 160.0, "year": 2018}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 6.0, "year": 2018}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 6.0, "year": 2018}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2018}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 4.0, "year": 2018}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 3.0, "year": 2018}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 98.0, "year": 2018}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 33.0, "year": 2018}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 5.0, "year": 2018}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 16.0, "year": 2018}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2018}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 14.0, "year": 2018}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "3", "target": "37", "source_name": "dark energy", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 7.0, "year": 2018}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 5.0, "year": 2018}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 6.0, "year": 2018}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 17.0, "year": 2018}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2018}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 3.0, "year": 2018}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2018}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 5.0, "year": 2018}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 17.0, "year": 2018}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 4.0, "year": 2018}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 6.0, "year": 2018}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 29.0, "year": 2018}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 4.0, "year": 2018}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2018}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 5.0, "year": 2018}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 11.0, "year": 2018}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 11.0, "year": 2018}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 5.0, "year": 2018}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2018}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 23.0, "year": 2018}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 2.0, "year": 2018}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2018}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2018}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 2.0, "year": 2018}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2018}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2018}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2018}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 26.0, "year": 2018}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2018}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2018}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2018}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 6.0, "year": 2018}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2018}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2018}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2018}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2018}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2018}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 2.0, "year": 2018}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 2.0, "year": 2018}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2018}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 9.0, "year": 2018}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2018}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2018}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 13.0, "year": 2018}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2018}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2018}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 2.0, "year": 2018}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2018}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 24.0, "year": 2018}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 3.0, "year": 2018}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2018}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 16.0, "year": 2018}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 1.0, "year": 2018}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2018}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 76.0, "year": 2018}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 13.0, "year": 2018}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2018}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 7.0, "year": 2018}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 9.0, "year": 2018}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 14.0, "year": 2018}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 9.0, "year": 2018}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 9.0, "year": 2018}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2018}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 5.0, "year": 2018}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2018}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2018}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2018}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2018}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2018}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 10.0, "year": 2018}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 8.0, "year": 2018}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 22.0, "year": 2018}, {"source": "5", "target": "65", "source_name": "scale factor", "target_name": "detailed balance", "weight": 2.0, "year": 2018}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 11.0, "year": 2018}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2018}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2018}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2018}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 1.0, "year": 2018}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 16.0, "year": 2018}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2018}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2018}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2018}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2018}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2018}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2018}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2018}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 8.0, "year": 2018}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2018}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2018}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2018}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2018}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2018}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 7.0, "year": 2018}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2018}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "8", "target": "33", "source_name": "power law", "target_name": "quantum gravity", "weight": 1.0, "year": 2018}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "8", "target": "42", "source_name": "power law", "target_name": "planck mass", "weight": 1.0, "year": 2018}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2018}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "8", "target": "70", "source_name": "power law", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2018}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2018}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 3.0, "year": 2018}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 128.0, "year": 2018}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2018}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 32.0, "year": 2018}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 4.0, "year": 2018}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 34.0, "year": 2018}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 133.0, "year": 2018}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 11.0, "year": 2018}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2018}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 49.0, "year": 2018}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2018}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 20.0, "year": 2018}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 54.0, "year": 2018}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2018}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2018}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2018}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 15.0, "year": 2018}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 3.0, "year": 2018}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2018}, {"source": "9", "target": "44", "source_name": "loop quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2018}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2018}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2018}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 11.0, "year": 2018}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2018}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 10.0, "year": 2018}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 12.0, "year": 2018}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 44.0, "year": 2018}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2018}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2018}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2018}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2018}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2018}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 10.0, "year": 2018}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2018}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 7.0, "year": 2018}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2018}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2018}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2018}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2018}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2018}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2018}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2018}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2018}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2018}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2018}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2018}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 5.0, "year": 2018}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2018}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2018}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2018}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 6.0, "year": 2018}, {"source": "12", "target": "19", "source_name": "quantum mechanics", "target_name": "path integral", "weight": 1.0, "year": 2018}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 18.0, "year": 2018}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2018}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2018}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 47.0, "year": 2018}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 7.0, "year": 2018}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 1.0, "year": 2018}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 2.0, "year": 2018}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2018}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2018}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 4.0, "year": 2018}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 8.0, "year": 2018}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2018}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2018}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 5.0, "year": 2018}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 8.0, "year": 2018}, {"source": "12", "target": "44", "source_name": "quantum mechanics", "target_name": "bianchi ix", "weight": 1.0, "year": 2018}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2018}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 4.0, "year": 2018}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 3.0, "year": 2018}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2018}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2018}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 3.0, "year": 2018}, {"source": "12", "target": "68", "source_name": "quantum mechanics", "target_name": "effective field theory", "weight": 1.0, "year": 2018}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2018}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2018}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 5.0, "year": 2018}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 19.0, "year": 2018}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2018}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 3.0, "year": 2018}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2018}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "13", "target": "37", "source_name": "cosmological principle", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2018}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 2.0, "year": 2018}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2018}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2018}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2018}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 1.0, "year": 2018}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2018}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 11.0, "year": 2018}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2018}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2018}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 3.0, "year": 2018}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2018}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2018}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 2.0, "year": 2018}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2018}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2018}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 4.0, "year": 2018}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2018}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2018}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 35.0, "year": 2018}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2018}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2018}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2018}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2018}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2018}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2018}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 4.0, "year": 2018}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2018}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2018}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 6.0, "year": 2018}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2018}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2018}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2018}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2018}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 5.0, "year": 2018}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2018}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2018}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 29.0, "year": 2018}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 6.0, "year": 2018}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 26.0, "year": 2018}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 145.0, "year": 2018}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 12.0, "year": 2018}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2018}, {"source": "16", "target": "27", "source_name": "quantum cosmology", "target_name": "negative pressure", "weight": 1.0, "year": 2018}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 38.0, "year": 2018}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 6.0, "year": 2018}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 23.0, "year": 2018}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 49.0, "year": 2018}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 8.0, "year": 2018}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2018}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 21.0, "year": 2018}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 6.0, "year": 2018}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2018}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 6.0, "year": 2018}, {"source": "16", "target": "44", "source_name": "quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2018}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2018}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "16", "target": "49", "source_name": "quantum cosmology", "target_name": "fred hoyle", "weight": 1.0, "year": 2018}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2018}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2018}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 7.0, "year": 2018}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2018}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 8.0, "year": 2018}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 11.0, "year": 2018}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2018}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 59.0, "year": 2018}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 21.0, "year": 2018}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2018}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 7.0, "year": 2018}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 15.0, "year": 2018}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2018}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 4.0, "year": 2018}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2018}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2018}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2018}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2018}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2018}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2018}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 18.0, "year": 2018}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2018}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2018}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 15.0, "year": 2018}, {"source": "18", "target": "33", "source_name": "cold dark matter", "target_name": "quantum gravity", "weight": 1.0, "year": 2018}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2018}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2018}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2018}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2018}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2018}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 4.0, "year": 2018}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "18", "target": "69", "source_name": "cold dark matter", "target_name": "planck length", "weight": 1.0, "year": 2018}, {"source": "19", "target": "20", "source_name": "path integral", "target_name": "general relativity", "weight": 1.0, "year": 2018}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2018}, {"source": "19", "target": "23", "source_name": "path integral", "target_name": "big bang", "weight": 1.0, "year": 2018}, {"source": "19", "target": "32", "source_name": "path integral", "target_name": "field theory", "weight": 1.0, "year": 2018}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 6.0, "year": 2018}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2018}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 4.0, "year": 2018}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "19", "target": "56", "source_name": "path integral", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 2.0, "year": 2018}, {"source": "19", "target": "68", "source_name": "path integral", "target_name": "effective field theory", "weight": 1.0, "year": 2018}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2018}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 21.0, "year": 2018}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 172.0, "year": 2018}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 12.0, "year": 2018}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 8.0, "year": 2018}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 5.0, "year": 2018}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2018}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 13.0, "year": 2018}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 2.0, "year": 2018}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 23.0, "year": 2018}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 21.0, "year": 2018}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 8.0, "year": 2018}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 42.0, "year": 2018}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2018}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 9.0, "year": 2018}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 8.0, "year": 2018}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 8.0, "year": 2018}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 14.0, "year": 2018}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 25.0, "year": 2018}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2018}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "20", "target": "44", "source_name": "general relativity", "target_name": "bianchi ix", "weight": 2.0, "year": 2018}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2018}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2018}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2018}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2018}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 13.0, "year": 2018}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2018}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 17.0, "year": 2018}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 8.0, "year": 2018}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 11.0, "year": 2018}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 14.0, "year": 2018}, {"source": "20", "target": "65", "source_name": "general relativity", "target_name": "detailed balance", "weight": 2.0, "year": 2018}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 3.0, "year": 2018}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 3.0, "year": 2018}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 11.0, "year": 2018}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 3.0, "year": 2018}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2018}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2018}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2018}, {"source": "21", "target": "60", "source_name": "phase space", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 5.0, "year": 2018}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2018}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 49.0, "year": 2018}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 6.0, "year": 2018}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2018}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2018}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 18.0, "year": 2018}, {"source": "22", "target": "29", "source_name": "loop quantum gravity", "target_name": "cosmic rays", "weight": 1.0, "year": 2018}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2018}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 9.0, "year": 2018}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2018}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 46.0, "year": 2018}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 8.0, "year": 2018}, {"source": "22", "target": "38", "source_name": "loop quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2018}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2018}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 7.0, "year": 2018}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2018}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2018}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2018}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 7.0, "year": 2018}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2018}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2018}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 11.0, "year": 2018}, {"source": "22", "target": "66", "source_name": "loop quantum gravity", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "22", "target": "70", "source_name": "loop quantum gravity", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 141.0, "year": 2018}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 22.0, "year": 2018}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 51.0, "year": 2018}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 13.0, "year": 2018}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 69.0, "year": 2018}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 11.0, "year": 2018}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 156.0, "year": 2018}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 91.0, "year": 2018}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 43.0, "year": 2018}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 140.0, "year": 2018}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2018}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 76.0, "year": 2018}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 6.0, "year": 2018}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 9.0, "year": 2018}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 54.0, "year": 2018}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 48.0, "year": 2018}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 40.0, "year": 2018}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 98.0, "year": 2018}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 15.0, "year": 2018}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 15.0, "year": 2018}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 8.0, "year": 2018}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 27.0, "year": 2018}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 5.0, "year": 2018}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 21.0, "year": 2018}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 160.0, "year": 2018}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 10.0, "year": 2018}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 22.0, "year": 2018}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 18.0, "year": 2018}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 140.0, "year": 2018}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 18.0, "year": 2018}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 30.0, "year": 2018}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 27.0, "year": 2018}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 98.0, "year": 2018}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 41.0, "year": 2018}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 12.0, "year": 2018}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2018}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 63.0, "year": 2018}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 14.0, "year": 2018}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2018}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 124.0, "year": 2018}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 10.0, "year": 2018}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 4.0, "year": 2018}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 25.0, "year": 2018}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 5.0, "year": 2018}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 7.0, "year": 2018}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 11.0, "year": 2018}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2018}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2018}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2018}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 10.0, "year": 2018}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2018}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 8.0, "year": 2018}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2018}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 5.0, "year": 2018}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 13.0, "year": 2018}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2018}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2018}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2018}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 15.0, "year": 2018}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2018}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 30.0, "year": 2018}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 10.0, "year": 2018}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2018}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 6.0, "year": 2018}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 15.0, "year": 2018}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 4.0, "year": 2018}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2018}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2018}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 4.0, "year": 2018}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2018}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2018}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2018}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2018}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 4.0, "year": 2018}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2018}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 3.0, "year": 2018}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 3.0, "year": 2018}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2018}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2018}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2018}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2018}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2018}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2018}, {"source": "26", "target": "40", "source_name": "cosmic microwave background radiation", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2018}, {"source": "26", "target": "49", "source_name": "cosmic microwave background radiation", "target_name": "fred hoyle", "weight": 1.0, "year": 2018}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2018}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 43.0, "year": 2018}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2018}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2018}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 4.0, "year": 2018}, {"source": "26", "target": "58", "source_name": "cosmic microwave background radiation", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2018}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2018}, {"source": "27", "target": "30", "source_name": "negative pressure", "target_name": "dark matter", "weight": 2.0, "year": 2018}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 2.0, "year": 2018}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2018}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2018}, {"source": "27", "target": "39", "source_name": "negative pressure", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "27", "target": "40", "source_name": "negative pressure", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "27", "target": "41", "source_name": "negative pressure", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 2.0, "year": 2018}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2018}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "28", "target": "29", "source_name": "big bounce", "target_name": "cosmic rays", "weight": 1.0, "year": 2018}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2018}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2018}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 19.0, "year": 2018}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2018}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2018}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2018}, {"source": "28", "target": "41", "source_name": "big bounce", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 6.0, "year": 2018}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 8.0, "year": 2018}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 7.0, "year": 2018}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2018}, {"source": "28", "target": "70", "source_name": "big bounce", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2018}, {"source": "29", "target": "33", "source_name": "cosmic rays", "target_name": "quantum gravity", "weight": 1.0, "year": 2018}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2018}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 7.0, "year": 2018}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2018}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 2.0, "year": 2018}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2018}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2018}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "29", "target": "70", "source_name": "cosmic rays", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 12.0, "year": 2018}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 6.0, "year": 2018}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 9.0, "year": 2018}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 3.0, "year": 2018}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 5.0, "year": 2018}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 17.0, "year": 2018}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 5.0, "year": 2018}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 5.0, "year": 2018}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 18.0, "year": 2018}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 3.0, "year": 2018}, {"source": "30", "target": "43", "source_name": "dark matter", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2018}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 2.0, "year": 2018}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 7.0, "year": 2018}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 50.0, "year": 2018}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 4.0, "year": 2018}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 11.0, "year": 2018}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 8.0, "year": 2018}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 24.0, "year": 2018}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2018}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 7.0, "year": 2018}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 18.0, "year": 2018}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 6.0, "year": 2018}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 6.0, "year": 2018}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2018}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 8.0, "year": 2018}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 6.0, "year": 2018}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 3.0, "year": 2018}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 3.0, "year": 2018}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 16.0, "year": 2018}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2018}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2018}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2018}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 3.0, "year": 2018}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 2.0, "year": 2018}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2018}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2018}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2018}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 6.0, "year": 2018}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2018}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2018}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2018}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2018}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 7.0, "year": 2018}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2018}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2018}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 10.0, "year": 2018}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 18.0, "year": 2018}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2018}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 2.0, "year": 2018}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 17.0, "year": 2018}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2018}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 10.0, "year": 2018}, {"source": "32", "target": "38", "source_name": "field theory", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "32", "target": "40", "source_name": "field theory", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 7.0, "year": 2018}, {"source": "32", "target": "43", "source_name": "field theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2018}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2018}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2018}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2018}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 6.0, "year": 2018}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 5.0, "year": 2018}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 7.0, "year": 2018}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 6.0, "year": 2018}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2018}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 19.0, "year": 2018}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2018}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 7.0, "year": 2018}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2018}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 13.0, "year": 2018}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 22.0, "year": 2018}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 3.0, "year": 2018}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 7.0, "year": 2018}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 3.0, "year": 2018}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2018}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2018}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2018}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2018}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2018}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2018}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2018}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 10.0, "year": 2018}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 4.0, "year": 2018}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 5.0, "year": 2018}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2018}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 7.0, "year": 2018}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2018}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 18.0, "year": 2018}, {"source": "33", "target": "65", "source_name": "quantum gravity", "target_name": "detailed balance", "weight": 2.0, "year": 2018}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 3.0, "year": 2018}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 6.0, "year": 2018}, {"source": "33", "target": "69", "source_name": "quantum gravity", "target_name": "planck length", "weight": 1.0, "year": 2018}, {"source": "33", "target": "70", "source_name": "quantum gravity", "target_name": "white hole", "weight": 2.0, "year": 2018}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2018}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2018}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2018}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 2.0, "year": 2018}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 5.0, "year": 2018}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2018}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2018}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2018}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2018}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2018}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2018}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 5.0, "year": 2018}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2018}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2018}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2018}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2018}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2018}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2018}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2018}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2018}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 2.0, "year": 2018}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 4.0, "year": 2018}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2018}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2018}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 2.0, "year": 2018}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2018}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 2.0, "year": 2018}, {"source": "38", "target": "41", "source_name": "particle physics", "target_name": "black hole", "weight": 1.0, "year": 2018}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2018}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 27.0, "year": 2018}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2018}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 3.0, "year": 2018}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 31.0, "year": 2018}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2018}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "38", "target": "70", "source_name": "particle physics", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 2.0, "year": 2018}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 8.0, "year": 2018}, {"source": "39", "target": "43", "source_name": "gravitational wave", "target_name": "friedmann equations", "weight": 1.0, "year": 2018}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2018}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2018}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2018}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2018}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 3.0, "year": 2018}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2018}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 2.0, "year": 2018}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 10.0, "year": 2018}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2018}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2018}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2018}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2018}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2018}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 5.0, "year": 2018}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2018}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 11.0, "year": 2018}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2018}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2018}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 3.0, "year": 2018}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2018}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2018}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2018}, {"source": "41", "target": "51", "source_name": "black hole", "target_name": "hubble constant", "weight": 1.0, "year": 2018}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2018}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 3.0, "year": 2018}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2018}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 6.0, "year": 2018}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2018}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2018}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 4.0, "year": 2018}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2018}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2018}, {"source": "41", "target": "68", "source_name": "black hole", "target_name": "effective field theory", "weight": 1.0, "year": 2018}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2018}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 8.0, "year": 2018}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2018}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2018}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2018}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 3.0, "year": 2018}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 3.0, "year": 2018}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2018}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2018}, {"source": "44", "target": "60", "source_name": "bianchi ix", "target_name": "initial condition", "weight": 1.0, "year": 2018}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 3.0, "year": 2018}, {"source": "44", "target": "66", "source_name": "bianchi ix", "target_name": "wave function", "weight": 1.0, "year": 2018}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2018}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2018}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "45", "target": "57", "source_name": "vacuum energy", "target_name": "big rip", "weight": 3.0, "year": 2018}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 7.0, "year": 2018}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2018}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2018}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2018}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2018}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2018}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 6.0, "year": 2018}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2018}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 55.0, "year": 2018}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2018}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 22.0, "year": 2018}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 10.0, "year": 2018}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 3.0, "year": 2018}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2018}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 7.0, "year": 2018}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 4.0, "year": 2018}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2018}, {"source": "49", "target": "52", "source_name": "fred hoyle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2018}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2018}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 2.0, "year": 2018}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2018}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2018}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2018}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2018}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2018}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2018}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2018}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2018}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2018}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 19.0, "year": 2018}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 3.0, "year": 2018}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2018}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2018}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2018}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 8.0, "year": 2018}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2018}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2018}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2018}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2018}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 3.0, "year": 2018}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2018}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2018}, {"source": "54", "target": "70", "source_name": "planck scale", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2018}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 2.0, "year": 2018}, {"source": "55", "target": "63", "source_name": "cosmic inflation", "target_name": "scalar field", "weight": 1.0, "year": 2018}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 3.0, "year": 2018}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2018}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 2.0, "year": 2018}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2018}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 4.0, "year": 2018}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2018}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 4.0, "year": 2018}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2018}, {"source": "56", "target": "68", "source_name": "standard model", "target_name": "effective field theory", "weight": 1.0, "year": 2018}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2018}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 3.0, "year": 2018}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 4.0, "year": 2018}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2018}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 12.0, "year": 2018}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2018}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 4.0, "year": 2018}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 4.0, "year": 2018}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2018}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2018}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2018}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 12.0, "year": 2018}]}, {"2019": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2019}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2019}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2019}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2019}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2019}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2019}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2019}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2019}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2019}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2019}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2019}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2019}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 7.0, "year": 2019}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 13.0, "year": 2019}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2019}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2019}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2019}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 3.0, "year": 2019}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 5.0, "year": 2019}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2019}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2019}, {"source": "1", "target": "16", "source_name": "big bang theory", "target_name": "quantum cosmology", "weight": 1.0, "year": 2019}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2019}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2019}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 8.0, "year": 2019}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2019}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 64.0, "year": 2019}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 2.0, "year": 2019}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2019}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2019}, {"source": "1", "target": "29", "source_name": "big bang theory", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 10.0, "year": 2019}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2019}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2019}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2019}, {"source": "1", "target": "37", "source_name": "big bang theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 3.0, "year": 2019}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 6.0, "year": 2019}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2019}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2019}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2019}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 4.0, "year": 2019}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2019}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 4.0, "year": 2019}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2019}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2019}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2019}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 47.0, "year": 2019}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 3.0, "year": 2019}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 13.0, "year": 2019}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2019}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2019}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2019}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2019}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2019}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 7.0, "year": 2019}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 6.0, "year": 2019}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 5.0, "year": 2019}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2019}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 20.0, "year": 2019}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 9.0, "year": 2019}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2019}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 3.0, "year": 2019}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 28.0, "year": 2019}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2019}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2019}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 155.0, "year": 2019}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 20.0, "year": 2019}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2019}, {"source": "2", "target": "26", "source_name": "cosmological constant", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2019}, {"source": "2", "target": "27", "source_name": "cosmological constant", "target_name": "negative pressure", "weight": 2.0, "year": 2019}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 3.0, "year": 2019}, {"source": "2", "target": "29", "source_name": "cosmological constant", "target_name": "cosmic rays", "weight": 1.0, "year": 2019}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 36.0, "year": 2019}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 29.0, "year": 2019}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 11.0, "year": 2019}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 18.0, "year": 2019}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 7.0, "year": 2019}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 5.0, "year": 2019}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 2.0, "year": 2019}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "2", "target": "39", "source_name": "cosmological constant", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 9.0, "year": 2019}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 10.0, "year": 2019}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 2.0, "year": 2019}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 2.0, "year": 2019}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 1.0, "year": 2019}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 18.0, "year": 2019}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 4.0, "year": 2019}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2019}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 3.0, "year": 2019}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2019}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 6.0, "year": 2019}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 11.0, "year": 2019}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 7.0, "year": 2019}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 15.0, "year": 2019}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2019}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 24.0, "year": 2019}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2019}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 6.0, "year": 2019}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2019}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 1.0, "year": 2019}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 5.0, "year": 2019}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 17.0, "year": 2019}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2019}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 5.0, "year": 2019}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2019}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 6.0, "year": 2019}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 7.0, "year": 2019}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2019}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2019}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 17.0, "year": 2019}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2019}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2019}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 39.0, "year": 2019}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2019}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2019}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 171.0, "year": 2019}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 6.0, "year": 2019}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 6.0, "year": 2019}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2019}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 4.0, "year": 2019}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 4.0, "year": 2019}, {"source": "3", "target": "29", "source_name": "dark energy", "target_name": "cosmic rays", "weight": 1.0, "year": 2019}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 103.0, "year": 2019}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 34.0, "year": 2019}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 5.0, "year": 2019}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 17.0, "year": 2019}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2019}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 14.0, "year": 2019}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "3", "target": "37", "source_name": "dark energy", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 8.0, "year": 2019}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 5.0, "year": 2019}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 8.0, "year": 2019}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 19.0, "year": 2019}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2019}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 3.0, "year": 2019}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 4.0, "year": 2019}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 5.0, "year": 2019}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 17.0, "year": 2019}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 4.0, "year": 2019}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 6.0, "year": 2019}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 29.0, "year": 2019}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 5.0, "year": 2019}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2019}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 5.0, "year": 2019}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 13.0, "year": 2019}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 11.0, "year": 2019}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 6.0, "year": 2019}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2019}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2019}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 25.0, "year": 2019}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 2.0, "year": 2019}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2019}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2019}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 2.0, "year": 2019}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2019}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2019}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2019}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 26.0, "year": 2019}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2019}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2019}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2019}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 6.0, "year": 2019}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2019}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 2.0, "year": 2019}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2019}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2019}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 2.0, "year": 2019}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 2.0, "year": 2019}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2019}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 9.0, "year": 2019}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2019}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2019}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 15.0, "year": 2019}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2019}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2019}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 2.0, "year": 2019}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2019}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 27.0, "year": 2019}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 3.0, "year": 2019}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2019}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 16.0, "year": 2019}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 2.0, "year": 2019}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2019}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 83.0, "year": 2019}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 13.0, "year": 2019}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2019}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 8.0, "year": 2019}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 9.0, "year": 2019}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 17.0, "year": 2019}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 9.0, "year": 2019}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 9.0, "year": 2019}, {"source": "5", "target": "38", "source_name": "scale factor", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2019}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 6.0, "year": 2019}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2019}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2019}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2019}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2019}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2019}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 10.0, "year": 2019}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 11.0, "year": 2019}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 23.0, "year": 2019}, {"source": "5", "target": "65", "source_name": "scale factor", "target_name": "detailed balance", "weight": 2.0, "year": 2019}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 13.0, "year": 2019}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2019}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2019}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2019}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 2.0, "year": 2019}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 17.0, "year": 2019}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2019}, {"source": "6", "target": "25", "source_name": "brane cosmology", "target_name": "quantum field theory", "weight": 1.0, "year": 2019}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2019}, {"source": "6", "target": "32", "source_name": "brane cosmology", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "6", "target": "33", "source_name": "brane cosmology", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2019}, {"source": "6", "target": "40", "source_name": "brane cosmology", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2019}, {"source": "6", "target": "56", "source_name": "brane cosmology", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2019}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2019}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2019}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 8.0, "year": 2019}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2019}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2019}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2019}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2019}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2019}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 7.0, "year": 2019}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2019}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "8", "target": "33", "source_name": "power law", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "8", "target": "42", "source_name": "power law", "target_name": "planck mass", "weight": 1.0, "year": 2019}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2019}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "8", "target": "70", "source_name": "power law", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2019}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2019}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 3.0, "year": 2019}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 133.0, "year": 2019}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2019}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 32.0, "year": 2019}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 5.0, "year": 2019}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 35.0, "year": 2019}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 138.0, "year": 2019}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 11.0, "year": 2019}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2019}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 52.0, "year": 2019}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2019}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 21.0, "year": 2019}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 54.0, "year": 2019}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 1.0, "year": 2019}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 2.0, "year": 2019}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2019}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 15.0, "year": 2019}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2019}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2019}, {"source": "9", "target": "44", "source_name": "loop quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2019}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2019}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2019}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 12.0, "year": 2019}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2019}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 11.0, "year": 2019}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 14.0, "year": 2019}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 3.0, "year": 2019}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 45.0, "year": 2019}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2019}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2019}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2019}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2019}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2019}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 10.0, "year": 2019}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2019}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 7.0, "year": 2019}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2019}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2019}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2019}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2019}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2019}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2019}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2019}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2019}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2019}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 5.0, "year": 2019}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2019}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2019}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2019}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 13.0, "year": 2019}, {"source": "12", "target": "19", "source_name": "quantum mechanics", "target_name": "path integral", "weight": 1.0, "year": 2019}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 18.0, "year": 2019}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2019}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2019}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 56.0, "year": 2019}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 10.0, "year": 2019}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 2.0, "year": 2019}, {"source": "12", "target": "26", "source_name": "quantum mechanics", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2019}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 2.0, "year": 2019}, {"source": "12", "target": "29", "source_name": "quantum mechanics", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2019}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2019}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 5.0, "year": 2019}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 10.0, "year": 2019}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2019}, {"source": "12", "target": "37", "source_name": "quantum mechanics", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 8.0, "year": 2019}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 8.0, "year": 2019}, {"source": "12", "target": "44", "source_name": "quantum mechanics", "target_name": "bianchi ix", "weight": 1.0, "year": 2019}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2019}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 5.0, "year": 2019}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 3.0, "year": 2019}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2019}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2019}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 6.0, "year": 2019}, {"source": "12", "target": "68", "source_name": "quantum mechanics", "target_name": "effective field theory", "weight": 1.0, "year": 2019}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2019}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2019}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 7.0, "year": 2019}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 21.0, "year": 2019}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2019}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 3.0, "year": 2019}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2019}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "13", "target": "37", "source_name": "cosmological principle", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 2.0, "year": 2019}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2019}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2019}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2019}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 1.0, "year": 2019}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2019}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 11.0, "year": 2019}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2019}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2019}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 3.0, "year": 2019}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2019}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 2.0, "year": 2019}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2019}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2019}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 4.0, "year": 2019}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2019}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2019}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 35.0, "year": 2019}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2019}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2019}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2019}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2019}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2019}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 4.0, "year": 2019}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2019}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 6.0, "year": 2019}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2019}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 2.0, "year": 2019}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2019}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2019}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 6.0, "year": 2019}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2019}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2019}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 32.0, "year": 2019}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 7.0, "year": 2019}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 27.0, "year": 2019}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 157.0, "year": 2019}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 13.0, "year": 2019}, {"source": "16", "target": "25", "source_name": "quantum cosmology", "target_name": "quantum field theory", "weight": 1.0, "year": 2019}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2019}, {"source": "16", "target": "27", "source_name": "quantum cosmology", "target_name": "negative pressure", "weight": 1.0, "year": 2019}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 39.0, "year": 2019}, {"source": "16", "target": "29", "source_name": "quantum cosmology", "target_name": "cosmic rays", "weight": 1.0, "year": 2019}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 6.0, "year": 2019}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 24.0, "year": 2019}, {"source": "16", "target": "32", "source_name": "quantum cosmology", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 53.0, "year": 2019}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 8.0, "year": 2019}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 3.0, "year": 2019}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2019}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 24.0, "year": 2019}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 7.0, "year": 2019}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2019}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 6.0, "year": 2019}, {"source": "16", "target": "44", "source_name": "quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2019}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2019}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "16", "target": "49", "source_name": "quantum cosmology", "target_name": "fred hoyle", "weight": 1.0, "year": 2019}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2019}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 8.0, "year": 2019}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2019}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 13.0, "year": 2019}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 13.0, "year": 2019}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2019}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 60.0, "year": 2019}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 26.0, "year": 2019}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2019}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 7.0, "year": 2019}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 15.0, "year": 2019}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2019}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 4.0, "year": 2019}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2019}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2019}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2019}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2019}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2019}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2019}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 20.0, "year": 2019}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2019}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 16.0, "year": 2019}, {"source": "18", "target": "33", "source_name": "cold dark matter", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2019}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2019}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2019}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2019}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 6.0, "year": 2019}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "18", "target": "69", "source_name": "cold dark matter", "target_name": "planck length", "weight": 1.0, "year": 2019}, {"source": "19", "target": "20", "source_name": "path integral", "target_name": "general relativity", "weight": 1.0, "year": 2019}, {"source": "19", "target": "21", "source_name": "path integral", "target_name": "phase space", "weight": 1.0, "year": 2019}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2019}, {"source": "19", "target": "23", "source_name": "path integral", "target_name": "big bang", "weight": 1.0, "year": 2019}, {"source": "19", "target": "28", "source_name": "path integral", "target_name": "big bounce", "weight": 1.0, "year": 2019}, {"source": "19", "target": "32", "source_name": "path integral", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 7.0, "year": 2019}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2019}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 4.0, "year": 2019}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "19", "target": "56", "source_name": "path integral", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 2.0, "year": 2019}, {"source": "19", "target": "68", "source_name": "path integral", "target_name": "effective field theory", "weight": 1.0, "year": 2019}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2019}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 21.0, "year": 2019}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 185.0, "year": 2019}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 13.0, "year": 2019}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 13.0, "year": 2019}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 5.0, "year": 2019}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2019}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 13.0, "year": 2019}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 2.0, "year": 2019}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 24.0, "year": 2019}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 21.0, "year": 2019}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 13.0, "year": 2019}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 47.0, "year": 2019}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2019}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 9.0, "year": 2019}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 8.0, "year": 2019}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 9.0, "year": 2019}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 21.0, "year": 2019}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 25.0, "year": 2019}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2019}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "20", "target": "44", "source_name": "general relativity", "target_name": "bianchi ix", "weight": 2.0, "year": 2019}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2019}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2019}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 20.0, "year": 2019}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2019}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 13.0, "year": 2019}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2019}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 23.0, "year": 2019}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 10.0, "year": 2019}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 11.0, "year": 2019}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 14.0, "year": 2019}, {"source": "20", "target": "65", "source_name": "general relativity", "target_name": "detailed balance", "weight": 2.0, "year": 2019}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 3.0, "year": 2019}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 3.0, "year": 2019}, {"source": "21", "target": "22", "source_name": "phase space", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2019}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 12.0, "year": 2019}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 4.0, "year": 2019}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2019}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 5.0, "year": 2019}, {"source": "21", "target": "33", "source_name": "phase space", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2019}, {"source": "21", "target": "60", "source_name": "phase space", "target_name": "initial condition", "weight": 2.0, "year": 2019}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 5.0, "year": 2019}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2019}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 50.0, "year": 2019}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 6.0, "year": 2019}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2019}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2019}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 19.0, "year": 2019}, {"source": "22", "target": "29", "source_name": "loop quantum gravity", "target_name": "cosmic rays", "weight": 1.0, "year": 2019}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2019}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 9.0, "year": 2019}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 47.0, "year": 2019}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 8.0, "year": 2019}, {"source": "22", "target": "38", "source_name": "loop quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2019}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2019}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 8.0, "year": 2019}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2019}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2019}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2019}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 7.0, "year": 2019}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2019}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2019}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 11.0, "year": 2019}, {"source": "22", "target": "66", "source_name": "loop quantum gravity", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "22", "target": "70", "source_name": "loop quantum gravity", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 150.0, "year": 2019}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 30.0, "year": 2019}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 52.0, "year": 2019}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 13.0, "year": 2019}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 71.0, "year": 2019}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 13.0, "year": 2019}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 164.0, "year": 2019}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 97.0, "year": 2019}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 52.0, "year": 2019}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 151.0, "year": 2019}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2019}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 76.0, "year": 2019}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 6.0, "year": 2019}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 10.0, "year": 2019}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 55.0, "year": 2019}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 51.0, "year": 2019}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 50.0, "year": 2019}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 103.0, "year": 2019}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 15.0, "year": 2019}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 15.0, "year": 2019}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 8.0, "year": 2019}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 28.0, "year": 2019}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 7.0, "year": 2019}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 21.0, "year": 2019}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 169.0, "year": 2019}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 10.0, "year": 2019}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 22.0, "year": 2019}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 19.0, "year": 2019}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 144.0, "year": 2019}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 19.0, "year": 2019}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 30.0, "year": 2019}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 27.0, "year": 2019}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 109.0, "year": 2019}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 45.0, "year": 2019}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 14.0, "year": 2019}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2019}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 66.0, "year": 2019}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 16.0, "year": 2019}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2019}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 132.0, "year": 2019}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 11.0, "year": 2019}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 4.0, "year": 2019}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 29.0, "year": 2019}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 6.0, "year": 2019}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 7.0, "year": 2019}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 11.0, "year": 2019}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2019}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2019}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2019}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 10.0, "year": 2019}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2019}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 8.0, "year": 2019}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2019}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 6.0, "year": 2019}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 13.0, "year": 2019}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2019}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2019}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2019}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 17.0, "year": 2019}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 3.0, "year": 2019}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2019}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 32.0, "year": 2019}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 11.0, "year": 2019}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2019}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 6.0, "year": 2019}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 23.0, "year": 2019}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 10.0, "year": 2019}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2019}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2019}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 2.0, "year": 2019}, {"source": "25", "target": "40", "source_name": "quantum field theory", "target_name": "quantum theory", "weight": 5.0, "year": 2019}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 4.0, "year": 2019}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2019}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2019}, {"source": "25", "target": "48", "source_name": "quantum field theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2019}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2019}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2019}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 7.0, "year": 2019}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 3.0, "year": 2019}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 6.0, "year": 2019}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2019}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 4.0, "year": 2019}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 3.0, "year": 2019}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2019}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 2.0, "year": 2019}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 2.0, "year": 2019}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2019}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2019}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2019}, {"source": "26", "target": "40", "source_name": "cosmic microwave background radiation", "target_name": "quantum theory", "weight": 2.0, "year": 2019}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2019}, {"source": "26", "target": "49", "source_name": "cosmic microwave background radiation", "target_name": "fred hoyle", "weight": 1.0, "year": 2019}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 44.0, "year": 2019}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2019}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2019}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 4.0, "year": 2019}, {"source": "26", "target": "58", "source_name": "cosmic microwave background radiation", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2019}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2019}, {"source": "27", "target": "30", "source_name": "negative pressure", "target_name": "dark matter", "weight": 2.0, "year": 2019}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 2.0, "year": 2019}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2019}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2019}, {"source": "27", "target": "39", "source_name": "negative pressure", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "27", "target": "40", "source_name": "negative pressure", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "27", "target": "41", "source_name": "negative pressure", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 2.0, "year": 2019}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2019}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "28", "target": "29", "source_name": "big bounce", "target_name": "cosmic rays", "weight": 1.0, "year": 2019}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2019}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2019}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 20.0, "year": 2019}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 3.0, "year": 2019}, {"source": "28", "target": "37", "source_name": "big bounce", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 4.0, "year": 2019}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2019}, {"source": "28", "target": "41", "source_name": "big bounce", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 6.0, "year": 2019}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 8.0, "year": 2019}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 8.0, "year": 2019}, {"source": "28", "target": "61", "source_name": "big bounce", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2019}, {"source": "28", "target": "70", "source_name": "big bounce", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2019}, {"source": "29", "target": "33", "source_name": "cosmic rays", "target_name": "quantum gravity", "weight": 1.0, "year": 2019}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2019}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 7.0, "year": 2019}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2019}, {"source": "29", "target": "40", "source_name": "cosmic rays", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 2.0, "year": 2019}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2019}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2019}, {"source": "29", "target": "53", "source_name": "cosmic rays", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2019}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "29", "target": "70", "source_name": "cosmic rays", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 12.0, "year": 2019}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 6.0, "year": 2019}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 10.0, "year": 2019}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 3.0, "year": 2019}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 5.0, "year": 2019}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 17.0, "year": 2019}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 5.0, "year": 2019}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 7.0, "year": 2019}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 19.0, "year": 2019}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 3.0, "year": 2019}, {"source": "30", "target": "43", "source_name": "dark matter", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2019}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 3.0, "year": 2019}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 7.0, "year": 2019}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 51.0, "year": 2019}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 4.0, "year": 2019}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 11.0, "year": 2019}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 9.0, "year": 2019}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 24.0, "year": 2019}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2019}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 7.0, "year": 2019}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 21.0, "year": 2019}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 6.0, "year": 2019}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 7.0, "year": 2019}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2019}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2019}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 9.0, "year": 2019}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 7.0, "year": 2019}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 3.0, "year": 2019}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 4.0, "year": 2019}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 16.0, "year": 2019}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2019}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2019}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2019}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 4.0, "year": 2019}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 3.0, "year": 2019}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2019}, {"source": "31", "target": "41", "source_name": "energy density", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2019}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2019}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 7.0, "year": 2019}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 19.0, "year": 2019}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2019}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2019}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2019}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 8.0, "year": 2019}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2019}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 3.0, "year": 2019}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 11.0, "year": 2019}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 4.0, "year": 2019}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 20.0, "year": 2019}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2019}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 3.0, "year": 2019}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 23.0, "year": 2019}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2019}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 10.0, "year": 2019}, {"source": "32", "target": "37", "source_name": "field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "32", "target": "38", "source_name": "field theory", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "32", "target": "40", "source_name": "field theory", "target_name": "quantum theory", "weight": 6.0, "year": 2019}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 7.0, "year": 2019}, {"source": "32", "target": "43", "source_name": "field theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2019}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2019}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2019}, {"source": "32", "target": "48", "source_name": "field theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2019}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 11.0, "year": 2019}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 5.0, "year": 2019}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 10.0, "year": 2019}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 7.0, "year": 2019}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2019}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 19.0, "year": 2019}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2019}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 2.0, "year": 2019}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 7.0, "year": 2019}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2019}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 20.0, "year": 2019}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 23.0, "year": 2019}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 3.0, "year": 2019}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 7.0, "year": 2019}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 3.0, "year": 2019}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2019}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2019}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2019}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2019}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2019}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2019}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2019}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 10.0, "year": 2019}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 4.0, "year": 2019}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 10.0, "year": 2019}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 5.0, "year": 2019}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 7.0, "year": 2019}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2019}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 18.0, "year": 2019}, {"source": "33", "target": "65", "source_name": "quantum gravity", "target_name": "detailed balance", "weight": 2.0, "year": 2019}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 3.0, "year": 2019}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 6.0, "year": 2019}, {"source": "33", "target": "69", "source_name": "quantum gravity", "target_name": "planck length", "weight": 1.0, "year": 2019}, {"source": "33", "target": "70", "source_name": "quantum gravity", "target_name": "white hole", "weight": 2.0, "year": 2019}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2019}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2019}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2019}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 2.0, "year": 2019}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 5.0, "year": 2019}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2019}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2019}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2019}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2019}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 9.0, "year": 2019}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2019}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 5.0, "year": 2019}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2019}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 10.0, "year": 2019}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2019}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2019}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2019}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2019}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2019}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2019}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 2.0, "year": 2019}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 4.0, "year": 2019}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2019}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2019}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 2.0, "year": 2019}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2019}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 2.0, "year": 2019}, {"source": "38", "target": "41", "source_name": "particle physics", "target_name": "black hole", "weight": 1.0, "year": 2019}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2019}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 27.0, "year": 2019}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 15.0, "year": 2019}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 3.0, "year": 2019}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 31.0, "year": 2019}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2019}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "38", "target": "70", "source_name": "particle physics", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 2.0, "year": 2019}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 8.0, "year": 2019}, {"source": "39", "target": "43", "source_name": "gravitational wave", "target_name": "friedmann equations", "weight": 1.0, "year": 2019}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 5.0, "year": 2019}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2019}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2019}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2019}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 3.0, "year": 2019}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2019}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2019}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 2.0, "year": 2019}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 11.0, "year": 2019}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2019}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2019}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2019}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 7.0, "year": 2019}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 5.0, "year": 2019}, {"source": "40", "target": "60", "source_name": "quantum theory", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2019}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 11.0, "year": 2019}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2019}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2019}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 3.0, "year": 2019}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2019}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2019}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2019}, {"source": "41", "target": "51", "source_name": "black hole", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2019}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 3.0, "year": 2019}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2019}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 6.0, "year": 2019}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2019}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2019}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 4.0, "year": 2019}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 3.0, "year": 2019}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2019}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2019}, {"source": "41", "target": "68", "source_name": "black hole", "target_name": "effective field theory", "weight": 1.0, "year": 2019}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2019}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 8.0, "year": 2019}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2019}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2019}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2019}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 3.0, "year": 2019}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 3.0, "year": 2019}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2019}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2019}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2019}, {"source": "44", "target": "60", "source_name": "bianchi ix", "target_name": "initial condition", "weight": 1.0, "year": 2019}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 3.0, "year": 2019}, {"source": "44", "target": "66", "source_name": "bianchi ix", "target_name": "wave function", "weight": 1.0, "year": 2019}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2019}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2019}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "45", "target": "57", "source_name": "vacuum energy", "target_name": "big rip", "weight": 3.0, "year": 2019}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 7.0, "year": 2019}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "46", "target": "51", "source_name": "renormalization group", "target_name": "hubble constant", "weight": 1.0, "year": 2019}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2019}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2019}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2019}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2019}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2019}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 6.0, "year": 2019}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2019}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 58.0, "year": 2019}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2019}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 24.0, "year": 2019}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 12.0, "year": 2019}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 3.0, "year": 2019}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2019}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 9.0, "year": 2019}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 5.0, "year": 2019}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2019}, {"source": "49", "target": "52", "source_name": "fred hoyle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2019}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2019}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 2.0, "year": 2019}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2019}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2019}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2019}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2019}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2019}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2019}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2019}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2019}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2019}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 20.0, "year": 2019}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 3.0, "year": 2019}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 5.0, "year": 2019}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2019}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2019}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 10.0, "year": 2019}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2019}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2019}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2019}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 3.0, "year": 2019}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 4.0, "year": 2019}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2019}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2019}, {"source": "54", "target": "70", "source_name": "planck scale", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2019}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 2.0, "year": 2019}, {"source": "55", "target": "63", "source_name": "cosmic inflation", "target_name": "scalar field", "weight": 1.0, "year": 2019}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 3.0, "year": 2019}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2019}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 2.0, "year": 2019}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2019}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 4.0, "year": 2019}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2019}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 4.0, "year": 2019}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2019}, {"source": "56", "target": "68", "source_name": "standard model", "target_name": "effective field theory", "weight": 1.0, "year": 2019}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2019}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 5.0, "year": 2019}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 5.0, "year": 2019}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2019}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 13.0, "year": 2019}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2019}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 4.0, "year": 2019}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 4.0, "year": 2019}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 1.0, "year": 2019}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2019}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2019}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 12.0, "year": 2019}, {"source": "63", "target": "68", "source_name": "scalar field", "target_name": "effective field theory", "weight": 1.0, "year": 2019}]}, {"2020": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2020}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2020}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2020}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2020}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2020}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2020}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2020}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2020}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2020}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2020}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2020}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2020}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 7.0, "year": 2020}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 13.0, "year": 2020}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2020}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2020}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2020}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 3.0, "year": 2020}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 5.0, "year": 2020}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2020}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2020}, {"source": "1", "target": "16", "source_name": "big bang theory", "target_name": "quantum cosmology", "weight": 1.0, "year": 2020}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2020}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2020}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 8.0, "year": 2020}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2020}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 64.0, "year": 2020}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 2.0, "year": 2020}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2020}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2020}, {"source": "1", "target": "29", "source_name": "big bang theory", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 10.0, "year": 2020}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2020}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2020}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2020}, {"source": "1", "target": "37", "source_name": "big bang theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2020}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2020}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 3.0, "year": 2020}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 6.0, "year": 2020}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2020}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2020}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2020}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 4.0, "year": 2020}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2020}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 4.0, "year": 2020}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2020}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2020}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2020}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 48.0, "year": 2020}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 3.0, "year": 2020}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 16.0, "year": 2020}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2020}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2020}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 9.0, "year": 2020}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2020}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2020}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 7.0, "year": 2020}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 6.0, "year": 2020}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 6.0, "year": 2020}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2020}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 21.0, "year": 2020}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 9.0, "year": 2020}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 3.0, "year": 2020}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 4.0, "year": 2020}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 29.0, "year": 2020}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 1.0, "year": 2020}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2020}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 165.0, "year": 2020}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 20.0, "year": 2020}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 4.0, "year": 2020}, {"source": "2", "target": "26", "source_name": "cosmological constant", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2020}, {"source": "2", "target": "27", "source_name": "cosmological constant", "target_name": "negative pressure", "weight": 2.0, "year": 2020}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 3.0, "year": 2020}, {"source": "2", "target": "29", "source_name": "cosmological constant", "target_name": "cosmic rays", "weight": 1.0, "year": 2020}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 37.0, "year": 2020}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 29.0, "year": 2020}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 11.0, "year": 2020}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 19.0, "year": 2020}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 8.0, "year": 2020}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 5.0, "year": 2020}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 2.0, "year": 2020}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 3.0, "year": 2020}, {"source": "2", "target": "39", "source_name": "cosmological constant", "target_name": "gravitational wave", "weight": 2.0, "year": 2020}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 9.0, "year": 2020}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 12.0, "year": 2020}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 2.0, "year": 2020}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 3.0, "year": 2020}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 1.0, "year": 2020}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 18.0, "year": 2020}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 4.0, "year": 2020}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 12.0, "year": 2020}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 4.0, "year": 2020}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2020}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 7.0, "year": 2020}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 14.0, "year": 2020}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 7.0, "year": 2020}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 15.0, "year": 2020}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 2.0, "year": 2020}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 26.0, "year": 2020}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2020}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 6.0, "year": 2020}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2020}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 3.0, "year": 2020}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 6.0, "year": 2020}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 18.0, "year": 2020}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2020}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 5.0, "year": 2020}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2020}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 6.0, "year": 2020}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 7.0, "year": 2020}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2020}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2020}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 17.0, "year": 2020}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2020}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2020}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 40.0, "year": 2020}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2020}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2020}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 178.0, "year": 2020}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 8.0, "year": 2020}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 6.0, "year": 2020}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2020}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 4.0, "year": 2020}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 4.0, "year": 2020}, {"source": "3", "target": "29", "source_name": "dark energy", "target_name": "cosmic rays", "weight": 1.0, "year": 2020}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 106.0, "year": 2020}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 34.0, "year": 2020}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 5.0, "year": 2020}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 18.0, "year": 2020}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2020}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 16.0, "year": 2020}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "3", "target": "37", "source_name": "dark energy", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 9.0, "year": 2020}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 7.0, "year": 2020}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 8.0, "year": 2020}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 20.0, "year": 2020}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2020}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 3.0, "year": 2020}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 6.0, "year": 2020}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 5.0, "year": 2020}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 18.0, "year": 2020}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 4.0, "year": 2020}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 6.0, "year": 2020}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 31.0, "year": 2020}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 5.0, "year": 2020}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2020}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 5.0, "year": 2020}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 14.0, "year": 2020}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 12.0, "year": 2020}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 7.0, "year": 2020}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2020}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2020}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 25.0, "year": 2020}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 2.0, "year": 2020}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2020}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2020}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 2.0, "year": 2020}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2020}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2020}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2020}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 27.0, "year": 2020}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2020}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2020}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2020}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 7.0, "year": 2020}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2020}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 3.0, "year": 2020}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2020}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2020}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 2.0, "year": 2020}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 2.0, "year": 2020}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2020}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 9.0, "year": 2020}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2020}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2020}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 17.0, "year": 2020}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2020}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2020}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 3.0, "year": 2020}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2020}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 27.0, "year": 2020}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 3.0, "year": 2020}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2020}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 16.0, "year": 2020}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 2.0, "year": 2020}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2020}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 90.0, "year": 2020}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 13.0, "year": 2020}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2020}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 8.0, "year": 2020}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 9.0, "year": 2020}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 19.0, "year": 2020}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 9.0, "year": 2020}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 9.0, "year": 2020}, {"source": "5", "target": "38", "source_name": "scale factor", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2020}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 6.0, "year": 2020}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2020}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2020}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2020}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2020}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2020}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2020}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 11.0, "year": 2020}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 11.0, "year": 2020}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 27.0, "year": 2020}, {"source": "5", "target": "65", "source_name": "scale factor", "target_name": "detailed balance", "weight": 2.0, "year": 2020}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 13.0, "year": 2020}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2020}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2020}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2020}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 2.0, "year": 2020}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 17.0, "year": 2020}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2020}, {"source": "6", "target": "25", "source_name": "brane cosmology", "target_name": "quantum field theory", "weight": 1.0, "year": 2020}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2020}, {"source": "6", "target": "32", "source_name": "brane cosmology", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "6", "target": "33", "source_name": "brane cosmology", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2020}, {"source": "6", "target": "40", "source_name": "brane cosmology", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2020}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2020}, {"source": "6", "target": "56", "source_name": "brane cosmology", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2020}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2020}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2020}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 8.0, "year": 2020}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2020}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2020}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 2.0, "year": 2020}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2020}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2020}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2020}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 8.0, "year": 2020}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2020}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "8", "target": "33", "source_name": "power law", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "8", "target": "42", "source_name": "power law", "target_name": "planck mass", "weight": 1.0, "year": 2020}, {"source": "8", "target": "48", "source_name": "power law", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2020}, {"source": "8", "target": "56", "source_name": "power law", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2020}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "8", "target": "70", "source_name": "power law", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2020}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2020}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 3.0, "year": 2020}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 137.0, "year": 2020}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2020}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 32.0, "year": 2020}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 6.0, "year": 2020}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 37.0, "year": 2020}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 147.0, "year": 2020}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 12.0, "year": 2020}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2020}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 56.0, "year": 2020}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2020}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 25.0, "year": 2020}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 56.0, "year": 2020}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 3.0, "year": 2020}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 2.0, "year": 2020}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2020}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 15.0, "year": 2020}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2020}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2020}, {"source": "9", "target": "44", "source_name": "loop quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2020}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2020}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2020}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 12.0, "year": 2020}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2020}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 11.0, "year": 2020}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 16.0, "year": 2020}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 4.0, "year": 2020}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 46.0, "year": 2020}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2020}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2020}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2020}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2020}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2020}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 13.0, "year": 2020}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2020}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 10.0, "year": 2020}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2020}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2020}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2020}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2020}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2020}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2020}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2020}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2020}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2020}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 5.0, "year": 2020}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2020}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2020}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2020}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2020}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 13.0, "year": 2020}, {"source": "12", "target": "19", "source_name": "quantum mechanics", "target_name": "path integral", "weight": 1.0, "year": 2020}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 19.0, "year": 2020}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2020}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2020}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 61.0, "year": 2020}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 11.0, "year": 2020}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 2.0, "year": 2020}, {"source": "12", "target": "26", "source_name": "quantum mechanics", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2020}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 2.0, "year": 2020}, {"source": "12", "target": "29", "source_name": "quantum mechanics", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2020}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2020}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 5.0, "year": 2020}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 10.0, "year": 2020}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2020}, {"source": "12", "target": "37", "source_name": "quantum mechanics", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 8.0, "year": 2020}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 8.0, "year": 2020}, {"source": "12", "target": "44", "source_name": "quantum mechanics", "target_name": "bianchi ix", "weight": 1.0, "year": 2020}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "12", "target": "51", "source_name": "quantum mechanics", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2020}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 6.0, "year": 2020}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 3.0, "year": 2020}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2020}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2020}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 6.0, "year": 2020}, {"source": "12", "target": "68", "source_name": "quantum mechanics", "target_name": "effective field theory", "weight": 1.0, "year": 2020}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2020}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2020}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 7.0, "year": 2020}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 21.0, "year": 2020}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2020}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 3.0, "year": 2020}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2020}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "13", "target": "37", "source_name": "cosmological principle", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2020}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 2.0, "year": 2020}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2020}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2020}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2020}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 1.0, "year": 2020}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2020}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 12.0, "year": 2020}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2020}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2020}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 3.0, "year": 2020}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2020}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 2.0, "year": 2020}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2020}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2020}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 4.0, "year": 2020}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2020}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2020}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 36.0, "year": 2020}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2020}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2020}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2020}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2020}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2020}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 4.0, "year": 2020}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2020}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 7.0, "year": 2020}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2020}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 3.0, "year": 2020}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2020}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2020}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 6.0, "year": 2020}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2020}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 2.0, "year": 2020}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 32.0, "year": 2020}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 8.0, "year": 2020}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 27.0, "year": 2020}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 162.0, "year": 2020}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 14.0, "year": 2020}, {"source": "16", "target": "25", "source_name": "quantum cosmology", "target_name": "quantum field theory", "weight": 1.0, "year": 2020}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2020}, {"source": "16", "target": "27", "source_name": "quantum cosmology", "target_name": "negative pressure", "weight": 1.0, "year": 2020}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 40.0, "year": 2020}, {"source": "16", "target": "29", "source_name": "quantum cosmology", "target_name": "cosmic rays", "weight": 1.0, "year": 2020}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 6.0, "year": 2020}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 25.0, "year": 2020}, {"source": "16", "target": "32", "source_name": "quantum cosmology", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 55.0, "year": 2020}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 8.0, "year": 2020}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 3.0, "year": 2020}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 2.0, "year": 2020}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2020}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 24.0, "year": 2020}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 8.0, "year": 2020}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2020}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 6.0, "year": 2020}, {"source": "16", "target": "44", "source_name": "quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2020}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 3.0, "year": 2020}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "16", "target": "49", "source_name": "quantum cosmology", "target_name": "fred hoyle", "weight": 1.0, "year": 2020}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2020}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 8.0, "year": 2020}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2020}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 13.0, "year": 2020}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 14.0, "year": 2020}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 7.0, "year": 2020}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 60.0, "year": 2020}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 26.0, "year": 2020}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2020}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 7.0, "year": 2020}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 15.0, "year": 2020}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2020}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 4.0, "year": 2020}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2020}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2020}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2020}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2020}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2020}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2020}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 21.0, "year": 2020}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2020}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 17.0, "year": 2020}, {"source": "18", "target": "33", "source_name": "cold dark matter", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2020}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2020}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 3.0, "year": 2020}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2020}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2020}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2020}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 6.0, "year": 2020}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "18", "target": "69", "source_name": "cold dark matter", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "19", "target": "20", "source_name": "path integral", "target_name": "general relativity", "weight": 1.0, "year": 2020}, {"source": "19", "target": "21", "source_name": "path integral", "target_name": "phase space", "weight": 1.0, "year": 2020}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2020}, {"source": "19", "target": "23", "source_name": "path integral", "target_name": "big bang", "weight": 2.0, "year": 2020}, {"source": "19", "target": "28", "source_name": "path integral", "target_name": "big bounce", "weight": 1.0, "year": 2020}, {"source": "19", "target": "32", "source_name": "path integral", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 7.0, "year": 2020}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2020}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 5.0, "year": 2020}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "19", "target": "56", "source_name": "path integral", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "19", "target": "68", "source_name": "path integral", "target_name": "effective field theory", "weight": 1.0, "year": 2020}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2020}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 21.0, "year": 2020}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 193.0, "year": 2020}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 13.0, "year": 2020}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 13.0, "year": 2020}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2020}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2020}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 13.0, "year": 2020}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 2.0, "year": 2020}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 25.0, "year": 2020}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 21.0, "year": 2020}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 13.0, "year": 2020}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 47.0, "year": 2020}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2020}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 10.0, "year": 2020}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 9.0, "year": 2020}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 12.0, "year": 2020}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 21.0, "year": 2020}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 25.0, "year": 2020}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2020}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "20", "target": "44", "source_name": "general relativity", "target_name": "bianchi ix", "weight": 2.0, "year": 2020}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2020}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2020}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "20", "target": "51", "source_name": "general relativity", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 21.0, "year": 2020}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2020}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 13.0, "year": 2020}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2020}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 24.0, "year": 2020}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 10.0, "year": 2020}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 11.0, "year": 2020}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 14.0, "year": 2020}, {"source": "20", "target": "65", "source_name": "general relativity", "target_name": "detailed balance", "weight": 2.0, "year": 2020}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 3.0, "year": 2020}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 3.0, "year": 2020}, {"source": "21", "target": "22", "source_name": "phase space", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2020}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 13.0, "year": 2020}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 4.0, "year": 2020}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2020}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 6.0, "year": 2020}, {"source": "21", "target": "33", "source_name": "phase space", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2020}, {"source": "21", "target": "60", "source_name": "phase space", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 5.0, "year": 2020}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2020}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 51.0, "year": 2020}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 6.0, "year": 2020}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2020}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2020}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 19.0, "year": 2020}, {"source": "22", "target": "29", "source_name": "loop quantum gravity", "target_name": "cosmic rays", "weight": 1.0, "year": 2020}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2020}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 10.0, "year": 2020}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 47.0, "year": 2020}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 9.0, "year": 2020}, {"source": "22", "target": "38", "source_name": "loop quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2020}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2020}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 8.0, "year": 2020}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2020}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2020}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2020}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 7.0, "year": 2020}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2020}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2020}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 12.0, "year": 2020}, {"source": "22", "target": "66", "source_name": "loop quantum gravity", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "22", "target": "70", "source_name": "loop quantum gravity", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 155.0, "year": 2020}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 32.0, "year": 2020}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 56.0, "year": 2020}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 13.0, "year": 2020}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 74.0, "year": 2020}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 13.0, "year": 2020}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 174.0, "year": 2020}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 106.0, "year": 2020}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 58.0, "year": 2020}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 157.0, "year": 2020}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2020}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 81.0, "year": 2020}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 6.0, "year": 2020}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 10.0, "year": 2020}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 57.0, "year": 2020}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 61.0, "year": 2020}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 50.0, "year": 2020}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 108.0, "year": 2020}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 16.0, "year": 2020}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 17.0, "year": 2020}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 8.0, "year": 2020}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 30.0, "year": 2020}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 7.0, "year": 2020}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 22.0, "year": 2020}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 183.0, "year": 2020}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 10.0, "year": 2020}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 22.0, "year": 2020}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 21.0, "year": 2020}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 152.0, "year": 2020}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 19.0, "year": 2020}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 32.0, "year": 2020}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 27.0, "year": 2020}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 119.0, "year": 2020}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 46.0, "year": 2020}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 14.0, "year": 2020}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2020}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 72.0, "year": 2020}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 17.0, "year": 2020}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2020}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 140.0, "year": 2020}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 11.0, "year": 2020}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 4.0, "year": 2020}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 29.0, "year": 2020}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 10.0, "year": 2020}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 12.0, "year": 2020}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 11.0, "year": 2020}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2020}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2020}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 1.0, "year": 2020}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 10.0, "year": 2020}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2020}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 9.0, "year": 2020}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2020}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2020}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2020}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 6.0, "year": 2020}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 13.0, "year": 2020}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2020}, {"source": "24", "target": "45", "source_name": "big crunch", "target_name": "vacuum energy", "weight": 2.0, "year": 2020}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2020}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2020}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2020}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 17.0, "year": 2020}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2020}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 32.0, "year": 2020}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 11.0, "year": 2020}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2020}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 6.0, "year": 2020}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 25.0, "year": 2020}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 10.0, "year": 2020}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2020}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2020}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 2.0, "year": 2020}, {"source": "25", "target": "40", "source_name": "quantum field theory", "target_name": "quantum theory", "weight": 5.0, "year": 2020}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 4.0, "year": 2020}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2020}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2020}, {"source": "25", "target": "48", "source_name": "quantum field theory", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2020}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2020}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2020}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 7.0, "year": 2020}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 7.0, "year": 2020}, {"source": "25", "target": "69", "source_name": "quantum field theory", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2020}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 4.0, "year": 2020}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 3.0, "year": 2020}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2020}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 3.0, "year": 2020}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 3.0, "year": 2020}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2020}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2020}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2020}, {"source": "26", "target": "40", "source_name": "cosmic microwave background radiation", "target_name": "quantum theory", "weight": 2.0, "year": 2020}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2020}, {"source": "26", "target": "49", "source_name": "cosmic microwave background radiation", "target_name": "fred hoyle", "weight": 1.0, "year": 2020}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 44.0, "year": 2020}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2020}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2020}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 4.0, "year": 2020}, {"source": "26", "target": "58", "source_name": "cosmic microwave background radiation", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2020}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2020}, {"source": "27", "target": "30", "source_name": "negative pressure", "target_name": "dark matter", "weight": 2.0, "year": 2020}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 2.0, "year": 2020}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2020}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2020}, {"source": "27", "target": "39", "source_name": "negative pressure", "target_name": "gravitational wave", "weight": 1.0, "year": 2020}, {"source": "27", "target": "40", "source_name": "negative pressure", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "27", "target": "41", "source_name": "negative pressure", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 2.0, "year": 2020}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2020}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "28", "target": "29", "source_name": "big bounce", "target_name": "cosmic rays", "weight": 1.0, "year": 2020}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2020}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2020}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 21.0, "year": 2020}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 4.0, "year": 2020}, {"source": "28", "target": "37", "source_name": "big bounce", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 2.0, "year": 2020}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 5.0, "year": 2020}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2020}, {"source": "28", "target": "41", "source_name": "big bounce", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 6.0, "year": 2020}, {"source": "28", "target": "56", "source_name": "big bounce", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 8.0, "year": 2020}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 9.0, "year": 2020}, {"source": "28", "target": "61", "source_name": "big bounce", "target_name": "quantum state", "weight": 2.0, "year": 2020}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2020}, {"source": "28", "target": "70", "source_name": "big bounce", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2020}, {"source": "29", "target": "33", "source_name": "cosmic rays", "target_name": "quantum gravity", "weight": 1.0, "year": 2020}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2020}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 7.0, "year": 2020}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2020}, {"source": "29", "target": "40", "source_name": "cosmic rays", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 2.0, "year": 2020}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2020}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2020}, {"source": "29", "target": "53", "source_name": "cosmic rays", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2020}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "29", "target": "70", "source_name": "cosmic rays", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 12.0, "year": 2020}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 6.0, "year": 2020}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 10.0, "year": 2020}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 4.0, "year": 2020}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 5.0, "year": 2020}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 18.0, "year": 2020}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 7.0, "year": 2020}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 8.0, "year": 2020}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 22.0, "year": 2020}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 3.0, "year": 2020}, {"source": "30", "target": "43", "source_name": "dark matter", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2020}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 3.0, "year": 2020}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 7.0, "year": 2020}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 55.0, "year": 2020}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 4.0, "year": 2020}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 11.0, "year": 2020}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 9.0, "year": 2020}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 26.0, "year": 2020}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2020}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 7.0, "year": 2020}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 24.0, "year": 2020}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 6.0, "year": 2020}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 7.0, "year": 2020}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2020}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2020}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 9.0, "year": 2020}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 7.0, "year": 2020}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 3.0, "year": 2020}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 7.0, "year": 2020}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 16.0, "year": 2020}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2020}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2020}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2020}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 4.0, "year": 2020}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 4.0, "year": 2020}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2020}, {"source": "31", "target": "41", "source_name": "energy density", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2020}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2020}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 7.0, "year": 2020}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2020}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2020}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2020}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2020}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 8.0, "year": 2020}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 3.0, "year": 2020}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 4.0, "year": 2020}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 11.0, "year": 2020}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 22.0, "year": 2020}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2020}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 6.0, "year": 2020}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 24.0, "year": 2020}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2020}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 10.0, "year": 2020}, {"source": "32", "target": "37", "source_name": "field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "32", "target": "38", "source_name": "field theory", "target_name": "particle physics", "weight": 2.0, "year": 2020}, {"source": "32", "target": "40", "source_name": "field theory", "target_name": "quantum theory", "weight": 6.0, "year": 2020}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 7.0, "year": 2020}, {"source": "32", "target": "43", "source_name": "field theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2020}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2020}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 2.0, "year": 2020}, {"source": "32", "target": "48", "source_name": "field theory", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2020}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2020}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 11.0, "year": 2020}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 6.0, "year": 2020}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 12.0, "year": 2020}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 10.0, "year": 2020}, {"source": "32", "target": "69", "source_name": "field theory", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2020}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 21.0, "year": 2020}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2020}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 2.0, "year": 2020}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 7.0, "year": 2020}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2020}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 20.0, "year": 2020}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 24.0, "year": 2020}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 3.0, "year": 2020}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 7.0, "year": 2020}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 3.0, "year": 2020}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2020}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2020}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 3.0, "year": 2020}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2020}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2020}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2020}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2020}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 10.0, "year": 2020}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 4.0, "year": 2020}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 11.0, "year": 2020}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 5.0, "year": 2020}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 9.0, "year": 2020}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 3.0, "year": 2020}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 18.0, "year": 2020}, {"source": "33", "target": "65", "source_name": "quantum gravity", "target_name": "detailed balance", "weight": 2.0, "year": 2020}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 3.0, "year": 2020}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 6.0, "year": 2020}, {"source": "33", "target": "69", "source_name": "quantum gravity", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "33", "target": "70", "source_name": "quantum gravity", "target_name": "white hole", "weight": 2.0, "year": 2020}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2020}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2020}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2020}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2020}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 3.0, "year": 2020}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 7.0, "year": 2020}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2020}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2020}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2020}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2020}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2020}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2020}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 7.0, "year": 2020}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2020}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 11.0, "year": 2020}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2020}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2020}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2020}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2020}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2020}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2020}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 2.0, "year": 2020}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 4.0, "year": 2020}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2020}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2020}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 3.0, "year": 2020}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 3.0, "year": 2020}, {"source": "38", "target": "41", "source_name": "particle physics", "target_name": "black hole", "weight": 1.0, "year": 2020}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2020}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 28.0, "year": 2020}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2020}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 3.0, "year": 2020}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 33.0, "year": 2020}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2020}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "38", "target": "70", "source_name": "particle physics", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 2.0, "year": 2020}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 8.0, "year": 2020}, {"source": "39", "target": "43", "source_name": "gravitational wave", "target_name": "friedmann equations", "weight": 1.0, "year": 2020}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 6.0, "year": 2020}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 9.0, "year": 2020}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2020}, {"source": "39", "target": "54", "source_name": "gravitational wave", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2020}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 5.0, "year": 2020}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2020}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2020}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 2.0, "year": 2020}, {"source": "39", "target": "68", "source_name": "gravitational wave", "target_name": "effective field theory", "weight": 1.0, "year": 2020}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 12.0, "year": 2020}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2020}, {"source": "40", "target": "48", "source_name": "quantum theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2020}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2020}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 7.0, "year": 2020}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 5.0, "year": 2020}, {"source": "40", "target": "60", "source_name": "quantum theory", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2020}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 11.0, "year": 2020}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2020}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2020}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 3.0, "year": 2020}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2020}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2020}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2020}, {"source": "41", "target": "51", "source_name": "black hole", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2020}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 3.0, "year": 2020}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 5.0, "year": 2020}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 6.0, "year": 2020}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2020}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2020}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 3.0, "year": 2020}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2020}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2020}, {"source": "41", "target": "68", "source_name": "black hole", "target_name": "effective field theory", "weight": 1.0, "year": 2020}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 2.0, "year": 2020}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 8.0, "year": 2020}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2020}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2020}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2020}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 4.0, "year": 2020}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 3.0, "year": 2020}, {"source": "43", "target": "48", "source_name": "friedmann equations", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2020}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2020}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2020}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2020}, {"source": "43", "target": "69", "source_name": "friedmann equations", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "44", "target": "60", "source_name": "bianchi ix", "target_name": "initial condition", "weight": 1.0, "year": 2020}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 3.0, "year": 2020}, {"source": "44", "target": "66", "source_name": "bianchi ix", "target_name": "wave function", "weight": 1.0, "year": 2020}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2020}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2020}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2020}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "45", "target": "57", "source_name": "vacuum energy", "target_name": "big rip", "weight": 3.0, "year": 2020}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 7.0, "year": 2020}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "46", "target": "51", "source_name": "renormalization group", "target_name": "hubble constant", "weight": 1.0, "year": 2020}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2020}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2020}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2020}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2020}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2020}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 6.0, "year": 2020}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 2.0, "year": 2020}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 62.0, "year": 2020}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2020}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 28.0, "year": 2020}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 12.0, "year": 2020}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 3.0, "year": 2020}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2020}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 10.0, "year": 2020}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 5.0, "year": 2020}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2020}, {"source": "48", "target": "68", "source_name": "big bang nucleosynthesis", "target_name": "effective field theory", "weight": 2.0, "year": 2020}, {"source": "49", "target": "52", "source_name": "fred hoyle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2020}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2020}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 2.0, "year": 2020}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2020}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2020}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2020}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2020}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2020}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2020}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2020}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2020}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2020}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 22.0, "year": 2020}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 3.0, "year": 2020}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 6.0, "year": 2020}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2020}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2020}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 11.0, "year": 2020}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2020}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2020}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 4.0, "year": 2020}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 4.0, "year": 2020}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2020}, {"source": "54", "target": "69", "source_name": "planck scale", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "54", "target": "70", "source_name": "planck scale", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2020}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 2.0, "year": 2020}, {"source": "55", "target": "63", "source_name": "cosmic inflation", "target_name": "scalar field", "weight": 1.0, "year": 2020}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 3.0, "year": 2020}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2020}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 2.0, "year": 2020}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2020}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 4.0, "year": 2020}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2020}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 5.0, "year": 2020}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2020}, {"source": "56", "target": "68", "source_name": "standard model", "target_name": "effective field theory", "weight": 1.0, "year": 2020}, {"source": "56", "target": "69", "source_name": "standard model", "target_name": "planck length", "weight": 1.0, "year": 2020}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2020}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 5.0, "year": 2020}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 5.0, "year": 2020}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2020}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 13.0, "year": 2020}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2020}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 4.0, "year": 2020}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 4.0, "year": 2020}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 2.0, "year": 2020}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 4.0, "year": 2020}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 2.0, "year": 2020}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 12.0, "year": 2020}, {"source": "63", "target": "68", "source_name": "scalar field", "target_name": "effective field theory", "weight": 2.0, "year": 2020}]}, {"2021": [{"source": "0", "target": "2", "source_name": "baryon density", "target_name": "cosmological constant", "weight": 1.0, "year": 2021}, {"source": "0", "target": "18", "source_name": "baryon density", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "0", "target": "23", "source_name": "baryon density", "target_name": "big bang", "weight": 24.0, "year": 2021}, {"source": "0", "target": "26", "source_name": "baryon density", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2021}, {"source": "0", "target": "29", "source_name": "baryon density", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "0", "target": "30", "source_name": "baryon density", "target_name": "dark matter", "weight": 3.0, "year": 2021}, {"source": "0", "target": "31", "source_name": "baryon density", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "0", "target": "35", "source_name": "baryon density", "target_name": "string theory", "weight": 1.0, "year": 2021}, {"source": "0", "target": "38", "source_name": "baryon density", "target_name": "particle physics", "weight": 6.0, "year": 2021}, {"source": "0", "target": "48", "source_name": "baryon density", "target_name": "big bang nucleosynthesis", "weight": 23.0, "year": 2021}, {"source": "0", "target": "52", "source_name": "baryon density", "target_name": "cosmic microwave background", "weight": 12.0, "year": 2021}, {"source": "0", "target": "55", "source_name": "baryon density", "target_name": "cosmic inflation", "weight": 1.0, "year": 2021}, {"source": "0", "target": "56", "source_name": "baryon density", "target_name": "standard model", "weight": 10.0, "year": 2021}, {"source": "0", "target": "60", "source_name": "baryon density", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "0", "target": "62", "source_name": "baryon density", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2021}, {"source": "1", "target": "2", "source_name": "big bang theory", "target_name": "cosmological constant", "weight": 7.0, "year": 2021}, {"source": "1", "target": "3", "source_name": "big bang theory", "target_name": "dark energy", "weight": 13.0, "year": 2021}, {"source": "1", "target": "4", "source_name": "big bang theory", "target_name": "steady state", "weight": 1.0, "year": 2021}, {"source": "1", "target": "5", "source_name": "big bang theory", "target_name": "scale factor", "weight": 2.0, "year": 2021}, {"source": "1", "target": "10", "source_name": "big bang theory", "target_name": "angular momentum", "weight": 2.0, "year": 2021}, {"source": "1", "target": "12", "source_name": "big bang theory", "target_name": "quantum mechanics", "weight": 3.0, "year": 2021}, {"source": "1", "target": "13", "source_name": "big bang theory", "target_name": "cosmological principle", "weight": 5.0, "year": 2021}, {"source": "1", "target": "14", "source_name": "big bang theory", "target_name": "gravitational constant", "weight": 1.0, "year": 2021}, {"source": "1", "target": "15", "source_name": "big bang theory", "target_name": "phase transition", "weight": 1.0, "year": 2021}, {"source": "1", "target": "16", "source_name": "big bang theory", "target_name": "quantum cosmology", "weight": 1.0, "year": 2021}, {"source": "1", "target": "17", "source_name": "big bang theory", "target_name": "einstein equations", "weight": 1.0, "year": 2021}, {"source": "1", "target": "18", "source_name": "big bang theory", "target_name": "cold dark matter", "weight": 2.0, "year": 2021}, {"source": "1", "target": "20", "source_name": "big bang theory", "target_name": "general relativity", "weight": 8.0, "year": 2021}, {"source": "1", "target": "22", "source_name": "big bang theory", "target_name": "loop quantum gravity", "weight": 1.0, "year": 2021}, {"source": "1", "target": "23", "source_name": "big bang theory", "target_name": "big bang", "weight": 64.0, "year": 2021}, {"source": "1", "target": "24", "source_name": "big bang theory", "target_name": "big crunch", "weight": 2.0, "year": 2021}, {"source": "1", "target": "25", "source_name": "big bang theory", "target_name": "quantum field theory", "weight": 1.0, "year": 2021}, {"source": "1", "target": "26", "source_name": "big bang theory", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2021}, {"source": "1", "target": "29", "source_name": "big bang theory", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "1", "target": "30", "source_name": "big bang theory", "target_name": "dark matter", "weight": 10.0, "year": 2021}, {"source": "1", "target": "31", "source_name": "big bang theory", "target_name": "energy density", "weight": 6.0, "year": 2021}, {"source": "1", "target": "33", "source_name": "big bang theory", "target_name": "quantum gravity", "weight": 2.0, "year": 2021}, {"source": "1", "target": "35", "source_name": "big bang theory", "target_name": "string theory", "weight": 1.0, "year": 2021}, {"source": "1", "target": "37", "source_name": "big bang theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "1", "target": "38", "source_name": "big bang theory", "target_name": "particle physics", "weight": 2.0, "year": 2021}, {"source": "1", "target": "39", "source_name": "big bang theory", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "1", "target": "40", "source_name": "big bang theory", "target_name": "quantum theory", "weight": 3.0, "year": 2021}, {"source": "1", "target": "41", "source_name": "big bang theory", "target_name": "black hole", "weight": 6.0, "year": 2021}, {"source": "1", "target": "43", "source_name": "big bang theory", "target_name": "friedmann equations", "weight": 1.0, "year": 2021}, {"source": "1", "target": "48", "source_name": "big bang theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2021}, {"source": "1", "target": "49", "source_name": "big bang theory", "target_name": "fred hoyle", "weight": 1.0, "year": 2021}, {"source": "1", "target": "50", "source_name": "big bang theory", "target_name": "structure formation", "weight": 2.0, "year": 2021}, {"source": "1", "target": "51", "source_name": "big bang theory", "target_name": "hubble constant", "weight": 4.0, "year": 2021}, {"source": "1", "target": "52", "source_name": "big bang theory", "target_name": "cosmic microwave background", "weight": 11.0, "year": 2021}, {"source": "1", "target": "53", "source_name": "big bang theory", "target_name": "gravitational collapse", "weight": 4.0, "year": 2021}, {"source": "1", "target": "55", "source_name": "big bang theory", "target_name": "cosmic inflation", "weight": 4.0, "year": 2021}, {"source": "1", "target": "56", "source_name": "big bang theory", "target_name": "standard model", "weight": 8.0, "year": 2021}, {"source": "1", "target": "60", "source_name": "big bang theory", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "1", "target": "69", "source_name": "big bang theory", "target_name": "planck length", "weight": 3.0, "year": 2021}, {"source": "2", "target": "3", "source_name": "cosmological constant", "target_name": "dark energy", "weight": 51.0, "year": 2021}, {"source": "2", "target": "4", "source_name": "cosmological constant", "target_name": "steady state", "weight": 3.0, "year": 2021}, {"source": "2", "target": "5", "source_name": "cosmological constant", "target_name": "scale factor", "weight": 18.0, "year": 2021}, {"source": "2", "target": "7", "source_name": "cosmological constant", "target_name": "line element", "weight": 2.0, "year": 2021}, {"source": "2", "target": "8", "source_name": "cosmological constant", "target_name": "power law", "weight": 4.0, "year": 2021}, {"source": "2", "target": "9", "source_name": "cosmological constant", "target_name": "loop quantum cosmology", "weight": 11.0, "year": 2021}, {"source": "2", "target": "10", "source_name": "cosmological constant", "target_name": "angular momentum", "weight": 3.0, "year": 2021}, {"source": "2", "target": "11", "source_name": "cosmological constant", "target_name": "hilbert space", "weight": 3.0, "year": 2021}, {"source": "2", "target": "12", "source_name": "cosmological constant", "target_name": "quantum mechanics", "weight": 7.0, "year": 2021}, {"source": "2", "target": "13", "source_name": "cosmological constant", "target_name": "cosmological principle", "weight": 6.0, "year": 2021}, {"source": "2", "target": "14", "source_name": "cosmological constant", "target_name": "gravitational constant", "weight": 7.0, "year": 2021}, {"source": "2", "target": "15", "source_name": "cosmological constant", "target_name": "phase transition", "weight": 5.0, "year": 2021}, {"source": "2", "target": "16", "source_name": "cosmological constant", "target_name": "quantum cosmology", "weight": 25.0, "year": 2021}, {"source": "2", "target": "17", "source_name": "cosmological constant", "target_name": "einstein equations", "weight": 10.0, "year": 2021}, {"source": "2", "target": "18", "source_name": "cosmological constant", "target_name": "cold dark matter", "weight": 4.0, "year": 2021}, {"source": "2", "target": "19", "source_name": "cosmological constant", "target_name": "path integral", "weight": 5.0, "year": 2021}, {"source": "2", "target": "20", "source_name": "cosmological constant", "target_name": "general relativity", "weight": 29.0, "year": 2021}, {"source": "2", "target": "21", "source_name": "cosmological constant", "target_name": "phase space", "weight": 2.0, "year": 2021}, {"source": "2", "target": "22", "source_name": "cosmological constant", "target_name": "loop quantum gravity", "weight": 6.0, "year": 2021}, {"source": "2", "target": "23", "source_name": "cosmological constant", "target_name": "big bang", "weight": 166.0, "year": 2021}, {"source": "2", "target": "24", "source_name": "cosmological constant", "target_name": "big crunch", "weight": 20.0, "year": 2021}, {"source": "2", "target": "25", "source_name": "cosmological constant", "target_name": "quantum field theory", "weight": 5.0, "year": 2021}, {"source": "2", "target": "26", "source_name": "cosmological constant", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2021}, {"source": "2", "target": "27", "source_name": "cosmological constant", "target_name": "negative pressure", "weight": 2.0, "year": 2021}, {"source": "2", "target": "28", "source_name": "cosmological constant", "target_name": "big bounce", "weight": 3.0, "year": 2021}, {"source": "2", "target": "29", "source_name": "cosmological constant", "target_name": "cosmic rays", "weight": 1.0, "year": 2021}, {"source": "2", "target": "30", "source_name": "cosmological constant", "target_name": "dark matter", "weight": 38.0, "year": 2021}, {"source": "2", "target": "31", "source_name": "cosmological constant", "target_name": "energy density", "weight": 36.0, "year": 2021}, {"source": "2", "target": "32", "source_name": "cosmological constant", "target_name": "field theory", "weight": 13.0, "year": 2021}, {"source": "2", "target": "33", "source_name": "cosmological constant", "target_name": "quantum gravity", "weight": 26.0, "year": 2021}, {"source": "2", "target": "35", "source_name": "cosmological constant", "target_name": "string theory", "weight": 8.0, "year": 2021}, {"source": "2", "target": "36", "source_name": "cosmological constant", "target_name": "gravitational lensing", "weight": 5.0, "year": 2021}, {"source": "2", "target": "37", "source_name": "cosmological constant", "target_name": "perturbation theory", "weight": 4.0, "year": 2021}, {"source": "2", "target": "38", "source_name": "cosmological constant", "target_name": "particle physics", "weight": 3.0, "year": 2021}, {"source": "2", "target": "39", "source_name": "cosmological constant", "target_name": "gravitational wave", "weight": 3.0, "year": 2021}, {"source": "2", "target": "40", "source_name": "cosmological constant", "target_name": "quantum theory", "weight": 9.0, "year": 2021}, {"source": "2", "target": "41", "source_name": "cosmological constant", "target_name": "black hole", "weight": 14.0, "year": 2021}, {"source": "2", "target": "42", "source_name": "cosmological constant", "target_name": "planck mass", "weight": 2.0, "year": 2021}, {"source": "2", "target": "43", "source_name": "cosmological constant", "target_name": "friedmann equations", "weight": 3.0, "year": 2021}, {"source": "2", "target": "44", "source_name": "cosmological constant", "target_name": "bianchi ix", "weight": 2.0, "year": 2021}, {"source": "2", "target": "45", "source_name": "cosmological constant", "target_name": "vacuum energy", "weight": 20.0, "year": 2021}, {"source": "2", "target": "46", "source_name": "cosmological constant", "target_name": "renormalization group", "weight": 6.0, "year": 2021}, {"source": "2", "target": "47", "source_name": "cosmological constant", "target_name": "magnetic field", "weight": 1.0, "year": 2021}, {"source": "2", "target": "48", "source_name": "cosmological constant", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2021}, {"source": "2", "target": "50", "source_name": "cosmological constant", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "2", "target": "51", "source_name": "cosmological constant", "target_name": "hubble constant", "weight": 5.0, "year": 2021}, {"source": "2", "target": "52", "source_name": "cosmological constant", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2021}, {"source": "2", "target": "53", "source_name": "cosmological constant", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "2", "target": "54", "source_name": "cosmological constant", "target_name": "planck scale", "weight": 7.0, "year": 2021}, {"source": "2", "target": "56", "source_name": "cosmological constant", "target_name": "standard model", "weight": 15.0, "year": 2021}, {"source": "2", "target": "57", "source_name": "cosmological constant", "target_name": "big rip", "weight": 8.0, "year": 2021}, {"source": "2", "target": "58", "source_name": "cosmological constant", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "2", "target": "60", "source_name": "cosmological constant", "target_name": "initial condition", "weight": 16.0, "year": 2021}, {"source": "2", "target": "61", "source_name": "cosmological constant", "target_name": "quantum state", "weight": 3.0, "year": 2021}, {"source": "2", "target": "63", "source_name": "cosmological constant", "target_name": "scalar field", "weight": 29.0, "year": 2021}, {"source": "2", "target": "64", "source_name": "cosmological constant", "target_name": "parallel universes", "weight": 2.0, "year": 2021}, {"source": "2", "target": "66", "source_name": "cosmological constant", "target_name": "wave function", "weight": 7.0, "year": 2021}, {"source": "2", "target": "68", "source_name": "cosmological constant", "target_name": "effective field theory", "weight": 5.0, "year": 2021}, {"source": "2", "target": "69", "source_name": "cosmological constant", "target_name": "planck length", "weight": 4.0, "year": 2021}, {"source": "3", "target": "4", "source_name": "dark energy", "target_name": "steady state", "weight": 6.0, "year": 2021}, {"source": "3", "target": "5", "source_name": "dark energy", "target_name": "scale factor", "weight": 19.0, "year": 2021}, {"source": "3", "target": "8", "source_name": "dark energy", "target_name": "power law", "weight": 4.0, "year": 2021}, {"source": "3", "target": "9", "source_name": "dark energy", "target_name": "loop quantum cosmology", "weight": 5.0, "year": 2021}, {"source": "3", "target": "10", "source_name": "dark energy", "target_name": "angular momentum", "weight": 5.0, "year": 2021}, {"source": "3", "target": "12", "source_name": "dark energy", "target_name": "quantum mechanics", "weight": 6.0, "year": 2021}, {"source": "3", "target": "13", "source_name": "dark energy", "target_name": "cosmological principle", "weight": 7.0, "year": 2021}, {"source": "3", "target": "14", "source_name": "dark energy", "target_name": "gravitational constant", "weight": 2.0, "year": 2021}, {"source": "3", "target": "15", "source_name": "dark energy", "target_name": "phase transition", "weight": 5.0, "year": 2021}, {"source": "3", "target": "16", "source_name": "dark energy", "target_name": "quantum cosmology", "weight": 18.0, "year": 2021}, {"source": "3", "target": "17", "source_name": "dark energy", "target_name": "einstein equations", "weight": 5.0, "year": 2021}, {"source": "3", "target": "18", "source_name": "dark energy", "target_name": "cold dark matter", "weight": 5.0, "year": 2021}, {"source": "3", "target": "20", "source_name": "dark energy", "target_name": "general relativity", "weight": 40.0, "year": 2021}, {"source": "3", "target": "21", "source_name": "dark energy", "target_name": "phase space", "weight": 1.0, "year": 2021}, {"source": "3", "target": "22", "source_name": "dark energy", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2021}, {"source": "3", "target": "23", "source_name": "dark energy", "target_name": "big bang", "weight": 181.0, "year": 2021}, {"source": "3", "target": "24", "source_name": "dark energy", "target_name": "big crunch", "weight": 8.0, "year": 2021}, {"source": "3", "target": "25", "source_name": "dark energy", "target_name": "quantum field theory", "weight": 6.0, "year": 2021}, {"source": "3", "target": "26", "source_name": "dark energy", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2021}, {"source": "3", "target": "27", "source_name": "dark energy", "target_name": "negative pressure", "weight": 4.0, "year": 2021}, {"source": "3", "target": "28", "source_name": "dark energy", "target_name": "big bounce", "weight": 4.0, "year": 2021}, {"source": "3", "target": "29", "source_name": "dark energy", "target_name": "cosmic rays", "weight": 1.0, "year": 2021}, {"source": "3", "target": "30", "source_name": "dark energy", "target_name": "dark matter", "weight": 109.0, "year": 2021}, {"source": "3", "target": "31", "source_name": "dark energy", "target_name": "energy density", "weight": 38.0, "year": 2021}, {"source": "3", "target": "32", "source_name": "dark energy", "target_name": "field theory", "weight": 5.0, "year": 2021}, {"source": "3", "target": "33", "source_name": "dark energy", "target_name": "quantum gravity", "weight": 21.0, "year": 2021}, {"source": "3", "target": "34", "source_name": "dark energy", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "3", "target": "35", "source_name": "dark energy", "target_name": "string theory", "weight": 16.0, "year": 2021}, {"source": "3", "target": "36", "source_name": "dark energy", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "3", "target": "37", "source_name": "dark energy", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "3", "target": "38", "source_name": "dark energy", "target_name": "particle physics", "weight": 10.0, "year": 2021}, {"source": "3", "target": "39", "source_name": "dark energy", "target_name": "gravitational wave", "weight": 7.0, "year": 2021}, {"source": "3", "target": "40", "source_name": "dark energy", "target_name": "quantum theory", "weight": 8.0, "year": 2021}, {"source": "3", "target": "41", "source_name": "dark energy", "target_name": "black hole", "weight": 21.0, "year": 2021}, {"source": "3", "target": "42", "source_name": "dark energy", "target_name": "planck mass", "weight": 3.0, "year": 2021}, {"source": "3", "target": "43", "source_name": "dark energy", "target_name": "friedmann equations", "weight": 3.0, "year": 2021}, {"source": "3", "target": "45", "source_name": "dark energy", "target_name": "vacuum energy", "weight": 6.0, "year": 2021}, {"source": "3", "target": "47", "source_name": "dark energy", "target_name": "magnetic field", "weight": 5.0, "year": 2021}, {"source": "3", "target": "48", "source_name": "dark energy", "target_name": "big bang nucleosynthesis", "weight": 20.0, "year": 2021}, {"source": "3", "target": "49", "source_name": "dark energy", "target_name": "fred hoyle", "weight": 4.0, "year": 2021}, {"source": "3", "target": "50", "source_name": "dark energy", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "3", "target": "51", "source_name": "dark energy", "target_name": "hubble constant", "weight": 6.0, "year": 2021}, {"source": "3", "target": "52", "source_name": "dark energy", "target_name": "cosmic microwave background", "weight": 32.0, "year": 2021}, {"source": "3", "target": "53", "source_name": "dark energy", "target_name": "gravitational collapse", "weight": 5.0, "year": 2021}, {"source": "3", "target": "54", "source_name": "dark energy", "target_name": "planck scale", "weight": 6.0, "year": 2021}, {"source": "3", "target": "55", "source_name": "dark energy", "target_name": "cosmic inflation", "weight": 7.0, "year": 2021}, {"source": "3", "target": "56", "source_name": "dark energy", "target_name": "standard model", "weight": 15.0, "year": 2021}, {"source": "3", "target": "57", "source_name": "dark energy", "target_name": "big rip", "weight": 13.0, "year": 2021}, {"source": "3", "target": "58", "source_name": "dark energy", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "3", "target": "60", "source_name": "dark energy", "target_name": "initial condition", "weight": 7.0, "year": 2021}, {"source": "3", "target": "61", "source_name": "dark energy", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "3", "target": "62", "source_name": "dark energy", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2021}, {"source": "3", "target": "63", "source_name": "dark energy", "target_name": "scalar field", "weight": 25.0, "year": 2021}, {"source": "3", "target": "64", "source_name": "dark energy", "target_name": "parallel universes", "weight": 2.0, "year": 2021}, {"source": "3", "target": "66", "source_name": "dark energy", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "4", "target": "5", "source_name": "steady state", "target_name": "scale factor", "weight": 1.0, "year": 2021}, {"source": "4", "target": "9", "source_name": "steady state", "target_name": "loop quantum cosmology", "weight": 2.0, "year": 2021}, {"source": "4", "target": "13", "source_name": "steady state", "target_name": "cosmological principle", "weight": 2.0, "year": 2021}, {"source": "4", "target": "15", "source_name": "steady state", "target_name": "phase transition", "weight": 1.0, "year": 2021}, {"source": "4", "target": "16", "source_name": "steady state", "target_name": "quantum cosmology", "weight": 2.0, "year": 2021}, {"source": "4", "target": "20", "source_name": "steady state", "target_name": "general relativity", "weight": 5.0, "year": 2021}, {"source": "4", "target": "23", "source_name": "steady state", "target_name": "big bang", "weight": 27.0, "year": 2021}, {"source": "4", "target": "24", "source_name": "steady state", "target_name": "big crunch", "weight": 2.0, "year": 2021}, {"source": "4", "target": "26", "source_name": "steady state", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2021}, {"source": "4", "target": "27", "source_name": "steady state", "target_name": "negative pressure", "weight": 2.0, "year": 2021}, {"source": "4", "target": "30", "source_name": "steady state", "target_name": "dark matter", "weight": 7.0, "year": 2021}, {"source": "4", "target": "31", "source_name": "steady state", "target_name": "energy density", "weight": 1.0, "year": 2021}, {"source": "4", "target": "32", "source_name": "steady state", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "4", "target": "36", "source_name": "steady state", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "4", "target": "39", "source_name": "steady state", "target_name": "gravitational wave", "weight": 3.0, "year": 2021}, {"source": "4", "target": "45", "source_name": "steady state", "target_name": "vacuum energy", "weight": 2.0, "year": 2021}, {"source": "4", "target": "49", "source_name": "steady state", "target_name": "fred hoyle", "weight": 1.0, "year": 2021}, {"source": "4", "target": "50", "source_name": "steady state", "target_name": "structure formation", "weight": 2.0, "year": 2021}, {"source": "4", "target": "51", "source_name": "steady state", "target_name": "hubble constant", "weight": 2.0, "year": 2021}, {"source": "4", "target": "52", "source_name": "steady state", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2021}, {"source": "4", "target": "53", "source_name": "steady state", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "4", "target": "55", "source_name": "steady state", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "4", "target": "56", "source_name": "steady state", "target_name": "standard model", "weight": 9.0, "year": 2021}, {"source": "4", "target": "63", "source_name": "steady state", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "5", "target": "6", "source_name": "scale factor", "target_name": "brane cosmology", "weight": 3.0, "year": 2021}, {"source": "5", "target": "8", "source_name": "scale factor", "target_name": "power law", "weight": 3.0, "year": 2021}, {"source": "5", "target": "9", "source_name": "scale factor", "target_name": "loop quantum cosmology", "weight": 17.0, "year": 2021}, {"source": "5", "target": "11", "source_name": "scale factor", "target_name": "hilbert space", "weight": 5.0, "year": 2021}, {"source": "5", "target": "12", "source_name": "scale factor", "target_name": "quantum mechanics", "weight": 3.0, "year": 2021}, {"source": "5", "target": "14", "source_name": "scale factor", "target_name": "gravitational constant", "weight": 4.0, "year": 2021}, {"source": "5", "target": "15", "source_name": "scale factor", "target_name": "phase transition", "weight": 1.0, "year": 2021}, {"source": "5", "target": "16", "source_name": "scale factor", "target_name": "quantum cosmology", "weight": 29.0, "year": 2021}, {"source": "5", "target": "17", "source_name": "scale factor", "target_name": "einstein equations", "weight": 4.0, "year": 2021}, {"source": "5", "target": "18", "source_name": "scale factor", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "5", "target": "19", "source_name": "scale factor", "target_name": "path integral", "weight": 1.0, "year": 2021}, {"source": "5", "target": "20", "source_name": "scale factor", "target_name": "general relativity", "weight": 16.0, "year": 2021}, {"source": "5", "target": "21", "source_name": "scale factor", "target_name": "phase space", "weight": 2.0, "year": 2021}, {"source": "5", "target": "22", "source_name": "scale factor", "target_name": "loop quantum gravity", "weight": 3.0, "year": 2021}, {"source": "5", "target": "23", "source_name": "scale factor", "target_name": "big bang", "weight": 91.0, "year": 2021}, {"source": "5", "target": "24", "source_name": "scale factor", "target_name": "big crunch", "weight": 13.0, "year": 2021}, {"source": "5", "target": "27", "source_name": "scale factor", "target_name": "negative pressure", "weight": 4.0, "year": 2021}, {"source": "5", "target": "28", "source_name": "scale factor", "target_name": "big bounce", "weight": 8.0, "year": 2021}, {"source": "5", "target": "30", "source_name": "scale factor", "target_name": "dark matter", "weight": 10.0, "year": 2021}, {"source": "5", "target": "31", "source_name": "scale factor", "target_name": "energy density", "weight": 20.0, "year": 2021}, {"source": "5", "target": "33", "source_name": "scale factor", "target_name": "quantum gravity", "weight": 9.0, "year": 2021}, {"source": "5", "target": "35", "source_name": "scale factor", "target_name": "string theory", "weight": 9.0, "year": 2021}, {"source": "5", "target": "38", "source_name": "scale factor", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "5", "target": "40", "source_name": "scale factor", "target_name": "quantum theory", "weight": 6.0, "year": 2021}, {"source": "5", "target": "41", "source_name": "scale factor", "target_name": "black hole", "weight": 6.0, "year": 2021}, {"source": "5", "target": "42", "source_name": "scale factor", "target_name": "planck mass", "weight": 1.0, "year": 2021}, {"source": "5", "target": "43", "source_name": "scale factor", "target_name": "friedmann equations", "weight": 6.0, "year": 2021}, {"source": "5", "target": "45", "source_name": "scale factor", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "5", "target": "46", "source_name": "scale factor", "target_name": "renormalization group", "weight": 2.0, "year": 2021}, {"source": "5", "target": "48", "source_name": "scale factor", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2021}, {"source": "5", "target": "52", "source_name": "scale factor", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2021}, {"source": "5", "target": "53", "source_name": "scale factor", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "5", "target": "54", "source_name": "scale factor", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "5", "target": "56", "source_name": "scale factor", "target_name": "standard model", "weight": 8.0, "year": 2021}, {"source": "5", "target": "57", "source_name": "scale factor", "target_name": "big rip", "weight": 12.0, "year": 2021}, {"source": "5", "target": "60", "source_name": "scale factor", "target_name": "initial condition", "weight": 11.0, "year": 2021}, {"source": "5", "target": "63", "source_name": "scale factor", "target_name": "scalar field", "weight": 30.0, "year": 2021}, {"source": "5", "target": "65", "source_name": "scale factor", "target_name": "detailed balance", "weight": 4.0, "year": 2021}, {"source": "5", "target": "66", "source_name": "scale factor", "target_name": "wave function", "weight": 15.0, "year": 2021}, {"source": "6", "target": "12", "source_name": "brane cosmology", "target_name": "quantum mechanics", "weight": 1.0, "year": 2021}, {"source": "6", "target": "13", "source_name": "brane cosmology", "target_name": "cosmological principle", "weight": 2.0, "year": 2021}, {"source": "6", "target": "16", "source_name": "brane cosmology", "target_name": "quantum cosmology", "weight": 1.0, "year": 2021}, {"source": "6", "target": "20", "source_name": "brane cosmology", "target_name": "general relativity", "weight": 2.0, "year": 2021}, {"source": "6", "target": "23", "source_name": "brane cosmology", "target_name": "big bang", "weight": 17.0, "year": 2021}, {"source": "6", "target": "24", "source_name": "brane cosmology", "target_name": "big crunch", "weight": 2.0, "year": 2021}, {"source": "6", "target": "25", "source_name": "brane cosmology", "target_name": "quantum field theory", "weight": 1.0, "year": 2021}, {"source": "6", "target": "27", "source_name": "brane cosmology", "target_name": "negative pressure", "weight": 3.0, "year": 2021}, {"source": "6", "target": "32", "source_name": "brane cosmology", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "6", "target": "33", "source_name": "brane cosmology", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "6", "target": "35", "source_name": "brane cosmology", "target_name": "string theory", "weight": 2.0, "year": 2021}, {"source": "6", "target": "40", "source_name": "brane cosmology", "target_name": "quantum theory", "weight": 1.0, "year": 2021}, {"source": "6", "target": "41", "source_name": "brane cosmology", "target_name": "black hole", "weight": 2.0, "year": 2021}, {"source": "6", "target": "48", "source_name": "brane cosmology", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2021}, {"source": "6", "target": "56", "source_name": "brane cosmology", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "6", "target": "60", "source_name": "brane cosmology", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "6", "target": "64", "source_name": "brane cosmology", "target_name": "parallel universes", "weight": 1.0, "year": 2021}, {"source": "7", "target": "13", "source_name": "line element", "target_name": "cosmological principle", "weight": 2.0, "year": 2021}, {"source": "7", "target": "20", "source_name": "line element", "target_name": "general relativity", "weight": 2.0, "year": 2021}, {"source": "7", "target": "23", "source_name": "line element", "target_name": "big bang", "weight": 8.0, "year": 2021}, {"source": "7", "target": "26", "source_name": "line element", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2021}, {"source": "7", "target": "27", "source_name": "line element", "target_name": "negative pressure", "weight": 2.0, "year": 2021}, {"source": "7", "target": "41", "source_name": "line element", "target_name": "black hole", "weight": 2.0, "year": 2021}, {"source": "7", "target": "52", "source_name": "line element", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2021}, {"source": "8", "target": "9", "source_name": "power law", "target_name": "loop quantum cosmology", "weight": 1.0, "year": 2021}, {"source": "8", "target": "16", "source_name": "power law", "target_name": "quantum cosmology", "weight": 3.0, "year": 2021}, {"source": "8", "target": "23", "source_name": "power law", "target_name": "big bang", "weight": 8.0, "year": 2021}, {"source": "8", "target": "30", "source_name": "power law", "target_name": "dark matter", "weight": 2.0, "year": 2021}, {"source": "8", "target": "31", "source_name": "power law", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "8", "target": "33", "source_name": "power law", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "8", "target": "36", "source_name": "power law", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "8", "target": "42", "source_name": "power law", "target_name": "planck mass", "weight": 1.0, "year": 2021}, {"source": "8", "target": "48", "source_name": "power law", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "8", "target": "52", "source_name": "power law", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2021}, {"source": "8", "target": "56", "source_name": "power law", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "8", "target": "60", "source_name": "power law", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "8", "target": "63", "source_name": "power law", "target_name": "scalar field", "weight": 6.0, "year": 2021}, {"source": "8", "target": "66", "source_name": "power law", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "8", "target": "70", "source_name": "power law", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "9", "target": "11", "source_name": "loop quantum cosmology", "target_name": "hilbert space", "weight": 8.0, "year": 2021}, {"source": "9", "target": "12", "source_name": "loop quantum cosmology", "target_name": "quantum mechanics", "weight": 4.0, "year": 2021}, {"source": "9", "target": "15", "source_name": "loop quantum cosmology", "target_name": "phase transition", "weight": 3.0, "year": 2021}, {"source": "9", "target": "16", "source_name": "loop quantum cosmology", "target_name": "quantum cosmology", "weight": 140.0, "year": 2021}, {"source": "9", "target": "18", "source_name": "loop quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "9", "target": "19", "source_name": "loop quantum cosmology", "target_name": "path integral", "weight": 1.0, "year": 2021}, {"source": "9", "target": "20", "source_name": "loop quantum cosmology", "target_name": "general relativity", "weight": 33.0, "year": 2021}, {"source": "9", "target": "21", "source_name": "loop quantum cosmology", "target_name": "phase space", "weight": 8.0, "year": 2021}, {"source": "9", "target": "22", "source_name": "loop quantum cosmology", "target_name": "loop quantum gravity", "weight": 40.0, "year": 2021}, {"source": "9", "target": "23", "source_name": "loop quantum cosmology", "target_name": "big bang", "weight": 147.0, "year": 2021}, {"source": "9", "target": "24", "source_name": "loop quantum cosmology", "target_name": "big crunch", "weight": 13.0, "year": 2021}, {"source": "9", "target": "26", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2021}, {"source": "9", "target": "28", "source_name": "loop quantum cosmology", "target_name": "big bounce", "weight": 56.0, "year": 2021}, {"source": "9", "target": "30", "source_name": "loop quantum cosmology", "target_name": "dark matter", "weight": 2.0, "year": 2021}, {"source": "9", "target": "31", "source_name": "loop quantum cosmology", "target_name": "energy density", "weight": 26.0, "year": 2021}, {"source": "9", "target": "33", "source_name": "loop quantum cosmology", "target_name": "quantum gravity", "weight": 59.0, "year": 2021}, {"source": "9", "target": "35", "source_name": "loop quantum cosmology", "target_name": "string theory", "weight": 3.0, "year": 2021}, {"source": "9", "target": "37", "source_name": "loop quantum cosmology", "target_name": "perturbation theory", "weight": 3.0, "year": 2021}, {"source": "9", "target": "38", "source_name": "loop quantum cosmology", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "9", "target": "39", "source_name": "loop quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2021}, {"source": "9", "target": "40", "source_name": "loop quantum cosmology", "target_name": "quantum theory", "weight": 15.0, "year": 2021}, {"source": "9", "target": "41", "source_name": "loop quantum cosmology", "target_name": "black hole", "weight": 4.0, "year": 2021}, {"source": "9", "target": "43", "source_name": "loop quantum cosmology", "target_name": "friedmann equations", "weight": 3.0, "year": 2021}, {"source": "9", "target": "44", "source_name": "loop quantum cosmology", "target_name": "bianchi ix", "weight": 2.0, "year": 2021}, {"source": "9", "target": "47", "source_name": "loop quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2021}, {"source": "9", "target": "48", "source_name": "loop quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "9", "target": "52", "source_name": "loop quantum cosmology", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2021}, {"source": "9", "target": "53", "source_name": "loop quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "9", "target": "54", "source_name": "loop quantum cosmology", "target_name": "planck scale", "weight": 12.0, "year": 2021}, {"source": "9", "target": "55", "source_name": "loop quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2021}, {"source": "9", "target": "56", "source_name": "loop quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "9", "target": "57", "source_name": "loop quantum cosmology", "target_name": "big rip", "weight": 11.0, "year": 2021}, {"source": "9", "target": "60", "source_name": "loop quantum cosmology", "target_name": "initial condition", "weight": 17.0, "year": 2021}, {"source": "9", "target": "61", "source_name": "loop quantum cosmology", "target_name": "quantum state", "weight": 4.0, "year": 2021}, {"source": "9", "target": "63", "source_name": "loop quantum cosmology", "target_name": "scalar field", "weight": 47.0, "year": 2021}, {"source": "9", "target": "66", "source_name": "loop quantum cosmology", "target_name": "wave function", "weight": 5.0, "year": 2021}, {"source": "10", "target": "12", "source_name": "angular momentum", "target_name": "quantum mechanics", "weight": 2.0, "year": 2021}, {"source": "10", "target": "13", "source_name": "angular momentum", "target_name": "cosmological principle", "weight": 1.0, "year": 2021}, {"source": "10", "target": "16", "source_name": "angular momentum", "target_name": "quantum cosmology", "weight": 1.0, "year": 2021}, {"source": "10", "target": "20", "source_name": "angular momentum", "target_name": "general relativity", "weight": 4.0, "year": 2021}, {"source": "10", "target": "23", "source_name": "angular momentum", "target_name": "big bang", "weight": 13.0, "year": 2021}, {"source": "10", "target": "25", "source_name": "angular momentum", "target_name": "quantum field theory", "weight": 1.0, "year": 2021}, {"source": "10", "target": "30", "source_name": "angular momentum", "target_name": "dark matter", "weight": 10.0, "year": 2021}, {"source": "10", "target": "32", "source_name": "angular momentum", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "10", "target": "41", "source_name": "angular momentum", "target_name": "black hole", "weight": 4.0, "year": 2021}, {"source": "10", "target": "54", "source_name": "angular momentum", "target_name": "planck scale", "weight": 4.0, "year": 2021}, {"source": "10", "target": "55", "source_name": "angular momentum", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "10", "target": "56", "source_name": "angular momentum", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "10", "target": "66", "source_name": "angular momentum", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "10", "target": "69", "source_name": "angular momentum", "target_name": "planck length", "weight": 2.0, "year": 2021}, {"source": "11", "target": "16", "source_name": "hilbert space", "target_name": "quantum cosmology", "weight": 10.0, "year": 2021}, {"source": "11", "target": "20", "source_name": "hilbert space", "target_name": "general relativity", "weight": 1.0, "year": 2021}, {"source": "11", "target": "21", "source_name": "hilbert space", "target_name": "phase space", "weight": 1.0, "year": 2021}, {"source": "11", "target": "23", "source_name": "hilbert space", "target_name": "big bang", "weight": 16.0, "year": 2021}, {"source": "11", "target": "24", "source_name": "hilbert space", "target_name": "big crunch", "weight": 5.0, "year": 2021}, {"source": "11", "target": "28", "source_name": "hilbert space", "target_name": "big bounce", "weight": 2.0, "year": 2021}, {"source": "11", "target": "31", "source_name": "hilbert space", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "11", "target": "33", "source_name": "hilbert space", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "11", "target": "40", "source_name": "hilbert space", "target_name": "quantum theory", "weight": 6.0, "year": 2021}, {"source": "11", "target": "41", "source_name": "hilbert space", "target_name": "black hole", "weight": 2.0, "year": 2021}, {"source": "11", "target": "43", "source_name": "hilbert space", "target_name": "friedmann equations", "weight": 1.0, "year": 2021}, {"source": "11", "target": "54", "source_name": "hilbert space", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "11", "target": "61", "source_name": "hilbert space", "target_name": "quantum state", "weight": 3.0, "year": 2021}, {"source": "11", "target": "63", "source_name": "hilbert space", "target_name": "scalar field", "weight": 8.0, "year": 2021}, {"source": "11", "target": "66", "source_name": "hilbert space", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "11", "target": "69", "source_name": "hilbert space", "target_name": "planck length", "weight": 2.0, "year": 2021}, {"source": "12", "target": "16", "source_name": "quantum mechanics", "target_name": "quantum cosmology", "weight": 13.0, "year": 2021}, {"source": "12", "target": "19", "source_name": "quantum mechanics", "target_name": "path integral", "weight": 1.0, "year": 2021}, {"source": "12", "target": "20", "source_name": "quantum mechanics", "target_name": "general relativity", "weight": 19.0, "year": 2021}, {"source": "12", "target": "21", "source_name": "quantum mechanics", "target_name": "phase space", "weight": 1.0, "year": 2021}, {"source": "12", "target": "22", "source_name": "quantum mechanics", "target_name": "loop quantum gravity", "weight": 4.0, "year": 2021}, {"source": "12", "target": "23", "source_name": "quantum mechanics", "target_name": "big bang", "weight": 61.0, "year": 2021}, {"source": "12", "target": "24", "source_name": "quantum mechanics", "target_name": "big crunch", "weight": 11.0, "year": 2021}, {"source": "12", "target": "25", "source_name": "quantum mechanics", "target_name": "quantum field theory", "weight": 2.0, "year": 2021}, {"source": "12", "target": "26", "source_name": "quantum mechanics", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2021}, {"source": "12", "target": "28", "source_name": "quantum mechanics", "target_name": "big bounce", "weight": 2.0, "year": 2021}, {"source": "12", "target": "29", "source_name": "quantum mechanics", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "12", "target": "30", "source_name": "quantum mechanics", "target_name": "dark matter", "weight": 1.0, "year": 2021}, {"source": "12", "target": "31", "source_name": "quantum mechanics", "target_name": "energy density", "weight": 1.0, "year": 2021}, {"source": "12", "target": "32", "source_name": "quantum mechanics", "target_name": "field theory", "weight": 5.0, "year": 2021}, {"source": "12", "target": "33", "source_name": "quantum mechanics", "target_name": "quantum gravity", "weight": 10.0, "year": 2021}, {"source": "12", "target": "35", "source_name": "quantum mechanics", "target_name": "string theory", "weight": 3.0, "year": 2021}, {"source": "12", "target": "37", "source_name": "quantum mechanics", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "12", "target": "38", "source_name": "quantum mechanics", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "12", "target": "40", "source_name": "quantum mechanics", "target_name": "quantum theory", "weight": 8.0, "year": 2021}, {"source": "12", "target": "41", "source_name": "quantum mechanics", "target_name": "black hole", "weight": 8.0, "year": 2021}, {"source": "12", "target": "44", "source_name": "quantum mechanics", "target_name": "bianchi ix", "weight": 1.0, "year": 2021}, {"source": "12", "target": "45", "source_name": "quantum mechanics", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "12", "target": "51", "source_name": "quantum mechanics", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "12", "target": "52", "source_name": "quantum mechanics", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2021}, {"source": "12", "target": "53", "source_name": "quantum mechanics", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "12", "target": "54", "source_name": "quantum mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "12", "target": "56", "source_name": "quantum mechanics", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "12", "target": "60", "source_name": "quantum mechanics", "target_name": "initial condition", "weight": 6.0, "year": 2021}, {"source": "12", "target": "61", "source_name": "quantum mechanics", "target_name": "quantum state", "weight": 3.0, "year": 2021}, {"source": "12", "target": "63", "source_name": "quantum mechanics", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "12", "target": "64", "source_name": "quantum mechanics", "target_name": "parallel universes", "weight": 1.0, "year": 2021}, {"source": "12", "target": "66", "source_name": "quantum mechanics", "target_name": "wave function", "weight": 6.0, "year": 2021}, {"source": "12", "target": "68", "source_name": "quantum mechanics", "target_name": "effective field theory", "weight": 1.0, "year": 2021}, {"source": "13", "target": "17", "source_name": "cosmological principle", "target_name": "einstein equations", "weight": 1.0, "year": 2021}, {"source": "13", "target": "18", "source_name": "cosmological principle", "target_name": "cold dark matter", "weight": 2.0, "year": 2021}, {"source": "13", "target": "20", "source_name": "cosmological principle", "target_name": "general relativity", "weight": 7.0, "year": 2021}, {"source": "13", "target": "23", "source_name": "cosmological principle", "target_name": "big bang", "weight": 21.0, "year": 2021}, {"source": "13", "target": "27", "source_name": "cosmological principle", "target_name": "negative pressure", "weight": 2.0, "year": 2021}, {"source": "13", "target": "30", "source_name": "cosmological principle", "target_name": "dark matter", "weight": 3.0, "year": 2021}, {"source": "13", "target": "31", "source_name": "cosmological principle", "target_name": "energy density", "weight": 1.0, "year": 2021}, {"source": "13", "target": "36", "source_name": "cosmological principle", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "13", "target": "37", "source_name": "cosmological principle", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "13", "target": "38", "source_name": "cosmological principle", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "13", "target": "40", "source_name": "cosmological principle", "target_name": "quantum theory", "weight": 1.0, "year": 2021}, {"source": "13", "target": "41", "source_name": "cosmological principle", "target_name": "black hole", "weight": 2.0, "year": 2021}, {"source": "13", "target": "48", "source_name": "cosmological principle", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "13", "target": "50", "source_name": "cosmological principle", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "13", "target": "51", "source_name": "cosmological principle", "target_name": "hubble constant", "weight": 2.0, "year": 2021}, {"source": "13", "target": "52", "source_name": "cosmological principle", "target_name": "cosmic microwave background", "weight": 3.0, "year": 2021}, {"source": "13", "target": "54", "source_name": "cosmological principle", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "13", "target": "55", "source_name": "cosmological principle", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "13", "target": "56", "source_name": "cosmological principle", "target_name": "standard model", "weight": 6.0, "year": 2021}, {"source": "14", "target": "16", "source_name": "gravitational constant", "target_name": "quantum cosmology", "weight": 1.0, "year": 2021}, {"source": "14", "target": "17", "source_name": "gravitational constant", "target_name": "einstein equations", "weight": 2.0, "year": 2021}, {"source": "14", "target": "18", "source_name": "gravitational constant", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "14", "target": "20", "source_name": "gravitational constant", "target_name": "general relativity", "weight": 2.0, "year": 2021}, {"source": "14", "target": "23", "source_name": "gravitational constant", "target_name": "big bang", "weight": 12.0, "year": 2021}, {"source": "14", "target": "25", "source_name": "gravitational constant", "target_name": "quantum field theory", "weight": 1.0, "year": 2021}, {"source": "14", "target": "27", "source_name": "gravitational constant", "target_name": "negative pressure", "weight": 1.0, "year": 2021}, {"source": "14", "target": "30", "source_name": "gravitational constant", "target_name": "dark matter", "weight": 4.0, "year": 2021}, {"source": "14", "target": "31", "source_name": "gravitational constant", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "14", "target": "32", "source_name": "gravitational constant", "target_name": "field theory", "weight": 3.0, "year": 2021}, {"source": "14", "target": "33", "source_name": "gravitational constant", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "14", "target": "42", "source_name": "gravitational constant", "target_name": "planck mass", "weight": 2.0, "year": 2021}, {"source": "14", "target": "43", "source_name": "gravitational constant", "target_name": "friedmann equations", "weight": 1.0, "year": 2021}, {"source": "14", "target": "46", "source_name": "gravitational constant", "target_name": "renormalization group", "weight": 1.0, "year": 2021}, {"source": "14", "target": "48", "source_name": "gravitational constant", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2021}, {"source": "14", "target": "53", "source_name": "gravitational constant", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "14", "target": "54", "source_name": "gravitational constant", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "14", "target": "56", "source_name": "gravitational constant", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "14", "target": "63", "source_name": "gravitational constant", "target_name": "scalar field", "weight": 4.0, "year": 2021}, {"source": "15", "target": "18", "source_name": "phase transition", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "15", "target": "19", "source_name": "phase transition", "target_name": "path integral", "weight": 1.0, "year": 2021}, {"source": "15", "target": "20", "source_name": "phase transition", "target_name": "general relativity", "weight": 2.0, "year": 2021}, {"source": "15", "target": "23", "source_name": "phase transition", "target_name": "big bang", "weight": 36.0, "year": 2021}, {"source": "15", "target": "24", "source_name": "phase transition", "target_name": "big crunch", "weight": 2.0, "year": 2021}, {"source": "15", "target": "26", "source_name": "phase transition", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2021}, {"source": "15", "target": "28", "source_name": "phase transition", "target_name": "big bounce", "weight": 4.0, "year": 2021}, {"source": "15", "target": "29", "source_name": "phase transition", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "15", "target": "30", "source_name": "phase transition", "target_name": "dark matter", "weight": 8.0, "year": 2021}, {"source": "15", "target": "31", "source_name": "phase transition", "target_name": "energy density", "weight": 6.0, "year": 2021}, {"source": "15", "target": "33", "source_name": "phase transition", "target_name": "quantum gravity", "weight": 4.0, "year": 2021}, {"source": "15", "target": "36", "source_name": "phase transition", "target_name": "gravitational lensing", "weight": 1.0, "year": 2021}, {"source": "15", "target": "38", "source_name": "phase transition", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "15", "target": "39", "source_name": "phase transition", "target_name": "gravitational wave", "weight": 8.0, "year": 2021}, {"source": "15", "target": "41", "source_name": "phase transition", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "15", "target": "45", "source_name": "phase transition", "target_name": "vacuum energy", "weight": 3.0, "year": 2021}, {"source": "15", "target": "47", "source_name": "phase transition", "target_name": "magnetic field", "weight": 3.0, "year": 2021}, {"source": "15", "target": "48", "source_name": "phase transition", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2021}, {"source": "15", "target": "50", "source_name": "phase transition", "target_name": "structure formation", "weight": 2.0, "year": 2021}, {"source": "15", "target": "52", "source_name": "phase transition", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2021}, {"source": "15", "target": "53", "source_name": "phase transition", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "15", "target": "54", "source_name": "phase transition", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "15", "target": "56", "source_name": "phase transition", "target_name": "standard model", "weight": 7.0, "year": 2021}, {"source": "15", "target": "60", "source_name": "phase transition", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "15", "target": "63", "source_name": "phase transition", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "16", "target": "18", "source_name": "quantum cosmology", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "16", "target": "19", "source_name": "quantum cosmology", "target_name": "path integral", "weight": 4.0, "year": 2021}, {"source": "16", "target": "20", "source_name": "quantum cosmology", "target_name": "general relativity", "weight": 33.0, "year": 2021}, {"source": "16", "target": "21", "source_name": "quantum cosmology", "target_name": "phase space", "weight": 9.0, "year": 2021}, {"source": "16", "target": "22", "source_name": "quantum cosmology", "target_name": "loop quantum gravity", "weight": 29.0, "year": 2021}, {"source": "16", "target": "23", "source_name": "quantum cosmology", "target_name": "big bang", "weight": 162.0, "year": 2021}, {"source": "16", "target": "24", "source_name": "quantum cosmology", "target_name": "big crunch", "weight": 14.0, "year": 2021}, {"source": "16", "target": "25", "source_name": "quantum cosmology", "target_name": "quantum field theory", "weight": 2.0, "year": 2021}, {"source": "16", "target": "26", "source_name": "quantum cosmology", "target_name": "cosmic microwave background radiation", "weight": 4.0, "year": 2021}, {"source": "16", "target": "27", "source_name": "quantum cosmology", "target_name": "negative pressure", "weight": 1.0, "year": 2021}, {"source": "16", "target": "28", "source_name": "quantum cosmology", "target_name": "big bounce", "weight": 40.0, "year": 2021}, {"source": "16", "target": "29", "source_name": "quantum cosmology", "target_name": "cosmic rays", "weight": 1.0, "year": 2021}, {"source": "16", "target": "30", "source_name": "quantum cosmology", "target_name": "dark matter", "weight": 6.0, "year": 2021}, {"source": "16", "target": "31", "source_name": "quantum cosmology", "target_name": "energy density", "weight": 26.0, "year": 2021}, {"source": "16", "target": "32", "source_name": "quantum cosmology", "target_name": "field theory", "weight": 2.0, "year": 2021}, {"source": "16", "target": "33", "source_name": "quantum cosmology", "target_name": "quantum gravity", "weight": 59.0, "year": 2021}, {"source": "16", "target": "34", "source_name": "quantum cosmology", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "16", "target": "35", "source_name": "quantum cosmology", "target_name": "string theory", "weight": 8.0, "year": 2021}, {"source": "16", "target": "37", "source_name": "quantum cosmology", "target_name": "perturbation theory", "weight": 4.0, "year": 2021}, {"source": "16", "target": "38", "source_name": "quantum cosmology", "target_name": "particle physics", "weight": 2.0, "year": 2021}, {"source": "16", "target": "39", "source_name": "quantum cosmology", "target_name": "gravitational wave", "weight": 6.0, "year": 2021}, {"source": "16", "target": "40", "source_name": "quantum cosmology", "target_name": "quantum theory", "weight": 24.0, "year": 2021}, {"source": "16", "target": "41", "source_name": "quantum cosmology", "target_name": "black hole", "weight": 10.0, "year": 2021}, {"source": "16", "target": "42", "source_name": "quantum cosmology", "target_name": "planck mass", "weight": 1.0, "year": 2021}, {"source": "16", "target": "43", "source_name": "quantum cosmology", "target_name": "friedmann equations", "weight": 6.0, "year": 2021}, {"source": "16", "target": "44", "source_name": "quantum cosmology", "target_name": "bianchi ix", "weight": 3.0, "year": 2021}, {"source": "16", "target": "45", "source_name": "quantum cosmology", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "16", "target": "47", "source_name": "quantum cosmology", "target_name": "magnetic field", "weight": 4.0, "year": 2021}, {"source": "16", "target": "48", "source_name": "quantum cosmology", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "16", "target": "49", "source_name": "quantum cosmology", "target_name": "fred hoyle", "weight": 1.0, "year": 2021}, {"source": "16", "target": "51", "source_name": "quantum cosmology", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "16", "target": "52", "source_name": "quantum cosmology", "target_name": "cosmic microwave background", "weight": 18.0, "year": 2021}, {"source": "16", "target": "53", "source_name": "quantum cosmology", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "16", "target": "54", "source_name": "quantum cosmology", "target_name": "planck scale", "weight": 8.0, "year": 2021}, {"source": "16", "target": "55", "source_name": "quantum cosmology", "target_name": "cosmic inflation", "weight": 3.0, "year": 2021}, {"source": "16", "target": "56", "source_name": "quantum cosmology", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "16", "target": "57", "source_name": "quantum cosmology", "target_name": "big rip", "weight": 13.0, "year": 2021}, {"source": "16", "target": "60", "source_name": "quantum cosmology", "target_name": "initial condition", "weight": 14.0, "year": 2021}, {"source": "16", "target": "61", "source_name": "quantum cosmology", "target_name": "quantum state", "weight": 9.0, "year": 2021}, {"source": "16", "target": "63", "source_name": "quantum cosmology", "target_name": "scalar field", "weight": 64.0, "year": 2021}, {"source": "16", "target": "65", "source_name": "quantum cosmology", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "16", "target": "66", "source_name": "quantum cosmology", "target_name": "wave function", "weight": 30.0, "year": 2021}, {"source": "16", "target": "69", "source_name": "quantum cosmology", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "17", "target": "18", "source_name": "einstein equations", "target_name": "cold dark matter", "weight": 1.0, "year": 2021}, {"source": "17", "target": "19", "source_name": "einstein equations", "target_name": "path integral", "weight": 2.0, "year": 2021}, {"source": "17", "target": "20", "source_name": "einstein equations", "target_name": "general relativity", "weight": 7.0, "year": 2021}, {"source": "17", "target": "23", "source_name": "einstein equations", "target_name": "big bang", "weight": 15.0, "year": 2021}, {"source": "17", "target": "24", "source_name": "einstein equations", "target_name": "big crunch", "weight": 1.0, "year": 2021}, {"source": "17", "target": "30", "source_name": "einstein equations", "target_name": "dark matter", "weight": 5.0, "year": 2021}, {"source": "17", "target": "31", "source_name": "einstein equations", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "17", "target": "33", "source_name": "einstein equations", "target_name": "quantum gravity", "weight": 2.0, "year": 2021}, {"source": "17", "target": "41", "source_name": "einstein equations", "target_name": "black hole", "weight": 5.0, "year": 2021}, {"source": "17", "target": "45", "source_name": "einstein equations", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "17", "target": "46", "source_name": "einstein equations", "target_name": "renormalization group", "weight": 1.0, "year": 2021}, {"source": "17", "target": "53", "source_name": "einstein equations", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "17", "target": "56", "source_name": "einstein equations", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "17", "target": "59", "source_name": "einstein equations", "target_name": "shock wave", "weight": 4.0, "year": 2021}, {"source": "17", "target": "70", "source_name": "einstein equations", "target_name": "white hole", "weight": 5.0, "year": 2021}, {"source": "18", "target": "20", "source_name": "cold dark matter", "target_name": "general relativity", "weight": 1.0, "year": 2021}, {"source": "18", "target": "23", "source_name": "cold dark matter", "target_name": "big bang", "weight": 21.0, "year": 2021}, {"source": "18", "target": "26", "source_name": "cold dark matter", "target_name": "cosmic microwave background radiation", "weight": 3.0, "year": 2021}, {"source": "18", "target": "29", "source_name": "cold dark matter", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "18", "target": "30", "source_name": "cold dark matter", "target_name": "dark matter", "weight": 18.0, "year": 2021}, {"source": "18", "target": "33", "source_name": "cold dark matter", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "18", "target": "37", "source_name": "cold dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "18", "target": "38", "source_name": "cold dark matter", "target_name": "particle physics", "weight": 3.0, "year": 2021}, {"source": "18", "target": "39", "source_name": "cold dark matter", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "18", "target": "41", "source_name": "cold dark matter", "target_name": "black hole", "weight": 3.0, "year": 2021}, {"source": "18", "target": "48", "source_name": "cold dark matter", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2021}, {"source": "18", "target": "50", "source_name": "cold dark matter", "target_name": "structure formation", "weight": 2.0, "year": 2021}, {"source": "18", "target": "51", "source_name": "cold dark matter", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "18", "target": "52", "source_name": "cold dark matter", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2021}, {"source": "18", "target": "54", "source_name": "cold dark matter", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "18", "target": "55", "source_name": "cold dark matter", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "18", "target": "56", "source_name": "cold dark matter", "target_name": "standard model", "weight": 6.0, "year": 2021}, {"source": "18", "target": "63", "source_name": "cold dark matter", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "18", "target": "69", "source_name": "cold dark matter", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "19", "target": "20", "source_name": "path integral", "target_name": "general relativity", "weight": 1.0, "year": 2021}, {"source": "19", "target": "21", "source_name": "path integral", "target_name": "phase space", "weight": 2.0, "year": 2021}, {"source": "19", "target": "22", "source_name": "path integral", "target_name": "loop quantum gravity", "weight": 5.0, "year": 2021}, {"source": "19", "target": "23", "source_name": "path integral", "target_name": "big bang", "weight": 2.0, "year": 2021}, {"source": "19", "target": "25", "source_name": "path integral", "target_name": "quantum field theory", "weight": 1.0, "year": 2021}, {"source": "19", "target": "28", "source_name": "path integral", "target_name": "big bounce", "weight": 1.0, "year": 2021}, {"source": "19", "target": "31", "source_name": "path integral", "target_name": "energy density", "weight": 1.0, "year": 2021}, {"source": "19", "target": "32", "source_name": "path integral", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "19", "target": "33", "source_name": "path integral", "target_name": "quantum gravity", "weight": 8.0, "year": 2021}, {"source": "19", "target": "34", "source_name": "path integral", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "19", "target": "37", "source_name": "path integral", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "19", "target": "39", "source_name": "path integral", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "19", "target": "40", "source_name": "path integral", "target_name": "quantum theory", "weight": 3.0, "year": 2021}, {"source": "19", "target": "41", "source_name": "path integral", "target_name": "black hole", "weight": 5.0, "year": 2021}, {"source": "19", "target": "45", "source_name": "path integral", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "19", "target": "56", "source_name": "path integral", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "19", "target": "60", "source_name": "path integral", "target_name": "initial condition", "weight": 2.0, "year": 2021}, {"source": "19", "target": "61", "source_name": "path integral", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "19", "target": "63", "source_name": "path integral", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "19", "target": "68", "source_name": "path integral", "target_name": "effective field theory", "weight": 1.0, "year": 2021}, {"source": "20", "target": "21", "source_name": "general relativity", "target_name": "phase space", "weight": 3.0, "year": 2021}, {"source": "20", "target": "22", "source_name": "general relativity", "target_name": "loop quantum gravity", "weight": 23.0, "year": 2021}, {"source": "20", "target": "23", "source_name": "general relativity", "target_name": "big bang", "weight": 196.0, "year": 2021}, {"source": "20", "target": "24", "source_name": "general relativity", "target_name": "big crunch", "weight": 13.0, "year": 2021}, {"source": "20", "target": "25", "source_name": "general relativity", "target_name": "quantum field theory", "weight": 13.0, "year": 2021}, {"source": "20", "target": "26", "source_name": "general relativity", "target_name": "cosmic microwave background radiation", "weight": 8.0, "year": 2021}, {"source": "20", "target": "27", "source_name": "general relativity", "target_name": "negative pressure", "weight": 4.0, "year": 2021}, {"source": "20", "target": "28", "source_name": "general relativity", "target_name": "big bounce", "weight": 13.0, "year": 2021}, {"source": "20", "target": "29", "source_name": "general relativity", "target_name": "cosmic rays", "weight": 2.0, "year": 2021}, {"source": "20", "target": "30", "source_name": "general relativity", "target_name": "dark matter", "weight": 27.0, "year": 2021}, {"source": "20", "target": "31", "source_name": "general relativity", "target_name": "energy density", "weight": 22.0, "year": 2021}, {"source": "20", "target": "32", "source_name": "general relativity", "target_name": "field theory", "weight": 13.0, "year": 2021}, {"source": "20", "target": "33", "source_name": "general relativity", "target_name": "quantum gravity", "weight": 49.0, "year": 2021}, {"source": "20", "target": "34", "source_name": "general relativity", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "20", "target": "35", "source_name": "general relativity", "target_name": "string theory", "weight": 10.0, "year": 2021}, {"source": "20", "target": "36", "source_name": "general relativity", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "20", "target": "37", "source_name": "general relativity", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "20", "target": "38", "source_name": "general relativity", "target_name": "particle physics", "weight": 9.0, "year": 2021}, {"source": "20", "target": "39", "source_name": "general relativity", "target_name": "gravitational wave", "weight": 12.0, "year": 2021}, {"source": "20", "target": "40", "source_name": "general relativity", "target_name": "quantum theory", "weight": 21.0, "year": 2021}, {"source": "20", "target": "41", "source_name": "general relativity", "target_name": "black hole", "weight": 26.0, "year": 2021}, {"source": "20", "target": "42", "source_name": "general relativity", "target_name": "planck mass", "weight": 2.0, "year": 2021}, {"source": "20", "target": "43", "source_name": "general relativity", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "20", "target": "44", "source_name": "general relativity", "target_name": "bianchi ix", "weight": 2.0, "year": 2021}, {"source": "20", "target": "45", "source_name": "general relativity", "target_name": "vacuum energy", "weight": 3.0, "year": 2021}, {"source": "20", "target": "48", "source_name": "general relativity", "target_name": "big bang nucleosynthesis", "weight": 11.0, "year": 2021}, {"source": "20", "target": "50", "source_name": "general relativity", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "20", "target": "51", "source_name": "general relativity", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "20", "target": "52", "source_name": "general relativity", "target_name": "cosmic microwave background", "weight": 21.0, "year": 2021}, {"source": "20", "target": "53", "source_name": "general relativity", "target_name": "gravitational collapse", "weight": 4.0, "year": 2021}, {"source": "20", "target": "54", "source_name": "general relativity", "target_name": "planck scale", "weight": 13.0, "year": 2021}, {"source": "20", "target": "55", "source_name": "general relativity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2021}, {"source": "20", "target": "56", "source_name": "general relativity", "target_name": "standard model", "weight": 25.0, "year": 2021}, {"source": "20", "target": "57", "source_name": "general relativity", "target_name": "big rip", "weight": 10.0, "year": 2021}, {"source": "20", "target": "60", "source_name": "general relativity", "target_name": "initial condition", "weight": 13.0, "year": 2021}, {"source": "20", "target": "61", "source_name": "general relativity", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "20", "target": "63", "source_name": "general relativity", "target_name": "scalar field", "weight": 15.0, "year": 2021}, {"source": "20", "target": "65", "source_name": "general relativity", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "20", "target": "68", "source_name": "general relativity", "target_name": "effective field theory", "weight": 3.0, "year": 2021}, {"source": "20", "target": "70", "source_name": "general relativity", "target_name": "white hole", "weight": 3.0, "year": 2021}, {"source": "21", "target": "22", "source_name": "phase space", "target_name": "loop quantum gravity", "weight": 2.0, "year": 2021}, {"source": "21", "target": "23", "source_name": "phase space", "target_name": "big bang", "weight": 13.0, "year": 2021}, {"source": "21", "target": "24", "source_name": "phase space", "target_name": "big crunch", "weight": 1.0, "year": 2021}, {"source": "21", "target": "28", "source_name": "phase space", "target_name": "big bounce", "weight": 4.0, "year": 2021}, {"source": "21", "target": "30", "source_name": "phase space", "target_name": "dark matter", "weight": 1.0, "year": 2021}, {"source": "21", "target": "31", "source_name": "phase space", "target_name": "energy density", "weight": 7.0, "year": 2021}, {"source": "21", "target": "33", "source_name": "phase space", "target_name": "quantum gravity", "weight": 2.0, "year": 2021}, {"source": "21", "target": "37", "source_name": "phase space", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "21", "target": "40", "source_name": "phase space", "target_name": "quantum theory", "weight": 2.0, "year": 2021}, {"source": "21", "target": "48", "source_name": "phase space", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "21", "target": "57", "source_name": "phase space", "target_name": "big rip", "weight": 1.0, "year": 2021}, {"source": "21", "target": "60", "source_name": "phase space", "target_name": "initial condition", "weight": 3.0, "year": 2021}, {"source": "21", "target": "63", "source_name": "phase space", "target_name": "scalar field", "weight": 6.0, "year": 2021}, {"source": "21", "target": "66", "source_name": "phase space", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "22", "target": "23", "source_name": "loop quantum gravity", "target_name": "big bang", "weight": 52.0, "year": 2021}, {"source": "22", "target": "24", "source_name": "loop quantum gravity", "target_name": "big crunch", "weight": 6.0, "year": 2021}, {"source": "22", "target": "25", "source_name": "loop quantum gravity", "target_name": "quantum field theory", "weight": 3.0, "year": 2021}, {"source": "22", "target": "26", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background radiation", "weight": 2.0, "year": 2021}, {"source": "22", "target": "28", "source_name": "loop quantum gravity", "target_name": "big bounce", "weight": 19.0, "year": 2021}, {"source": "22", "target": "29", "source_name": "loop quantum gravity", "target_name": "cosmic rays", "weight": 1.0, "year": 2021}, {"source": "22", "target": "30", "source_name": "loop quantum gravity", "target_name": "dark matter", "weight": 1.0, "year": 2021}, {"source": "22", "target": "31", "source_name": "loop quantum gravity", "target_name": "energy density", "weight": 11.0, "year": 2021}, {"source": "22", "target": "32", "source_name": "loop quantum gravity", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "22", "target": "33", "source_name": "loop quantum gravity", "target_name": "quantum gravity", "weight": 53.0, "year": 2021}, {"source": "22", "target": "35", "source_name": "loop quantum gravity", "target_name": "string theory", "weight": 9.0, "year": 2021}, {"source": "22", "target": "37", "source_name": "loop quantum gravity", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "22", "target": "38", "source_name": "loop quantum gravity", "target_name": "particle physics", "weight": 1.0, "year": 2021}, {"source": "22", "target": "40", "source_name": "loop quantum gravity", "target_name": "quantum theory", "weight": 9.0, "year": 2021}, {"source": "22", "target": "41", "source_name": "loop quantum gravity", "target_name": "black hole", "weight": 9.0, "year": 2021}, {"source": "22", "target": "43", "source_name": "loop quantum gravity", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "22", "target": "47", "source_name": "loop quantum gravity", "target_name": "magnetic field", "weight": 1.0, "year": 2021}, {"source": "22", "target": "48", "source_name": "loop quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "22", "target": "52", "source_name": "loop quantum gravity", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2021}, {"source": "22", "target": "54", "source_name": "loop quantum gravity", "target_name": "planck scale", "weight": 7.0, "year": 2021}, {"source": "22", "target": "57", "source_name": "loop quantum gravity", "target_name": "big rip", "weight": 3.0, "year": 2021}, {"source": "22", "target": "60", "source_name": "loop quantum gravity", "target_name": "initial condition", "weight": 5.0, "year": 2021}, {"source": "22", "target": "61", "source_name": "loop quantum gravity", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "22", "target": "63", "source_name": "loop quantum gravity", "target_name": "scalar field", "weight": 13.0, "year": 2021}, {"source": "22", "target": "66", "source_name": "loop quantum gravity", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "22", "target": "70", "source_name": "loop quantum gravity", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "23", "target": "24", "source_name": "big bang", "target_name": "big crunch", "weight": 157.0, "year": 2021}, {"source": "23", "target": "25", "source_name": "big bang", "target_name": "quantum field theory", "weight": 32.0, "year": 2021}, {"source": "23", "target": "26", "source_name": "big bang", "target_name": "cosmic microwave background radiation", "weight": 57.0, "year": 2021}, {"source": "23", "target": "27", "source_name": "big bang", "target_name": "negative pressure", "weight": 14.0, "year": 2021}, {"source": "23", "target": "28", "source_name": "big bang", "target_name": "big bounce", "weight": 74.0, "year": 2021}, {"source": "23", "target": "29", "source_name": "big bang", "target_name": "cosmic rays", "weight": 13.0, "year": 2021}, {"source": "23", "target": "30", "source_name": "big bang", "target_name": "dark matter", "weight": 181.0, "year": 2021}, {"source": "23", "target": "31", "source_name": "big bang", "target_name": "energy density", "weight": 108.0, "year": 2021}, {"source": "23", "target": "32", "source_name": "big bang", "target_name": "field theory", "weight": 58.0, "year": 2021}, {"source": "23", "target": "33", "source_name": "big bang", "target_name": "quantum gravity", "weight": 158.0, "year": 2021}, {"source": "23", "target": "34", "source_name": "big bang", "target_name": "statistical mechanics", "weight": 6.0, "year": 2021}, {"source": "23", "target": "35", "source_name": "big bang", "target_name": "string theory", "weight": 82.0, "year": 2021}, {"source": "23", "target": "36", "source_name": "big bang", "target_name": "gravitational lensing", "weight": 6.0, "year": 2021}, {"source": "23", "target": "37", "source_name": "big bang", "target_name": "perturbation theory", "weight": 10.0, "year": 2021}, {"source": "23", "target": "38", "source_name": "big bang", "target_name": "particle physics", "weight": 59.0, "year": 2021}, {"source": "23", "target": "39", "source_name": "big bang", "target_name": "gravitational wave", "weight": 64.0, "year": 2021}, {"source": "23", "target": "40", "source_name": "big bang", "target_name": "quantum theory", "weight": 50.0, "year": 2021}, {"source": "23", "target": "41", "source_name": "big bang", "target_name": "black hole", "weight": 112.0, "year": 2021}, {"source": "23", "target": "42", "source_name": "big bang", "target_name": "planck mass", "weight": 16.0, "year": 2021}, {"source": "23", "target": "43", "source_name": "big bang", "target_name": "friedmann equations", "weight": 18.0, "year": 2021}, {"source": "23", "target": "44", "source_name": "big bang", "target_name": "bianchi ix", "weight": 8.0, "year": 2021}, {"source": "23", "target": "45", "source_name": "big bang", "target_name": "vacuum energy", "weight": 30.0, "year": 2021}, {"source": "23", "target": "46", "source_name": "big bang", "target_name": "renormalization group", "weight": 7.0, "year": 2021}, {"source": "23", "target": "47", "source_name": "big bang", "target_name": "magnetic field", "weight": 22.0, "year": 2021}, {"source": "23", "target": "48", "source_name": "big bang", "target_name": "big bang nucleosynthesis", "weight": 192.0, "year": 2021}, {"source": "23", "target": "49", "source_name": "big bang", "target_name": "fred hoyle", "weight": 10.0, "year": 2021}, {"source": "23", "target": "50", "source_name": "big bang", "target_name": "structure formation", "weight": 22.0, "year": 2021}, {"source": "23", "target": "51", "source_name": "big bang", "target_name": "hubble constant", "weight": 22.0, "year": 2021}, {"source": "23", "target": "52", "source_name": "big bang", "target_name": "cosmic microwave background", "weight": 156.0, "year": 2021}, {"source": "23", "target": "53", "source_name": "big bang", "target_name": "gravitational collapse", "weight": 19.0, "year": 2021}, {"source": "23", "target": "54", "source_name": "big bang", "target_name": "planck scale", "weight": 32.0, "year": 2021}, {"source": "23", "target": "55", "source_name": "big bang", "target_name": "cosmic inflation", "weight": 27.0, "year": 2021}, {"source": "23", "target": "56", "source_name": "big bang", "target_name": "standard model", "weight": 122.0, "year": 2021}, {"source": "23", "target": "57", "source_name": "big bang", "target_name": "big rip", "weight": 46.0, "year": 2021}, {"source": "23", "target": "58", "source_name": "big bang", "target_name": "nuclear physics", "weight": 14.0, "year": 2021}, {"source": "23", "target": "59", "source_name": "big bang", "target_name": "shock wave", "weight": 8.0, "year": 2021}, {"source": "23", "target": "60", "source_name": "big bang", "target_name": "initial condition", "weight": 74.0, "year": 2021}, {"source": "23", "target": "61", "source_name": "big bang", "target_name": "quantum state", "weight": 17.0, "year": 2021}, {"source": "23", "target": "62", "source_name": "big bang", "target_name": "wilkinson microwave anisotropy probe", "weight": 10.0, "year": 2021}, {"source": "23", "target": "63", "source_name": "big bang", "target_name": "scalar field", "weight": 142.0, "year": 2021}, {"source": "23", "target": "64", "source_name": "big bang", "target_name": "parallel universes", "weight": 11.0, "year": 2021}, {"source": "23", "target": "65", "source_name": "big bang", "target_name": "detailed balance", "weight": 4.0, "year": 2021}, {"source": "23", "target": "66", "source_name": "big bang", "target_name": "wave function", "weight": 29.0, "year": 2021}, {"source": "23", "target": "68", "source_name": "big bang", "target_name": "effective field theory", "weight": 10.0, "year": 2021}, {"source": "23", "target": "69", "source_name": "big bang", "target_name": "planck length", "weight": 12.0, "year": 2021}, {"source": "23", "target": "70", "source_name": "big bang", "target_name": "white hole", "weight": 11.0, "year": 2021}, {"source": "24", "target": "25", "source_name": "big crunch", "target_name": "quantum field theory", "weight": 2.0, "year": 2021}, {"source": "24", "target": "28", "source_name": "big crunch", "target_name": "big bounce", "weight": 4.0, "year": 2021}, {"source": "24", "target": "30", "source_name": "big crunch", "target_name": "dark matter", "weight": 2.0, "year": 2021}, {"source": "24", "target": "31", "source_name": "big crunch", "target_name": "energy density", "weight": 10.0, "year": 2021}, {"source": "24", "target": "32", "source_name": "big crunch", "target_name": "field theory", "weight": 13.0, "year": 2021}, {"source": "24", "target": "33", "source_name": "big crunch", "target_name": "quantum gravity", "weight": 9.0, "year": 2021}, {"source": "24", "target": "35", "source_name": "big crunch", "target_name": "string theory", "weight": 11.0, "year": 2021}, {"source": "24", "target": "37", "source_name": "big crunch", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "24", "target": "38", "source_name": "big crunch", "target_name": "particle physics", "weight": 2.0, "year": 2021}, {"source": "24", "target": "39", "source_name": "big crunch", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "24", "target": "40", "source_name": "big crunch", "target_name": "quantum theory", "weight": 6.0, "year": 2021}, {"source": "24", "target": "41", "source_name": "big crunch", "target_name": "black hole", "weight": 14.0, "year": 2021}, {"source": "24", "target": "43", "source_name": "big crunch", "target_name": "friedmann equations", "weight": 7.0, "year": 2021}, {"source": "24", "target": "45", "source_name": "big crunch", "target_name": "vacuum energy", "weight": 2.0, "year": 2021}, {"source": "24", "target": "52", "source_name": "big crunch", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2021}, {"source": "24", "target": "53", "source_name": "big crunch", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "24", "target": "54", "source_name": "big crunch", "target_name": "planck scale", "weight": 6.0, "year": 2021}, {"source": "24", "target": "55", "source_name": "big crunch", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "24", "target": "56", "source_name": "big crunch", "target_name": "standard model", "weight": 5.0, "year": 2021}, {"source": "24", "target": "57", "source_name": "big crunch", "target_name": "big rip", "weight": 17.0, "year": 2021}, {"source": "24", "target": "60", "source_name": "big crunch", "target_name": "initial condition", "weight": 5.0, "year": 2021}, {"source": "24", "target": "61", "source_name": "big crunch", "target_name": "quantum state", "weight": 4.0, "year": 2021}, {"source": "24", "target": "63", "source_name": "big crunch", "target_name": "scalar field", "weight": 32.0, "year": 2021}, {"source": "24", "target": "66", "source_name": "big crunch", "target_name": "wave function", "weight": 11.0, "year": 2021}, {"source": "24", "target": "70", "source_name": "big crunch", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "25", "target": "26", "source_name": "quantum field theory", "target_name": "cosmic microwave background radiation", "weight": 1.0, "year": 2021}, {"source": "25", "target": "30", "source_name": "quantum field theory", "target_name": "dark matter", "weight": 6.0, "year": 2021}, {"source": "25", "target": "31", "source_name": "quantum field theory", "target_name": "energy density", "weight": 1.0, "year": 2021}, {"source": "25", "target": "32", "source_name": "quantum field theory", "target_name": "field theory", "weight": 26.0, "year": 2021}, {"source": "25", "target": "33", "source_name": "quantum field theory", "target_name": "quantum gravity", "weight": 10.0, "year": 2021}, {"source": "25", "target": "34", "source_name": "quantum field theory", "target_name": "statistical mechanics", "weight": 2.0, "year": 2021}, {"source": "25", "target": "35", "source_name": "quantum field theory", "target_name": "string theory", "weight": 5.0, "year": 2021}, {"source": "25", "target": "37", "source_name": "quantum field theory", "target_name": "perturbation theory", "weight": 2.0, "year": 2021}, {"source": "25", "target": "40", "source_name": "quantum field theory", "target_name": "quantum theory", "weight": 5.0, "year": 2021}, {"source": "25", "target": "41", "source_name": "quantum field theory", "target_name": "black hole", "weight": 4.0, "year": 2021}, {"source": "25", "target": "45", "source_name": "quantum field theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "25", "target": "46", "source_name": "quantum field theory", "target_name": "renormalization group", "weight": 1.0, "year": 2021}, {"source": "25", "target": "47", "source_name": "quantum field theory", "target_name": "magnetic field", "weight": 1.0, "year": 2021}, {"source": "25", "target": "48", "source_name": "quantum field theory", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2021}, {"source": "25", "target": "52", "source_name": "quantum field theory", "target_name": "cosmic microwave background", "weight": 8.0, "year": 2021}, {"source": "25", "target": "54", "source_name": "quantum field theory", "target_name": "planck scale", "weight": 3.0, "year": 2021}, {"source": "25", "target": "55", "source_name": "quantum field theory", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "25", "target": "56", "source_name": "quantum field theory", "target_name": "standard model", "weight": 7.0, "year": 2021}, {"source": "25", "target": "60", "source_name": "quantum field theory", "target_name": "initial condition", "weight": 4.0, "year": 2021}, {"source": "25", "target": "61", "source_name": "quantum field theory", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "25", "target": "63", "source_name": "quantum field theory", "target_name": "scalar field", "weight": 7.0, "year": 2021}, {"source": "25", "target": "69", "source_name": "quantum field theory", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "26", "target": "28", "source_name": "cosmic microwave background radiation", "target_name": "big bounce", "weight": 2.0, "year": 2021}, {"source": "26", "target": "29", "source_name": "cosmic microwave background radiation", "target_name": "cosmic rays", "weight": 4.0, "year": 2021}, {"source": "26", "target": "30", "source_name": "cosmic microwave background radiation", "target_name": "dark matter", "weight": 3.0, "year": 2021}, {"source": "26", "target": "31", "source_name": "cosmic microwave background radiation", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "26", "target": "32", "source_name": "cosmic microwave background radiation", "target_name": "field theory", "weight": 1.0, "year": 2021}, {"source": "26", "target": "33", "source_name": "cosmic microwave background radiation", "target_name": "quantum gravity", "weight": 3.0, "year": 2021}, {"source": "26", "target": "35", "source_name": "cosmic microwave background radiation", "target_name": "string theory", "weight": 3.0, "year": 2021}, {"source": "26", "target": "36", "source_name": "cosmic microwave background radiation", "target_name": "gravitational lensing", "weight": 1.0, "year": 2021}, {"source": "26", "target": "38", "source_name": "cosmic microwave background radiation", "target_name": "particle physics", "weight": 4.0, "year": 2021}, {"source": "26", "target": "39", "source_name": "cosmic microwave background radiation", "target_name": "gravitational wave", "weight": 7.0, "year": 2021}, {"source": "26", "target": "40", "source_name": "cosmic microwave background radiation", "target_name": "quantum theory", "weight": 2.0, "year": 2021}, {"source": "26", "target": "41", "source_name": "cosmic microwave background radiation", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "26", "target": "48", "source_name": "cosmic microwave background radiation", "target_name": "big bang nucleosynthesis", "weight": 13.0, "year": 2021}, {"source": "26", "target": "49", "source_name": "cosmic microwave background radiation", "target_name": "fred hoyle", "weight": 1.0, "year": 2021}, {"source": "26", "target": "50", "source_name": "cosmic microwave background radiation", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "26", "target": "51", "source_name": "cosmic microwave background radiation", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "26", "target": "52", "source_name": "cosmic microwave background radiation", "target_name": "cosmic microwave background", "weight": 45.0, "year": 2021}, {"source": "26", "target": "53", "source_name": "cosmic microwave background radiation", "target_name": "gravitational collapse", "weight": 3.0, "year": 2021}, {"source": "26", "target": "54", "source_name": "cosmic microwave background radiation", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "26", "target": "55", "source_name": "cosmic microwave background radiation", "target_name": "cosmic inflation", "weight": 4.0, "year": 2021}, {"source": "26", "target": "56", "source_name": "cosmic microwave background radiation", "target_name": "standard model", "weight": 4.0, "year": 2021}, {"source": "26", "target": "58", "source_name": "cosmic microwave background radiation", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "26", "target": "60", "source_name": "cosmic microwave background radiation", "target_name": "initial condition", "weight": 2.0, "year": 2021}, {"source": "26", "target": "62", "source_name": "cosmic microwave background radiation", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2021}, {"source": "26", "target": "63", "source_name": "cosmic microwave background radiation", "target_name": "scalar field", "weight": 3.0, "year": 2021}, {"source": "27", "target": "30", "source_name": "negative pressure", "target_name": "dark matter", "weight": 2.0, "year": 2021}, {"source": "27", "target": "31", "source_name": "negative pressure", "target_name": "energy density", "weight": 2.0, "year": 2021}, {"source": "27", "target": "33", "source_name": "negative pressure", "target_name": "quantum gravity", "weight": 2.0, "year": 2021}, {"source": "27", "target": "34", "source_name": "negative pressure", "target_name": "statistical mechanics", "weight": 2.0, "year": 2021}, {"source": "27", "target": "39", "source_name": "negative pressure", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "27", "target": "40", "source_name": "negative pressure", "target_name": "quantum theory", "weight": 1.0, "year": 2021}, {"source": "27", "target": "41", "source_name": "negative pressure", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "27", "target": "43", "source_name": "negative pressure", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "27", "target": "45", "source_name": "negative pressure", "target_name": "vacuum energy", "weight": 2.0, "year": 2021}, {"source": "27", "target": "53", "source_name": "negative pressure", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "28", "target": "29", "source_name": "big bounce", "target_name": "cosmic rays", "weight": 1.0, "year": 2021}, {"source": "28", "target": "30", "source_name": "big bounce", "target_name": "dark matter", "weight": 1.0, "year": 2021}, {"source": "28", "target": "31", "source_name": "big bounce", "target_name": "energy density", "weight": 16.0, "year": 2021}, {"source": "28", "target": "33", "source_name": "big bounce", "target_name": "quantum gravity", "weight": 21.0, "year": 2021}, {"source": "28", "target": "35", "source_name": "big bounce", "target_name": "string theory", "weight": 4.0, "year": 2021}, {"source": "28", "target": "37", "source_name": "big bounce", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "28", "target": "38", "source_name": "big bounce", "target_name": "particle physics", "weight": 2.0, "year": 2021}, {"source": "28", "target": "39", "source_name": "big bounce", "target_name": "gravitational wave", "weight": 5.0, "year": 2021}, {"source": "28", "target": "40", "source_name": "big bounce", "target_name": "quantum theory", "weight": 4.0, "year": 2021}, {"source": "28", "target": "41", "source_name": "big bounce", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "28", "target": "43", "source_name": "big bounce", "target_name": "friedmann equations", "weight": 1.0, "year": 2021}, {"source": "28", "target": "52", "source_name": "big bounce", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2021}, {"source": "28", "target": "54", "source_name": "big bounce", "target_name": "planck scale", "weight": 6.0, "year": 2021}, {"source": "28", "target": "56", "source_name": "big bounce", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "28", "target": "57", "source_name": "big bounce", "target_name": "big rip", "weight": 8.0, "year": 2021}, {"source": "28", "target": "60", "source_name": "big bounce", "target_name": "initial condition", "weight": 9.0, "year": 2021}, {"source": "28", "target": "61", "source_name": "big bounce", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "28", "target": "63", "source_name": "big bounce", "target_name": "scalar field", "weight": 18.0, "year": 2021}, {"source": "28", "target": "70", "source_name": "big bounce", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "29", "target": "30", "source_name": "cosmic rays", "target_name": "dark matter", "weight": 8.0, "year": 2021}, {"source": "29", "target": "33", "source_name": "cosmic rays", "target_name": "quantum gravity", "weight": 1.0, "year": 2021}, {"source": "29", "target": "36", "source_name": "cosmic rays", "target_name": "gravitational lensing", "weight": 1.0, "year": 2021}, {"source": "29", "target": "38", "source_name": "cosmic rays", "target_name": "particle physics", "weight": 7.0, "year": 2021}, {"source": "29", "target": "39", "source_name": "cosmic rays", "target_name": "gravitational wave", "weight": 1.0, "year": 2021}, {"source": "29", "target": "40", "source_name": "cosmic rays", "target_name": "quantum theory", "weight": 1.0, "year": 2021}, {"source": "29", "target": "41", "source_name": "cosmic rays", "target_name": "black hole", "weight": 2.0, "year": 2021}, {"source": "29", "target": "48", "source_name": "cosmic rays", "target_name": "big bang nucleosynthesis", "weight": 6.0, "year": 2021}, {"source": "29", "target": "50", "source_name": "cosmic rays", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "29", "target": "52", "source_name": "cosmic rays", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2021}, {"source": "29", "target": "53", "source_name": "cosmic rays", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "29", "target": "54", "source_name": "cosmic rays", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "29", "target": "56", "source_name": "cosmic rays", "target_name": "standard model", "weight": 4.0, "year": 2021}, {"source": "29", "target": "58", "source_name": "cosmic rays", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "29", "target": "70", "source_name": "cosmic rays", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "30", "target": "31", "source_name": "dark matter", "target_name": "energy density", "weight": 14.0, "year": 2021}, {"source": "30", "target": "32", "source_name": "dark matter", "target_name": "field theory", "weight": 6.0, "year": 2021}, {"source": "30", "target": "33", "source_name": "dark matter", "target_name": "quantum gravity", "weight": 10.0, "year": 2021}, {"source": "30", "target": "35", "source_name": "dark matter", "target_name": "string theory", "weight": 4.0, "year": 2021}, {"source": "30", "target": "36", "source_name": "dark matter", "target_name": "gravitational lensing", "weight": 5.0, "year": 2021}, {"source": "30", "target": "37", "source_name": "dark matter", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "30", "target": "38", "source_name": "dark matter", "target_name": "particle physics", "weight": 19.0, "year": 2021}, {"source": "30", "target": "39", "source_name": "dark matter", "target_name": "gravitational wave", "weight": 9.0, "year": 2021}, {"source": "30", "target": "40", "source_name": "dark matter", "target_name": "quantum theory", "weight": 8.0, "year": 2021}, {"source": "30", "target": "41", "source_name": "dark matter", "target_name": "black hole", "weight": 24.0, "year": 2021}, {"source": "30", "target": "42", "source_name": "dark matter", "target_name": "planck mass", "weight": 3.0, "year": 2021}, {"source": "30", "target": "43", "source_name": "dark matter", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "30", "target": "45", "source_name": "dark matter", "target_name": "vacuum energy", "weight": 4.0, "year": 2021}, {"source": "30", "target": "46", "source_name": "dark matter", "target_name": "renormalization group", "weight": 3.0, "year": 2021}, {"source": "30", "target": "47", "source_name": "dark matter", "target_name": "magnetic field", "weight": 7.0, "year": 2021}, {"source": "30", "target": "48", "source_name": "dark matter", "target_name": "big bang nucleosynthesis", "weight": 59.0, "year": 2021}, {"source": "30", "target": "49", "source_name": "dark matter", "target_name": "fred hoyle", "weight": 4.0, "year": 2021}, {"source": "30", "target": "50", "source_name": "dark matter", "target_name": "structure formation", "weight": 11.0, "year": 2021}, {"source": "30", "target": "51", "source_name": "dark matter", "target_name": "hubble constant", "weight": 10.0, "year": 2021}, {"source": "30", "target": "52", "source_name": "dark matter", "target_name": "cosmic microwave background", "weight": 28.0, "year": 2021}, {"source": "30", "target": "53", "source_name": "dark matter", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "30", "target": "54", "source_name": "dark matter", "target_name": "planck scale", "weight": 6.0, "year": 2021}, {"source": "30", "target": "55", "source_name": "dark matter", "target_name": "cosmic inflation", "weight": 7.0, "year": 2021}, {"source": "30", "target": "56", "source_name": "dark matter", "target_name": "standard model", "weight": 27.0, "year": 2021}, {"source": "30", "target": "57", "source_name": "dark matter", "target_name": "big rip", "weight": 6.0, "year": 2021}, {"source": "30", "target": "58", "source_name": "dark matter", "target_name": "nuclear physics", "weight": 7.0, "year": 2021}, {"source": "30", "target": "60", "source_name": "dark matter", "target_name": "initial condition", "weight": 3.0, "year": 2021}, {"source": "30", "target": "61", "source_name": "dark matter", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "30", "target": "62", "source_name": "dark matter", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2021}, {"source": "30", "target": "63", "source_name": "dark matter", "target_name": "scalar field", "weight": 9.0, "year": 2021}, {"source": "30", "target": "64", "source_name": "dark matter", "target_name": "parallel universes", "weight": 7.0, "year": 2021}, {"source": "30", "target": "66", "source_name": "dark matter", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "30", "target": "69", "source_name": "dark matter", "target_name": "planck length", "weight": 3.0, "year": 2021}, {"source": "31", "target": "32", "source_name": "energy density", "target_name": "field theory", "weight": 8.0, "year": 2021}, {"source": "31", "target": "33", "source_name": "energy density", "target_name": "quantum gravity", "weight": 19.0, "year": 2021}, {"source": "31", "target": "34", "source_name": "energy density", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "31", "target": "35", "source_name": "energy density", "target_name": "string theory", "weight": 7.0, "year": 2021}, {"source": "31", "target": "36", "source_name": "energy density", "target_name": "gravitational lensing", "weight": 2.0, "year": 2021}, {"source": "31", "target": "37", "source_name": "energy density", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "31", "target": "38", "source_name": "energy density", "target_name": "particle physics", "weight": 4.0, "year": 2021}, {"source": "31", "target": "39", "source_name": "energy density", "target_name": "gravitational wave", "weight": 6.0, "year": 2021}, {"source": "31", "target": "40", "source_name": "energy density", "target_name": "quantum theory", "weight": 6.0, "year": 2021}, {"source": "31", "target": "41", "source_name": "energy density", "target_name": "black hole", "weight": 3.0, "year": 2021}, {"source": "31", "target": "42", "source_name": "energy density", "target_name": "planck mass", "weight": 5.0, "year": 2021}, {"source": "31", "target": "44", "source_name": "energy density", "target_name": "bianchi ix", "weight": 4.0, "year": 2021}, {"source": "31", "target": "45", "source_name": "energy density", "target_name": "vacuum energy", "weight": 9.0, "year": 2021}, {"source": "31", "target": "48", "source_name": "energy density", "target_name": "big bang nucleosynthesis", "weight": 25.0, "year": 2021}, {"source": "31", "target": "50", "source_name": "energy density", "target_name": "structure formation", "weight": 3.0, "year": 2021}, {"source": "31", "target": "51", "source_name": "energy density", "target_name": "hubble constant", "weight": 3.0, "year": 2021}, {"source": "31", "target": "52", "source_name": "energy density", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2021}, {"source": "31", "target": "53", "source_name": "energy density", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "31", "target": "54", "source_name": "energy density", "target_name": "planck scale", "weight": 8.0, "year": 2021}, {"source": "31", "target": "55", "source_name": "energy density", "target_name": "cosmic inflation", "weight": 5.0, "year": 2021}, {"source": "31", "target": "56", "source_name": "energy density", "target_name": "standard model", "weight": 4.0, "year": 2021}, {"source": "31", "target": "57", "source_name": "energy density", "target_name": "big rip", "weight": 12.0, "year": 2021}, {"source": "31", "target": "58", "source_name": "energy density", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "31", "target": "60", "source_name": "energy density", "target_name": "initial condition", "weight": 4.0, "year": 2021}, {"source": "31", "target": "61", "source_name": "energy density", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "31", "target": "63", "source_name": "energy density", "target_name": "scalar field", "weight": 23.0, "year": 2021}, {"source": "31", "target": "64", "source_name": "energy density", "target_name": "parallel universes", "weight": 1.0, "year": 2021}, {"source": "31", "target": "66", "source_name": "energy density", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "31", "target": "68", "source_name": "energy density", "target_name": "effective field theory", "weight": 6.0, "year": 2021}, {"source": "32", "target": "33", "source_name": "field theory", "target_name": "quantum gravity", "weight": 25.0, "year": 2021}, {"source": "32", "target": "34", "source_name": "field theory", "target_name": "statistical mechanics", "weight": 1.0, "year": 2021}, {"source": "32", "target": "35", "source_name": "field theory", "target_name": "string theory", "weight": 10.0, "year": 2021}, {"source": "32", "target": "37", "source_name": "field theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "32", "target": "38", "source_name": "field theory", "target_name": "particle physics", "weight": 2.0, "year": 2021}, {"source": "32", "target": "40", "source_name": "field theory", "target_name": "quantum theory", "weight": 6.0, "year": 2021}, {"source": "32", "target": "41", "source_name": "field theory", "target_name": "black hole", "weight": 7.0, "year": 2021}, {"source": "32", "target": "43", "source_name": "field theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "32", "target": "44", "source_name": "field theory", "target_name": "bianchi ix", "weight": 1.0, "year": 2021}, {"source": "32", "target": "45", "source_name": "field theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "32", "target": "46", "source_name": "field theory", "target_name": "renormalization group", "weight": 3.0, "year": 2021}, {"source": "32", "target": "47", "source_name": "field theory", "target_name": "magnetic field", "weight": 3.0, "year": 2021}, {"source": "32", "target": "48", "source_name": "field theory", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2021}, {"source": "32", "target": "52", "source_name": "field theory", "target_name": "cosmic microwave background", "weight": 5.0, "year": 2021}, {"source": "32", "target": "54", "source_name": "field theory", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "32", "target": "56", "source_name": "field theory", "target_name": "standard model", "weight": 11.0, "year": 2021}, {"source": "32", "target": "60", "source_name": "field theory", "target_name": "initial condition", "weight": 6.0, "year": 2021}, {"source": "32", "target": "61", "source_name": "field theory", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "32", "target": "63", "source_name": "field theory", "target_name": "scalar field", "weight": 13.0, "year": 2021}, {"source": "32", "target": "66", "source_name": "field theory", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "32", "target": "68", "source_name": "field theory", "target_name": "effective field theory", "weight": 10.0, "year": 2021}, {"source": "32", "target": "69", "source_name": "field theory", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "33", "target": "34", "source_name": "quantum gravity", "target_name": "statistical mechanics", "weight": 2.0, "year": 2021}, {"source": "33", "target": "35", "source_name": "quantum gravity", "target_name": "string theory", "weight": 21.0, "year": 2021}, {"source": "33", "target": "36", "source_name": "quantum gravity", "target_name": "gravitational lensing", "weight": 1.0, "year": 2021}, {"source": "33", "target": "37", "source_name": "quantum gravity", "target_name": "perturbation theory", "weight": 3.0, "year": 2021}, {"source": "33", "target": "38", "source_name": "quantum gravity", "target_name": "particle physics", "weight": 7.0, "year": 2021}, {"source": "33", "target": "39", "source_name": "quantum gravity", "target_name": "gravitational wave", "weight": 2.0, "year": 2021}, {"source": "33", "target": "40", "source_name": "quantum gravity", "target_name": "quantum theory", "weight": 20.0, "year": 2021}, {"source": "33", "target": "41", "source_name": "quantum gravity", "target_name": "black hole", "weight": 26.0, "year": 2021}, {"source": "33", "target": "42", "source_name": "quantum gravity", "target_name": "planck mass", "weight": 3.0, "year": 2021}, {"source": "33", "target": "43", "source_name": "quantum gravity", "target_name": "friedmann equations", "weight": 8.0, "year": 2021}, {"source": "33", "target": "44", "source_name": "quantum gravity", "target_name": "bianchi ix", "weight": 4.0, "year": 2021}, {"source": "33", "target": "45", "source_name": "quantum gravity", "target_name": "vacuum energy", "weight": 2.0, "year": 2021}, {"source": "33", "target": "46", "source_name": "quantum gravity", "target_name": "renormalization group", "weight": 2.0, "year": 2021}, {"source": "33", "target": "47", "source_name": "quantum gravity", "target_name": "magnetic field", "weight": 4.0, "year": 2021}, {"source": "33", "target": "48", "source_name": "quantum gravity", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2021}, {"source": "33", "target": "50", "source_name": "quantum gravity", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "33", "target": "51", "source_name": "quantum gravity", "target_name": "hubble constant", "weight": 2.0, "year": 2021}, {"source": "33", "target": "52", "source_name": "quantum gravity", "target_name": "cosmic microwave background", "weight": 16.0, "year": 2021}, {"source": "33", "target": "53", "source_name": "quantum gravity", "target_name": "gravitational collapse", "weight": 2.0, "year": 2021}, {"source": "33", "target": "54", "source_name": "quantum gravity", "target_name": "planck scale", "weight": 10.0, "year": 2021}, {"source": "33", "target": "55", "source_name": "quantum gravity", "target_name": "cosmic inflation", "weight": 6.0, "year": 2021}, {"source": "33", "target": "56", "source_name": "quantum gravity", "target_name": "standard model", "weight": 11.0, "year": 2021}, {"source": "33", "target": "57", "source_name": "quantum gravity", "target_name": "big rip", "weight": 5.0, "year": 2021}, {"source": "33", "target": "60", "source_name": "quantum gravity", "target_name": "initial condition", "weight": 9.0, "year": 2021}, {"source": "33", "target": "61", "source_name": "quantum gravity", "target_name": "quantum state", "weight": 5.0, "year": 2021}, {"source": "33", "target": "63", "source_name": "quantum gravity", "target_name": "scalar field", "weight": 20.0, "year": 2021}, {"source": "33", "target": "65", "source_name": "quantum gravity", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "33", "target": "66", "source_name": "quantum gravity", "target_name": "wave function", "weight": 4.0, "year": 2021}, {"source": "33", "target": "68", "source_name": "quantum gravity", "target_name": "effective field theory", "weight": 6.0, "year": 2021}, {"source": "33", "target": "69", "source_name": "quantum gravity", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "33", "target": "70", "source_name": "quantum gravity", "target_name": "white hole", "weight": 2.0, "year": 2021}, {"source": "34", "target": "40", "source_name": "statistical mechanics", "target_name": "quantum theory", "weight": 2.0, "year": 2021}, {"source": "34", "target": "41", "source_name": "statistical mechanics", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "34", "target": "47", "source_name": "statistical mechanics", "target_name": "magnetic field", "weight": 1.0, "year": 2021}, {"source": "34", "target": "52", "source_name": "statistical mechanics", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2021}, {"source": "34", "target": "54", "source_name": "statistical mechanics", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "34", "target": "56", "source_name": "statistical mechanics", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "34", "target": "61", "source_name": "statistical mechanics", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "35", "target": "37", "source_name": "string theory", "target_name": "perturbation theory", "weight": 1.0, "year": 2021}, {"source": "35", "target": "38", "source_name": "string theory", "target_name": "particle physics", "weight": 3.0, "year": 2021}, {"source": "35", "target": "39", "source_name": "string theory", "target_name": "gravitational wave", "weight": 7.0, "year": 2021}, {"source": "35", "target": "40", "source_name": "string theory", "target_name": "quantum theory", "weight": 1.0, "year": 2021}, {"source": "35", "target": "41", "source_name": "string theory", "target_name": "black hole", "weight": 4.0, "year": 2021}, {"source": "35", "target": "45", "source_name": "string theory", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "35", "target": "47", "source_name": "string theory", "target_name": "magnetic field", "weight": 6.0, "year": 2021}, {"source": "35", "target": "48", "source_name": "string theory", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2021}, {"source": "35", "target": "52", "source_name": "string theory", "target_name": "cosmic microwave background", "weight": 10.0, "year": 2021}, {"source": "35", "target": "53", "source_name": "string theory", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "35", "target": "54", "source_name": "string theory", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "35", "target": "55", "source_name": "string theory", "target_name": "cosmic inflation", "weight": 5.0, "year": 2021}, {"source": "35", "target": "56", "source_name": "string theory", "target_name": "standard model", "weight": 7.0, "year": 2021}, {"source": "35", "target": "59", "source_name": "string theory", "target_name": "shock wave", "weight": 1.0, "year": 2021}, {"source": "35", "target": "60", "source_name": "string theory", "target_name": "initial condition", "weight": 11.0, "year": 2021}, {"source": "35", "target": "63", "source_name": "string theory", "target_name": "scalar field", "weight": 7.0, "year": 2021}, {"source": "35", "target": "64", "source_name": "string theory", "target_name": "parallel universes", "weight": 2.0, "year": 2021}, {"source": "35", "target": "66", "source_name": "string theory", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "35", "target": "68", "source_name": "string theory", "target_name": "effective field theory", "weight": 3.0, "year": 2021}, {"source": "36", "target": "39", "source_name": "gravitational lensing", "target_name": "gravitational wave", "weight": 3.0, "year": 2021}, {"source": "36", "target": "48", "source_name": "gravitational lensing", "target_name": "big bang nucleosynthesis", "weight": 2.0, "year": 2021}, {"source": "36", "target": "50", "source_name": "gravitational lensing", "target_name": "structure formation", "weight": 2.0, "year": 2021}, {"source": "36", "target": "51", "source_name": "gravitational lensing", "target_name": "hubble constant", "weight": 4.0, "year": 2021}, {"source": "36", "target": "52", "source_name": "gravitational lensing", "target_name": "cosmic microwave background", "weight": 2.0, "year": 2021}, {"source": "36", "target": "63", "source_name": "gravitational lensing", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "37", "target": "41", "source_name": "perturbation theory", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "37", "target": "46", "source_name": "perturbation theory", "target_name": "renormalization group", "weight": 1.0, "year": 2021}, {"source": "37", "target": "52", "source_name": "perturbation theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2021}, {"source": "37", "target": "60", "source_name": "perturbation theory", "target_name": "initial condition", "weight": 2.0, "year": 2021}, {"source": "37", "target": "61", "source_name": "perturbation theory", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "37", "target": "63", "source_name": "perturbation theory", "target_name": "scalar field", "weight": 5.0, "year": 2021}, {"source": "38", "target": "39", "source_name": "particle physics", "target_name": "gravitational wave", "weight": 3.0, "year": 2021}, {"source": "38", "target": "41", "source_name": "particle physics", "target_name": "black hole", "weight": 1.0, "year": 2021}, {"source": "38", "target": "45", "source_name": "particle physics", "target_name": "vacuum energy", "weight": 1.0, "year": 2021}, {"source": "38", "target": "48", "source_name": "particle physics", "target_name": "big bang nucleosynthesis", "weight": 29.0, "year": 2021}, {"source": "38", "target": "50", "source_name": "particle physics", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "38", "target": "52", "source_name": "particle physics", "target_name": "cosmic microwave background", "weight": 17.0, "year": 2021}, {"source": "38", "target": "54", "source_name": "particle physics", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "38", "target": "55", "source_name": "particle physics", "target_name": "cosmic inflation", "weight": 3.0, "year": 2021}, {"source": "38", "target": "56", "source_name": "particle physics", "target_name": "standard model", "weight": 34.0, "year": 2021}, {"source": "38", "target": "58", "source_name": "particle physics", "target_name": "nuclear physics", "weight": 1.0, "year": 2021}, {"source": "38", "target": "60", "source_name": "particle physics", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "38", "target": "63", "source_name": "particle physics", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "38", "target": "70", "source_name": "particle physics", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "39", "target": "40", "source_name": "gravitational wave", "target_name": "quantum theory", "weight": 2.0, "year": 2021}, {"source": "39", "target": "41", "source_name": "gravitational wave", "target_name": "black hole", "weight": 10.0, "year": 2021}, {"source": "39", "target": "43", "source_name": "gravitational wave", "target_name": "friedmann equations", "weight": 1.0, "year": 2021}, {"source": "39", "target": "47", "source_name": "gravitational wave", "target_name": "magnetic field", "weight": 6.0, "year": 2021}, {"source": "39", "target": "48", "source_name": "gravitational wave", "target_name": "big bang nucleosynthesis", "weight": 10.0, "year": 2021}, {"source": "39", "target": "50", "source_name": "gravitational wave", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "39", "target": "52", "source_name": "gravitational wave", "target_name": "cosmic microwave background", "weight": 13.0, "year": 2021}, {"source": "39", "target": "54", "source_name": "gravitational wave", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "39", "target": "55", "source_name": "gravitational wave", "target_name": "cosmic inflation", "weight": 4.0, "year": 2021}, {"source": "39", "target": "56", "source_name": "gravitational wave", "target_name": "standard model", "weight": 6.0, "year": 2021}, {"source": "39", "target": "57", "source_name": "gravitational wave", "target_name": "big rip", "weight": 1.0, "year": 2021}, {"source": "39", "target": "60", "source_name": "gravitational wave", "target_name": "initial condition", "weight": 3.0, "year": 2021}, {"source": "39", "target": "63", "source_name": "gravitational wave", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "39", "target": "68", "source_name": "gravitational wave", "target_name": "effective field theory", "weight": 1.0, "year": 2021}, {"source": "40", "target": "41", "source_name": "quantum theory", "target_name": "black hole", "weight": 12.0, "year": 2021}, {"source": "40", "target": "43", "source_name": "quantum theory", "target_name": "friedmann equations", "weight": 2.0, "year": 2021}, {"source": "40", "target": "48", "source_name": "quantum theory", "target_name": "big bang nucleosynthesis", "weight": 1.0, "year": 2021}, {"source": "40", "target": "51", "source_name": "quantum theory", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "40", "target": "52", "source_name": "quantum theory", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2021}, {"source": "40", "target": "53", "source_name": "quantum theory", "target_name": "gravitational collapse", "weight": 3.0, "year": 2021}, {"source": "40", "target": "54", "source_name": "quantum theory", "target_name": "planck scale", "weight": 4.0, "year": 2021}, {"source": "40", "target": "56", "source_name": "quantum theory", "target_name": "standard model", "weight": 7.0, "year": 2021}, {"source": "40", "target": "57", "source_name": "quantum theory", "target_name": "big rip", "weight": 5.0, "year": 2021}, {"source": "40", "target": "60", "source_name": "quantum theory", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "40", "target": "61", "source_name": "quantum theory", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "40", "target": "63", "source_name": "quantum theory", "target_name": "scalar field", "weight": 11.0, "year": 2021}, {"source": "40", "target": "66", "source_name": "quantum theory", "target_name": "wave function", "weight": 4.0, "year": 2021}, {"source": "41", "target": "42", "source_name": "black hole", "target_name": "planck mass", "weight": 2.0, "year": 2021}, {"source": "41", "target": "43", "source_name": "black hole", "target_name": "friedmann equations", "weight": 3.0, "year": 2021}, {"source": "41", "target": "45", "source_name": "black hole", "target_name": "vacuum energy", "weight": 2.0, "year": 2021}, {"source": "41", "target": "47", "source_name": "black hole", "target_name": "magnetic field", "weight": 5.0, "year": 2021}, {"source": "41", "target": "48", "source_name": "black hole", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2021}, {"source": "41", "target": "51", "source_name": "black hole", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "41", "target": "52", "source_name": "black hole", "target_name": "cosmic microwave background", "weight": 4.0, "year": 2021}, {"source": "41", "target": "53", "source_name": "black hole", "target_name": "gravitational collapse", "weight": 4.0, "year": 2021}, {"source": "41", "target": "54", "source_name": "black hole", "target_name": "planck scale", "weight": 3.0, "year": 2021}, {"source": "41", "target": "55", "source_name": "black hole", "target_name": "cosmic inflation", "weight": 6.0, "year": 2021}, {"source": "41", "target": "56", "source_name": "black hole", "target_name": "standard model", "weight": 6.0, "year": 2021}, {"source": "41", "target": "57", "source_name": "black hole", "target_name": "big rip", "weight": 2.0, "year": 2021}, {"source": "41", "target": "59", "source_name": "black hole", "target_name": "shock wave", "weight": 4.0, "year": 2021}, {"source": "41", "target": "60", "source_name": "black hole", "target_name": "initial condition", "weight": 4.0, "year": 2021}, {"source": "41", "target": "61", "source_name": "black hole", "target_name": "quantum state", "weight": 3.0, "year": 2021}, {"source": "41", "target": "63", "source_name": "black hole", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "41", "target": "64", "source_name": "black hole", "target_name": "parallel universes", "weight": 1.0, "year": 2021}, {"source": "41", "target": "68", "source_name": "black hole", "target_name": "effective field theory", "weight": 1.0, "year": 2021}, {"source": "41", "target": "69", "source_name": "black hole", "target_name": "planck length", "weight": 3.0, "year": 2021}, {"source": "41", "target": "70", "source_name": "black hole", "target_name": "white hole", "weight": 8.0, "year": 2021}, {"source": "42", "target": "48", "source_name": "planck mass", "target_name": "big bang nucleosynthesis", "weight": 5.0, "year": 2021}, {"source": "42", "target": "51", "source_name": "planck mass", "target_name": "hubble constant", "weight": 3.0, "year": 2021}, {"source": "42", "target": "54", "source_name": "planck mass", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "42", "target": "55", "source_name": "planck mass", "target_name": "cosmic inflation", "weight": 2.0, "year": 2021}, {"source": "42", "target": "56", "source_name": "planck mass", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "42", "target": "63", "source_name": "planck mass", "target_name": "scalar field", "weight": 4.0, "year": 2021}, {"source": "42", "target": "70", "source_name": "planck mass", "target_name": "white hole", "weight": 3.0, "year": 2021}, {"source": "43", "target": "48", "source_name": "friedmann equations", "target_name": "big bang nucleosynthesis", "weight": 3.0, "year": 2021}, {"source": "43", "target": "56", "source_name": "friedmann equations", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "43", "target": "57", "source_name": "friedmann equations", "target_name": "big rip", "weight": 5.0, "year": 2021}, {"source": "43", "target": "61", "source_name": "friedmann equations", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "43", "target": "63", "source_name": "friedmann equations", "target_name": "scalar field", "weight": 4.0, "year": 2021}, {"source": "43", "target": "69", "source_name": "friedmann equations", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "44", "target": "47", "source_name": "bianchi ix", "target_name": "magnetic field", "weight": 1.0, "year": 2021}, {"source": "44", "target": "60", "source_name": "bianchi ix", "target_name": "initial condition", "weight": 1.0, "year": 2021}, {"source": "44", "target": "61", "source_name": "bianchi ix", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "44", "target": "63", "source_name": "bianchi ix", "target_name": "scalar field", "weight": 4.0, "year": 2021}, {"source": "44", "target": "66", "source_name": "bianchi ix", "target_name": "wave function", "weight": 2.0, "year": 2021}, {"source": "45", "target": "50", "source_name": "vacuum energy", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "45", "target": "52", "source_name": "vacuum energy", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2021}, {"source": "45", "target": "53", "source_name": "vacuum energy", "target_name": "gravitational collapse", "weight": 3.0, "year": 2021}, {"source": "45", "target": "55", "source_name": "vacuum energy", "target_name": "cosmic inflation", "weight": 1.0, "year": 2021}, {"source": "45", "target": "56", "source_name": "vacuum energy", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "45", "target": "57", "source_name": "vacuum energy", "target_name": "big rip", "weight": 3.0, "year": 2021}, {"source": "45", "target": "60", "source_name": "vacuum energy", "target_name": "initial condition", "weight": 7.0, "year": 2021}, {"source": "45", "target": "63", "source_name": "vacuum energy", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "45", "target": "70", "source_name": "vacuum energy", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "46", "target": "51", "source_name": "renormalization group", "target_name": "hubble constant", "weight": 1.0, "year": 2021}, {"source": "46", "target": "56", "source_name": "renormalization group", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "46", "target": "57", "source_name": "renormalization group", "target_name": "big rip", "weight": 2.0, "year": 2021}, {"source": "46", "target": "63", "source_name": "renormalization group", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "47", "target": "48", "source_name": "magnetic field", "target_name": "big bang nucleosynthesis", "weight": 7.0, "year": 2021}, {"source": "47", "target": "50", "source_name": "magnetic field", "target_name": "structure formation", "weight": 1.0, "year": 2021}, {"source": "47", "target": "52", "source_name": "magnetic field", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2021}, {"source": "47", "target": "56", "source_name": "magnetic field", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "47", "target": "57", "source_name": "magnetic field", "target_name": "big rip", "weight": 2.0, "year": 2021}, {"source": "47", "target": "61", "source_name": "magnetic field", "target_name": "quantum state", "weight": 1.0, "year": 2021}, {"source": "47", "target": "63", "source_name": "magnetic field", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "47", "target": "66", "source_name": "magnetic field", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "48", "target": "50", "source_name": "big bang nucleosynthesis", "target_name": "structure formation", "weight": 6.0, "year": 2021}, {"source": "48", "target": "51", "source_name": "big bang nucleosynthesis", "target_name": "hubble constant", "weight": 3.0, "year": 2021}, {"source": "48", "target": "52", "source_name": "big bang nucleosynthesis", "target_name": "cosmic microwave background", "weight": 65.0, "year": 2021}, {"source": "48", "target": "55", "source_name": "big bang nucleosynthesis", "target_name": "cosmic inflation", "weight": 1.0, "year": 2021}, {"source": "48", "target": "56", "source_name": "big bang nucleosynthesis", "target_name": "standard model", "weight": 30.0, "year": 2021}, {"source": "48", "target": "58", "source_name": "big bang nucleosynthesis", "target_name": "nuclear physics", "weight": 12.0, "year": 2021}, {"source": "48", "target": "60", "source_name": "big bang nucleosynthesis", "target_name": "initial condition", "weight": 3.0, "year": 2021}, {"source": "48", "target": "62", "source_name": "big bang nucleosynthesis", "target_name": "wilkinson microwave anisotropy probe", "weight": 3.0, "year": 2021}, {"source": "48", "target": "63", "source_name": "big bang nucleosynthesis", "target_name": "scalar field", "weight": 10.0, "year": 2021}, {"source": "48", "target": "64", "source_name": "big bang nucleosynthesis", "target_name": "parallel universes", "weight": 5.0, "year": 2021}, {"source": "48", "target": "65", "source_name": "big bang nucleosynthesis", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "48", "target": "68", "source_name": "big bang nucleosynthesis", "target_name": "effective field theory", "weight": 2.0, "year": 2021}, {"source": "49", "target": "52", "source_name": "fred hoyle", "target_name": "cosmic microwave background", "weight": 1.0, "year": 2021}, {"source": "49", "target": "56", "source_name": "fred hoyle", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "50", "target": "51", "source_name": "structure formation", "target_name": "hubble constant", "weight": 2.0, "year": 2021}, {"source": "50", "target": "52", "source_name": "structure formation", "target_name": "cosmic microwave background", "weight": 7.0, "year": 2021}, {"source": "50", "target": "53", "source_name": "structure formation", "target_name": "gravitational collapse", "weight": 1.0, "year": 2021}, {"source": "50", "target": "54", "source_name": "structure formation", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "50", "target": "55", "source_name": "structure formation", "target_name": "cosmic inflation", "weight": 1.0, "year": 2021}, {"source": "50", "target": "56", "source_name": "structure formation", "target_name": "standard model", "weight": 3.0, "year": 2021}, {"source": "51", "target": "52", "source_name": "hubble constant", "target_name": "cosmic microwave background", "weight": 6.0, "year": 2021}, {"source": "51", "target": "54", "source_name": "hubble constant", "target_name": "planck scale", "weight": 2.0, "year": 2021}, {"source": "51", "target": "56", "source_name": "hubble constant", "target_name": "standard model", "weight": 1.0, "year": 2021}, {"source": "52", "target": "53", "source_name": "cosmic microwave background", "target_name": "gravitational collapse", "weight": 4.0, "year": 2021}, {"source": "52", "target": "54", "source_name": "cosmic microwave background", "target_name": "planck scale", "weight": 1.0, "year": 2021}, {"source": "52", "target": "55", "source_name": "cosmic microwave background", "target_name": "cosmic inflation", "weight": 8.0, "year": 2021}, {"source": "52", "target": "56", "source_name": "cosmic microwave background", "target_name": "standard model", "weight": 24.0, "year": 2021}, {"source": "52", "target": "58", "source_name": "cosmic microwave background", "target_name": "nuclear physics", "weight": 3.0, "year": 2021}, {"source": "52", "target": "60", "source_name": "cosmic microwave background", "target_name": "initial condition", "weight": 6.0, "year": 2021}, {"source": "52", "target": "61", "source_name": "cosmic microwave background", "target_name": "quantum state", "weight": 2.0, "year": 2021}, {"source": "52", "target": "62", "source_name": "cosmic microwave background", "target_name": "wilkinson microwave anisotropy probe", "weight": 5.0, "year": 2021}, {"source": "52", "target": "63", "source_name": "cosmic microwave background", "target_name": "scalar field", "weight": 11.0, "year": 2021}, {"source": "52", "target": "65", "source_name": "cosmic microwave background", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "53", "target": "56", "source_name": "gravitational collapse", "target_name": "standard model", "weight": 2.0, "year": 2021}, {"source": "53", "target": "60", "source_name": "gravitational collapse", "target_name": "initial condition", "weight": 4.0, "year": 2021}, {"source": "54", "target": "56", "source_name": "planck scale", "target_name": "standard model", "weight": 4.0, "year": 2021}, {"source": "54", "target": "57", "source_name": "planck scale", "target_name": "big rip", "weight": 4.0, "year": 2021}, {"source": "54", "target": "60", "source_name": "planck scale", "target_name": "initial condition", "weight": 2.0, "year": 2021}, {"source": "54", "target": "63", "source_name": "planck scale", "target_name": "scalar field", "weight": 2.0, "year": 2021}, {"source": "54", "target": "69", "source_name": "planck scale", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "54", "target": "70", "source_name": "planck scale", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "55", "target": "56", "source_name": "cosmic inflation", "target_name": "standard model", "weight": 3.0, "year": 2021}, {"source": "55", "target": "60", "source_name": "cosmic inflation", "target_name": "initial condition", "weight": 2.0, "year": 2021}, {"source": "55", "target": "63", "source_name": "cosmic inflation", "target_name": "scalar field", "weight": 1.0, "year": 2021}, {"source": "55", "target": "69", "source_name": "cosmic inflation", "target_name": "planck length", "weight": 3.0, "year": 2021}, {"source": "55", "target": "70", "source_name": "cosmic inflation", "target_name": "white hole", "weight": 2.0, "year": 2021}, {"source": "56", "target": "58", "source_name": "standard model", "target_name": "nuclear physics", "weight": 2.0, "year": 2021}, {"source": "56", "target": "59", "source_name": "standard model", "target_name": "shock wave", "weight": 2.0, "year": 2021}, {"source": "56", "target": "60", "source_name": "standard model", "target_name": "initial condition", "weight": 4.0, "year": 2021}, {"source": "56", "target": "62", "source_name": "standard model", "target_name": "wilkinson microwave anisotropy probe", "weight": 1.0, "year": 2021}, {"source": "56", "target": "63", "source_name": "standard model", "target_name": "scalar field", "weight": 5.0, "year": 2021}, {"source": "56", "target": "66", "source_name": "standard model", "target_name": "wave function", "weight": 1.0, "year": 2021}, {"source": "56", "target": "68", "source_name": "standard model", "target_name": "effective field theory", "weight": 1.0, "year": 2021}, {"source": "56", "target": "69", "source_name": "standard model", "target_name": "planck length", "weight": 1.0, "year": 2021}, {"source": "56", "target": "70", "source_name": "standard model", "target_name": "white hole", "weight": 1.0, "year": 2021}, {"source": "57", "target": "63", "source_name": "big rip", "target_name": "scalar field", "weight": 5.0, "year": 2021}, {"source": "58", "target": "64", "source_name": "nuclear physics", "target_name": "parallel universes", "weight": 5.0, "year": 2021}, {"source": "59", "target": "70", "source_name": "shock wave", "target_name": "white hole", "weight": 4.0, "year": 2021}, {"source": "60", "target": "63", "source_name": "initial condition", "target_name": "scalar field", "weight": 14.0, "year": 2021}, {"source": "60", "target": "64", "source_name": "initial condition", "target_name": "parallel universes", "weight": 1.0, "year": 2021}, {"source": "60", "target": "66", "source_name": "initial condition", "target_name": "wave function", "weight": 6.0, "year": 2021}, {"source": "60", "target": "68", "source_name": "initial condition", "target_name": "effective field theory", "weight": 4.0, "year": 2021}, {"source": "60", "target": "69", "source_name": "initial condition", "target_name": "planck length", "weight": 2.0, "year": 2021}, {"source": "61", "target": "63", "source_name": "quantum state", "target_name": "scalar field", "weight": 5.0, "year": 2021}, {"source": "61", "target": "66", "source_name": "quantum state", "target_name": "wave function", "weight": 3.0, "year": 2021}, {"source": "63", "target": "65", "source_name": "scalar field", "target_name": "detailed balance", "weight": 2.0, "year": 2021}, {"source": "63", "target": "66", "source_name": "scalar field", "target_name": "wave function", "weight": 15.0, "year": 2021}, {"source": "63", "target": "68", "source_name": "scalar field", "target_name": "effective field theory", "weight": 2.0, "year": 2021}, {"source": "65", "target": "66", "source_name": "detailed balance", "target_name": "wave function", "weight": 2.0, "year": 2021}]}]}