acecalisto3/PhiCo-D-Instruck
Text Generation • Updated • 35 • 2
id stringlengths 9 16 | title stringlengths 1 382 | abstract stringlengths 6 6.09k | categories stringlengths 5 125 |
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0704.0001 | Calculation of prompt diphoton production cross sections at Tevatron and
LHC energies | A fully differential calculation in perturbative quantum chromodynamics is
presented for the production of massive photon pairs at hadron colliders. All
next-to-leading order perturbative contributions from quark-antiquark,
gluon-(anti)quark, and gluon-gluon subprocesses are included, as well as
all-orders resummatio... | hep-ph |
0704.0002 | Sparsity-certifying Graph Decompositions | We describe a new algorithm, the $(k,\ell)$-pebble game with colors, and use
it obtain a characterization of the family of $(k,\ell)$-sparse graphs and
algorithmic solutions to a family of problems concerning tree decompositions of
graphs. Special instances of sparse graphs appear in rigidity theory and have
received... | math.CO cs.CG |
0704.0003 | The evolution of the Earth-Moon system based on the dark matter field
fluid model | The evolution of Earth-Moon system is described by the dark matter field
fluid model proposed in the Meeting of Division of Particle and Field 2004,
American Physical Society. The current behavior of the Earth-Moon system agrees
with this model very well and the general pattern of the evolution of the
Moon-Earth syst... | physics.gen-ph |
0704.0004 | A determinant of Stirling cycle numbers counts unlabeled acyclic
single-source automata | We show that a determinant of Stirling cycle numbers counts unlabeled acyclic
single-source automata. The proof involves a bijection from these automata to
certain marked lattice paths and a sign-reversing involution to evaluate the
determinant.
| math.CO |
0704.0005 | From dyadic $\Lambda_{\alpha}$ to $\Lambda_{\alpha}$ | In this paper we show how to compute the $\Lambda_{\alpha}$ norm, $\alpha\ge
0$, using the dyadic grid. This result is a consequence of the description of
the Hardy spaces $H^p(R^N)$ in terms of dyadic and special atoms.
| math.CA math.FA |
0704.0006 | Bosonic characters of atomic Cooper pairs across resonance | We study the two-particle wave function of paired atoms in a Fermi gas with
tunable interaction strengths controlled by Feshbach resonance. The Cooper pair
wave function is examined for its bosonic characters, which is quantified by
the correction of Bose enhancement factor associated with the creation and
annihilati... | cond-mat.mes-hall |
0704.0007 | Polymer Quantum Mechanics and its Continuum Limit | A rather non-standard quantum representation of the canonical commutation
relations of quantum mechanics systems, known as the polymer representation has
gained some attention in recent years, due to its possible relation with Planck
scale physics. In particular, this approach has been followed in a symmetric
sector ... | gr-qc |
0704.0008 | Numerical solution of shock and ramp compression for general material
properties | A general formulation was developed to represent material models for
applications in dynamic loading. Numerical methods were devised to calculate
response to shock and ramp compression, and ramp decompression, generalizing
previous solutions for scalar equations of state. The numerical methods were
found to be flexib... | cond-mat.mtrl-sci |
0704.0009 | The Spitzer c2d Survey of Large, Nearby, Insterstellar Clouds. IX. The
Serpens YSO Population As Observed With IRAC and MIPS | We discuss the results from the combined IRAC and MIPS c2d Spitzer Legacy
observations of the Serpens star-forming region. In particular we present a set
of criteria for isolating bona fide young stellar objects, YSO's, from the
extensive background contamination by extra-galactic objects. We then discuss
the propert... | astro-ph |
0704.0010 | Partial cubes: structures, characterizations, and constructions | Partial cubes are isometric subgraphs of hypercubes. Structures on a graph
defined by means of semicubes, and Djokovi\'{c}'s and Winkler's relations play
an important role in the theory of partial cubes. These structures are employed
in the paper to characterize bipartite graphs and partial cubes of arbitrary
dimensi... | math.CO |
0704.0011 | Computing genus 2 Hilbert-Siegel modular forms over $\Q(\sqrt{5})$ via
the Jacquet-Langlands correspondence | In this paper we present an algorithm for computing Hecke eigensystems of
Hilbert-Siegel cusp forms over real quadratic fields of narrow class number
one. We give some illustrative examples using the quadratic field
$\Q(\sqrt{5})$. In those examples, we identify Hilbert-Siegel eigenforms that
are possible lifts from ... | math.NT math.AG |
0704.0012 | Distribution of integral Fourier Coefficients of a Modular Form of Half
Integral Weight Modulo Primes | Recently, Bruinier and Ono classified cusp forms $f(z) := \sum_{n=0}^{\infty}
a_f(n)q ^n \in S_{\lambda+1/2}(\Gamma_0(N),\chi)\cap \mathbb{Z}[[q]]$ that does
not satisfy a certain distribution property for modulo odd primes $p$. In this
paper, using Rankin-Cohen Bracket, we extend this result to modular forms of
half... | math.NT |
0704.0013 | $p$-adic Limit of Weakly Holomorphic Modular Forms of Half Integral
Weight | Serre obtained the p-adic limit of the integral Fourier coefficient of
modular forms on $SL_2(\mathbb{Z})$ for $p=2,3,5,7$. In this paper, we extend
the result of Serre to weakly holomorphic modular forms of half integral weight
on $\Gamma_{0}(4N)$ for $N=1,2,4$. A proof is based on linear relations among
Fourier coe... | math.NT |
0704.0014 | Iterated integral and the loop product | In this article we discuss a relation between the string topology and
differential forms based on the theory of Chen's iterated integrals and the
cyclic bar complex.
| math.CA math.AT |
0704.0015 | Fermionic superstring loop amplitudes in the pure spinor formalism | The pure spinor formulation of the ten-dimensional superstring leads to
manifestly supersymmetric loop amplitudes, expressed as integrals in pure
spinor superspace. This paper explores different methods to evaluate these
integrals and then uses them to calculate the kinematic factors of the one-loop
and two-loop mass... | hep-th |
0704.0016 | Lifetime of doubly charmed baryons | In this work, we evaluate the lifetimes of the doubly charmed baryons
$\Xi_{cc}^{+}$, $\Xi_{cc}^{++}$ and $\Omega_{cc}^{+}$. We carefully calculate
the non-spectator contributions at the quark level where the Cabibbo-suppressed
diagrams are also included. The hadronic matrix elements are evaluated in the
simple non-r... | hep-ph |
0704.0017 | Spectroscopic Observations of the Intermediate Polar EX Hydrae in
Quiescence | Results from spectroscopic observations of the Intermediate Polar (IP) EX Hya
in quiescence during 1991 and 2001 are presented. Spin-modulated radial
velocities consistent with an outer disc origin were detected for the first
time in an IP. The spin pulsation was modulated with velocities near ~500-600
km/s. These ve... | astro-ph |
0704.0018 | In quest of a generalized Callias index theorem | We give a prescription for how to compute the Callias index, using as
regulator an exponential function. We find agreement with old results in all
odd dimensions. We show that the problem of computing the dimension of the
moduli space of self-dual strings can be formulated as an index problem in
even-dimensional (loo... | hep-th |
0704.0019 | Approximation for extinction probability of the contact process based on
the Gr\"obner basis | In this note we give a new method for getting a series of approximations for
the extinction probability of the one-dimensional contact process by using the
Gr\"obner basis.
| math.PR math.AG |
0704.0020 | Measurement of the Hadronic Form Factor in D0 --> K- e+ nue Decays | The shape of the hadronic form factor f+(q2) in the decay D0 --> K- e+ nue
has been measured in a model independent analysis and compared with theoretical
calculations. We use 75 fb(-1) of data recorded by the BABAR detector at the
PEPII electron-positron collider. The corresponding decay branching fraction,
relative... | hep-ex |
0704.0021 | Molecular Synchronization Waves in Arrays of Allosterically Regulated
Enzymes | Spatiotemporal pattern formation in a product-activated enzymic reaction at
high enzyme concentrations is investigated. Stochastic simulations show that
catalytic turnover cycles of individual enzymes can become coherent and that
complex wave patterns of molecular synchronization can develop. The analysis
based on th... | nlin.PS physics.chem-ph q-bio.MN |
0704.0022 | Stochastic Lie group integrators | We present Lie group integrators for nonlinear stochastic differential
equations with non-commutative vector fields whose solution evolves on a smooth
finite dimensional manifold. Given a Lie group action that generates transport
along the manifold, we pull back the stochastic flow on the manifold to the Lie
group vi... | math.NA |
0704.0023 | ALMA as the ideal probe of the solar chromosphere | The very nature of the solar chromosphere, its structuring and dynamics,
remains far from being properly understood, in spite of intensive research.
Here we point out the potential of chromospheric observations at millimeter
wavelengths to resolve this long-standing problem. Computations carried out
with a sophistica... | astro-ph |
0704.0024 | Formation of quasi-solitons in transverse confined ferromagnetic film
media | The formation of quasi-2D spin-wave waveforms in longitudinally magnetized
stripes of ferrimagnetic film was observed by using time- and space-resolved
Brillouin light scattering technique. In the linear regime it was found that
the confinement decreases the amplitude of dynamic magnetization near the
lateral stripe ... | nlin.PS |
0704.0025 | Spectroscopic Properties of Polarons in Strongly Correlated Systems by
Exact Diagrammatic Monte Carlo Method | We present recent advances in understanding of the ground and excited states
of the electron-phonon coupled systems obtained by novel methods of
Diagrammatic Monte Carlo and Stochastic Optimization, which enable the
approximation-free calculation of Matsubara Green function in imaginary times
and perform unbiased ana... | cond-mat.str-el cond-mat.stat-mech |
0704.0026 | Placeholder Substructures II: Meta-Fractals, Made of Box-Kites, Fill
Infinite-Dimensional Skies | Zero-divisors (ZDs) derived by Cayley-Dickson Process (CDP) from
N-dimensional hypercomplex numbers (N a power of 2, at least 4) can represent
singularities and, as N approaches infinite, fractals -- and thereby,scale-free
networks. Any integer greater than 8 and not a power of 2 generates a
meta-fractal or "Sky" whe... | math.RA |
0704.0027 | Filling-Factor-Dependent Magnetophonon Resonance in Graphene | We describe a peculiar fine structure acquired by the in-plane optical phonon
at the Gamma-point in graphene when it is brought into resonance with one of
the inter-Landau-level transitions in this material. The effect is most
pronounced when this lattice mode (associated with the G-band in graphene Raman
spectrum) i... | cond-mat.mes-hall |
0704.0028 | Pfaffians, hafnians and products of real linear functionals | We prove pfaffian and hafnian versions of Lieb's inequalities on determinants
and permanents of positive semi-definite matrices. We use the hafnian
inequality to improve the lower bound of R\'ev\'esz and Sarantopoulos on the
norm of a product of linear functionals on a real Euclidean space (this subject
is sometimes ... | math.CA math.PR |
0704.0029 | Understanding the Flavor Symmetry Breaking and Nucleon Flavor-Spin
Structure within Chiral Quark Model | In $\XQM$, a quark can emit Goldstone bosons. The flavor symmetry breaking in
the Goldstone boson emission process is used to intepret the nucleon
flavor-spin structure. In this paper, we study the inner structure of
constituent quarks implied in $\XQM$ caused by the Goldstone boson emission
process in nucleon. From ... | hep-ph |
0704.0030 | Tuning correlation effects with electron-phonon interactions | We investigate the effect of tuning the phonon energy on the correlation
effects in models of electron-phonon interactions using DMFT. In the regime
where itinerant electrons, instantaneous electron-phonon driven correlations
and static distortions compete on similar energy scales, we find several
interesting results... | cond-mat.str-el |
0704.0031 | Crystal channeling of LHC forward protons with preserved distribution in
phase space | We show that crystal can trap a broad (x, x', y, y', E) distribution of
particles and channel it preserved with a high precision. This sampled-and-hold
distribution can be steered by a bent crystal for analysis downstream. In
simulations for the 7 TeV Large Hadron Collider, a crystal adapted to the
accelerator lattic... | hep-ph |
0704.0032 | Probing non-standard neutrino interactions with supernova neutrinos | We analyze the possibility of probing non-standard neutrino interactions
(NSI, for short) through the detection of neutrinos produced in a future
galactic supernova (SN).We consider the effect of NSI on the neutrino
propagation through the SN envelope within a three-neutrino framework, paying
special attention to the... | hep-ph |
0704.0033 | Convergence of the discrete dipole approximation. I. Theoretical
analysis | We performed a rigorous theoretical convergence analysis of the discrete
dipole approximation (DDA). We prove that errors in any measured quantity are
bounded by a sum of a linear and quadratic term in the size of a dipole d, when
the latter is in the range of DDA applicability. Moreover, the linear term is
significa... | physics.optics physics.comp-ph |
0704.0034 | Origin of adaptive mutants: a quantum measurement? | This is a supplement to the paper arXiv:q-bio/0701050, containing the text of
correspondence sent to Nature in 1990.
| q-bio.PE q-bio.CB quant-ph |
0704.0035 | Convergence of the discrete dipole approximation. II. An extrapolation
technique to increase the accuracy | We propose an extrapolation technique that allows accuracy improvement of the
discrete dipole approximation computations. The performance of this technique
was studied empirically based on extensive simulations for 5 test cases using
many different discretizations. The quality of the extrapolation improves with
refin... | physics.optics physics.comp-ph |
0704.0036 | A remark on the number of steady states in a multiple futile cycle | The multisite phosphorylation-dephosphorylation cycle is a motif repeatedly
used in cell signaling. This motif itself can generate a variety of dynamic
behaviors like bistability and ultrasensitivity without direct positive
feedbacks. In this paper, we study the number of positive steady states of a
general multisite... | q-bio.QM q-bio.MN |
0704.0037 | The discrete dipole approximation for simulation of light scattering by
particles much larger than the wavelength | In this manuscript we investigate the capabilities of the Discrete Dipole
Approximation (DDA) to simulate scattering from particles that are much larger
than the wavelength of the incident light, and describe an optimized publicly
available DDA computer program that processes the large number of dipoles
required for ... | physics.optics physics.comp-ph |
0704.0038 | The discrete dipole approximation: an overview and recent developments | We present a review of the discrete dipole approximation (DDA), which is a
general method to simulate light scattering by arbitrarily shaped particles. We
put the method in historical context and discuss recent developments, taking
the viewpoint of a general framework based on the integral equations for the
electric ... | physics.optics physics.comp-ph |
0704.0039 | Scalar radius of the pion and zeros in the form factor | The quadratic pion scalar radius, \la r^2\ra^\pi_s, plays an important role
for present precise determinations of \pi\pi scattering. Recently, Yndur\'ain,
using an Omn\`es representation of the null isospin(I) non-strange pion scalar
form factor, obtains \la r^2\ra^\pi_s=0.75\pm 0.07 fm^2. This value is larger
than t... | hep-ph hep-lat nucl-th |
0704.0040 | Multilinear function series in conditionally free probability with
amalgamation | As in the cases of freeness and monotonic independence, the notion of
conditional freeness is meaningful when complex-valued states are replaced by
positive conditional expectations. In this framework, the paper presents
several positivity results, a version of the central limit theorem and an
analogue of the conditi... | math.OA math.FA |
0704.0041 | Quantum Group of Isometries in Classical and Noncommutative Geometry | We formulate a quantum generalization of the notion of the group of
Riemannian isometries for a compact Riemannian manifold, by introducing a
natural notion of smooth and isometric action by a compact quantum group on a
classical or noncommutative manifold described by spectral triples, and then
proving the existence... | math.QA math-ph math.MP |
0704.0042 | General System theory, Like-Quantum Semantics and Fuzzy Sets | It is outlined the possibility to extend the quantum formalism in relation to
the requirements of the general systems theory. It can be done by using a
quantum semantics arising from the deep logical structure of quantum theory. It
is so possible taking into account the logical openness relationship between
observer ... | physics.gen-ph quant-ph |
0704.0043 | Nonequilibrium entropy limiters in lattice Boltzmann methods | We construct a system of nonequilibrium entropy limiters for the lattice
Boltzmann methods (LBM). These limiters erase spurious oscillations without
blurring of shocks, and do not affect smooth solutions. In general, they do the
same work for LBM as flux limiters do for finite differences, finite volumes
and finite e... | cond-mat.stat-mech cond-mat.mtrl-sci |
0704.0044 | Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in
magnetized weakly collisional plasmas | We present a theoretical framework for plasma turbulence in astrophysical
plasmas (solar wind, interstellar medium, galaxy clusters, accretion disks).
The key assumptions are that the turbulence is anisotropic with respect to the
mean magnetic field and frequencies are low compared to the ion cyclotron
frequency. The... | astro-ph nlin.CD physics.plasm-ph physics.space-ph |
0704.0045 | Evolution of solitary waves and undular bores in shallow-water flows
over a gradual slope with bottom friction | This paper considers the propagation of shallow-water solitary and nonlinear
periodic waves over a gradual slope with bottom friction in the framework of a
variable-coefficient Korteweg-de Vries equation. We use the Whitham averaging
method, using a recent development of this theory for perturbed integrable
equations... | nlin.PS nlin.SI |
0704.0046 | A limit relation for entropy and channel capacity per unit cost | In a quantum mechanical model, Diosi, Feldmann and Kosloff arrived at a
conjecture stating that the limit of the entropy of certain mixtures is the
relative entropy as system size goes to infinity. The conjecture is proven in
this paper for density matrices. The first proof is analytic and uses the
quantum law of lar... | quant-ph cs.IT math.IT |
0704.0047 | Intelligent location of simultaneously active acoustic emission sources:
Part I | The intelligent acoustic emission locator is described in Part I, while Part
II discusses blind source separation, time delay estimation and location of two
simultaneously active continuous acoustic emission sources.
The location of acoustic emission on complicated aircraft frame structures is
a difficult problem o... | cs.NE cs.AI |
0704.0048 | Inference on white dwarf binary systems using the first round Mock LISA
Data Challenges data sets | We report on the analysis of selected single source data sets from the first
round of the Mock LISA Data Challenges (MLDC) for white dwarf binaries. We
implemented an end-to-end pipeline consisting of a grid-based coherent
pre-processing unit for signal detection, and an automatic Markov Chain Monte
Carlo post-proces... | gr-qc astro-ph |
0704.0049 | An algorithm for the classification of smooth Fano polytopes | We present an algorithm that produces the classification list of smooth Fano
d-polytopes for any given d. The input of the algorithm is a single number,
namely the positive integer d. The algorithm has been used to classify smooth
Fano d-polytopes for d<=7. There are 7622 isomorphism classes of smooth Fano
6-polytope... | math.CO |
0704.0050 | Intelligent location of simultaneously active acoustic emission sources:
Part II | Part I describes an intelligent acoustic emission locator, while Part II
discusses blind source separation, time delay estimation and location of two
continuous acoustic emission sources.
Acoustic emission (AE) analysis is used for characterization and location of
developing defects in materials. AE sources often g... | cs.NE cs.AI |
0704.0051 | Visualizing Teleportation | A novel way of picturing the processing of quantum information is described,
allowing a direct visualization of teleportation of quantum states and
providing a simple and intuitive understanding of this fascinating phenomenon.
The discussion is aimed at providing physicists a method of explaining
teleportation to non... | physics.ed-ph quant-ph |
0704.0052 | Quantum Field Theory on Curved Backgrounds. II. Spacetime Symmetries | We study space-time symmetries in scalar quantum field theory (including
interacting theories) on static space-times. We first consider Euclidean
quantum field theory on a static Riemannian manifold, and show that the
isometry group is generated by one-parameter subgroups which have either
self-adjoint or unitary qua... | hep-th |
0704.0053 | A Global Approach to the Theory of Special Finsler Manifolds | The aim of the present paper is to provide a global presentation of the
theory of special Finsler manifolds. We introduce and investigate globally (or
intrinsically, free from local coordinates) many of the most important and most
commonly used special Finsler manifolds: locally Minkowskian, Berwald,
Landesberg, gene... | math.DG gr-qc |
0704.0054 | The Hardy-Lorentz Spaces $H^{p,q}(R^n)$ | In this paper we consider the Hardy-Lorentz spaces $H^{p,q}(R^n)$, with
$0<p\le 1$, $0<q\le \infty$. We discuss the atomic decomposition of the
elements in these spaces, their interpolation properties, and the behavior of
singular integrals and other operators acting on them.
| math.CA math.FA |
0704.0055 | Potassium intercalation in graphite: A van der Waals density-functional
study | Potassium intercalation in graphite is investigated by first-principles
theory. The bonding in the potassium-graphite compound is reasonably well
accounted for by traditional semilocal density functional theory (DFT)
calculations. However, to investigate the intercalate formation energy from
pure potassium atoms and ... | cond-mat.soft cond-mat.mtrl-sci |
0704.0056 | Phase diagram of Gaussian-core nematics | We study a simple model of a nematic liquid crystal made of parallel
ellipsoidal particles interacting via a repulsive Gaussian law. After
identifying the relevant solid phases of the system through a careful
zero-temperature scrutiny of as many as eleven candidate crystal structures, we
determine the melting tempera... | cond-mat.soft cond-mat.mtrl-sci |
0704.0057 | High-spin to low-spin and orbital polarization transitions in
multiorbital Mott systems | We study the interplay of crystal field splitting and Hund coupling in a
two-orbital model which captures the essential physics of systems with two
electrons or holes in the e_g shell. We use single site dynamical mean field
theory with a recently developed impurity solver which is able to access strong
couplings and... | cond-mat.str-el |
0704.0058 | Intelligent Life in Cosmology | I shall present three arguments for the proposition that intelligent life is
very rare in the universe. First, I shall summarize the consensus opinion of
the founders of the Modern Synthesis (Simpson, Dobzhanski, and Mayr) that the
evolution of intelligent life is exceedingly improbable. Second, I shall
develop the F... | physics.pop-ph |
0704.0059 | The Mass and Radius of the Unseen M-Dwarf Companion in the Single-Lined
Eclipsing Binary HAT-TR-205-013 | We derive masses and radii for both components in the single-lined eclipsing
binary HAT-TR-205-013, which consists of a F7V primary and a late M-dwarf
secondary. The system's period is short, $P=2.230736 \pm 0.000010$ days, with
an orbit indistinguishable from circular, $e=0.012 \pm 0.021$. We demonstrate
generally t... | astro-ph |
0704.0060 | Coulomb excitation of unstable nuclei at intermediate energies | We investigate the Coulomb excitation of low-lying states of unstable nuclei
in intermediate energy collisions ($E_{lab}\sim10-500$ MeV/nucleon). It is
shown that the cross sections for the $E1$ and $E2$ transitions are larger at
lower energies, much less than 10 MeV/nucleon. Retardation effects and Coulomb
distortio... | nucl-th |
0704.0061 | Intersection Bodies and Generalized Cosine Transforms | Intersection bodies represent a remarkable class of geometric objects
associated with sections of star bodies and invoking
Radon transforms, generalized cosine transforms, and the relevant Fourier
analysis. The main focus of this article is interrelation between generalized
cosine transforms of different kinds in t... | math.FA |
0704.0062 | On-line Viterbi Algorithm and Its Relationship to Random Walks | In this paper, we introduce the on-line Viterbi algorithm for decoding hidden
Markov models (HMMs) in much smaller than linear space. Our analysis on
two-state HMMs suggests that the expected maximum memory used to decode
sequence of length $n$ with $m$-state HMM can be as low as $\Theta(m\log n)$,
without a signific... | cs.DS |
0704.0063 | Experimental efforts in search of 76Ge Neutrinoless Double Beta Decay | Neutrinoless double beta decay is one of the most sensitive approaches in
non-accelerator particle physics to take us into a regime of physics beyond the
standard model. This article is a brief review of the experiments in search of
neutrinoless double beta decay from 76Ge. Following a brief introduction of the
proce... | hep-ph |
0704.0064 | Nilpotent symmetry invariance in the superfield formulation: the
(non-)Abelian 1-form gauge theories | We capture the off-shell as well as the on-shell nilpotent
Becchi-Rouet-Stora-Tyutin (BRST) and anti-BRST symmetry invariance of the
Lagrangian densities of the four (3 + 1)-dimensional (4D) (non-)Abelian 1-form
gauge theories within the framework of the superfield formalism. In particular,
we provide the geometrical... | hep-th |
0704.0065 | Littlewood-Richardson polynomials | We introduce a family of rings of symmetric functions depending on an
infinite sequence of parameters. A distinguished basis of such a ring is
comprised by analogues of the Schur functions. The corresponding structure
coefficients are polynomials in the parameters which we call the
Littlewood-Richardson polynomials. ... | math.AG math.CO |
0704.0066 | Lagrangian quantum field theory in momentum picture. IV. Commutation
relations for free fields | Possible (algebraic) commutation relations in the Lagrangian quantum theory
of free (scalar, spinor and vector) fields are considered from mathematical
view-point. As sources of these relations are employed the Heisenberg
equations/relations for the dynamical variables and a specific condition for
uniqueness of the o... | hep-th |
0704.0067 | Order of Epitaxial Self-Assembled Quantum Dots: Linear Analysis | Epitaxial self-assembled quantum dots (SAQDs) are of interest for
nanostructured optoelectronic and electronic devices such as lasers,
photodetectors and nanoscale logic. Spatial order and size order of SAQDs are
important to the development of usable devices. It is likely that these two
types of order are strongly l... | cond-mat.mtrl-sci |
0704.0068 | A Note About the {Ki(z)} Functions | In the article [Petojevic 2006], A. Petojevi\' c verified useful properties
of the $K_{i}(z)$ functions which generalize Kurepa's [Kurepa 1971] left
factorial function. In this note, we present simplified proofs of two of these
results and we answer the open question stated in [Petojevic 2006]. Finally, we
discuss th... | math.NT math.CV |
0704.0069 | Dynamical Objects for Cohomologically Expanding Maps | The goal of this paper is to construct invariant dynamical objects for a (not
necessarily invertible) smooth self map of a compact manifold. We prove a
result that takes advantage of differences in rates of expansion in the terms
of a sheaf cohomological long exact sequence to create unique lifts of finite
dimensiona... | math.DS |
0704.0070 | Coincidence of the oscillations in the dipole transition and in the
persistent current of narrow quantum rings with two electrons | The fractional Aharonov-Bohm oscillation (FABO) of narrow quantum rings with
two electrons has been studied and has been explained in an analytical way, the
evolution of the period and amplitudes against the magnetic field can be
exactly described. Furthermore, the dipole transition of the ground state was
found to h... | cond-mat.mes-hall |
0704.0071 | Pairwise comparisons of typological profiles (of languages) | No abstract given; compares pairs of languages from World Atlas of Language
Structures.
| physics.soc-ph |
0704.0072 | The decomposition method and Maple procedure for finding first integrals
of nonlinear PDEs of any order with any number of independent variables | In present paper we propose seemingly new method for finding solutions of
some types of nonlinear PDEs in closed form. The method is based on
decomposition of nonlinear operators on sequence of operators of lower orders.
It is shown that decomposition process can be done by iterative procedure(s),
each step of which ... | math-ph math.MP |
0704.0073 | A transcendental approach to Koll\'ar's injectivity theorem | We treat Koll\'ar's injectivity theorem from the analytic (or differential
geometric) viewpoint. More precisely, we give a curvature condition which
implies Koll\'ar type cohomology injectivity theorems. Our main theorem is
formulated for a compact K\"ahler manifold, but the proof uses the space of
harmonic forms on ... | math.AG |
0704.0074 | Injective Morita contexts (revisited) | This paper is an exposition of the so-called injective Morita contexts (in
which the connecting bimodule morphisms are injective) and Morita
$\alpha$contexts (in which the connecting bimodules enjoy some local
projectivity in the sense of Zimmermann-Huisgen). Motivated by situations in
which only one trace ideal is i... | math.RA |
0704.0075 | Strong decays of charmed baryons | There has been important experimental progress in the sector of heavy baryons
in the past several years. We study the strong decays of the S-wave, P-wave,
D-wave and radially excited charmed baryons using the $^3P_0$ model. After
comparing the calculated decay pattern and total width with the available data,
we discu... | hep-ph hep-ex nucl-ex |
0704.0076 | CP violation in beauty decays | Precision tests of the Kobayashi-Maskawa model of CP violation are discussed,
pointing out possible signatures for other sources of CP violation and for new
flavor-changing operators. The current status of the most accurate tests is
summarized.
| hep-ph hep-ex |
0704.0077 | Universal Forces and the Dark Energy Problem | The Dark Energy problem is forcing us to re-examine our models and our
understanding of relativity and space-time. Here a novel idea of Fundamental
Forces is introduced. This allows us to perceive the General Theory of
Relativity and Einstein's Equation from a new pesrpective. In addition to
providing us with an impr... | physics.gen-ph |
0704.0078 | Linear perturbations of matched spacetimes: the gauge problem and
background symmetries | We present a critical review about the study of linear perturbations of
matched spacetimes including gauge problems. We analyse the freedom introduced
in the perturbed matching by the presence of background symmetries and revisit
the particular case of spherically symmetry in n-dimensions. This analysis
includes sett... | gr-qc |
0704.0079 | Operator algebras associated with unitary commutation relations | We define nonselfadjoint operator algebras with generators $L_{e_1},...,
L_{e_n}, L_{f_1},...,L_{f_m}$ subject to the unitary commutation relations of
the form \[ L_{e_i}L_{f_j} = \sum_{k,l} u_{i,j,k,l} L_{f_l}L_{e_k}\] where $u=
(u_{i,j,k,l})$ is an $nm \times nm$ unitary matrix. These algebras, which
generalise the... | math.OA |
0704.0080 | Shaping the Globular Cluster Mass Function by Stellar-Dynamical
Evaporation | We show that the globular cluster mass function (GCMF) in the Milky Way
depends on cluster half-mass density (rho_h) in the sense that the turnover
mass M_TO increases with rho_h while the width of the GCMF decreases. We argue
that this is the expected signature of the slow erosion of a mass function that
initially r... | astro-ph |
0704.0081 | Quantum Deformations of Relativistic Symmetries | We discussed quantum deformations of D=4 Lorentz and Poincare algebras. In
the case of Poincare algebra it is shown that almost all classical r-matrices
of S. Zakrzewski classification correspond to twisted deformations of Abelian
and Jordanian types. A part of twists corresponding to the r-matrices of
Zakrzewski cla... | math.QA hep-th math-ph math.MP math.RT |
0704.0082 | Matter-Wave Bright Solitons with a Finite Background in Spinor
Bose-Einstein Condensates | We investigate dynamical properties of bright solitons with a finite
background in the F=1 spinor Bose-Einstein condensate (BEC), based on an
integrable spinor model which is equivalent to the matrix nonlinear
Schr\"{o}dinger equation with a self-focusing nonlineality. We apply the
inverse scattering method formulate... | cond-mat.other cond-mat.stat-mech |
0704.0083 | Why there is something rather than nothing (out of everything)? | The path integral over Euclidean geometries for the recently suggested
density matrix of the Universe is shown to describe a microcanonical ensemble
in quantum cosmology. This ensemble corresponds to a uniform (weight one)
distribution in phase space of true physical variables, but in terms of the
observable spacetim... | hep-th |
0704.0084 | Formation of density singularities in ideal hydrodynamics of freely
cooling inelastic gases: a family of exact solutions | We employ granular hydrodynamics to investigate a paradigmatic problem of
clustering of particles in a freely cooling dilute granular gas. We consider
large-scale hydrodynamic motions where the viscosity and heat conduction can be
neglected, and one arrives at the equations of ideal gas dynamics with an
additional te... | cond-mat.soft nlin.PS physics.flu-dyn |
0704.0085 | A Universality in PP-Waves | We discuss a universality property of any covariant field theory in
space-time expanded around pp-wave backgrounds. According to this property the
space-time lagrangian density evaluated on a restricted set of field
configurations, called universal sector, turns out to be same around all the
pp-waves, even off-shell,... | hep-th |
0704.0086 | Clustering in a stochastic model of one-dimensional gas | We give a quantitative analysis of clustering in a stochastic model of
one-dimensional gas. At time zero, the gas consists of $n$ identical particles
that are randomly distributed on the real line and have zero initial speeds.
Particles begin to move under the forces of mutual attraction. When particles
collide, they... | math.PR |
0704.0087 | Approximate solutions to the Dirichlet problem for harmonic maps between
hyperbolic spaces | Our main result in this paper is the following: Given $H^m, H^n$ hyperbolic
spaces of dimensional $m$ and $n$ corresponding, and given a Holder function
$f=(s^1,...,f^{n-1}):\partial H^m\to \partial H^n$ between geometric boundaries
of $H^m$ and $H^n$. Then for each $\epsilon >0$ there exists a harmonic map
$u:H^m\to... | math.DG |
0704.0088 | Some new experimental photonic flame effect features | The results of the spectral, energetical and temporal characteristics of
radiation in the presence of the photonic flame effect are presented.
Artificial opal posed on Cu plate at the temperature of liquid nitrogen boiling
point (77 K) being irradiated by nanosecond ruby laser pulse produces long-
term luminiscence w... | physics.optics |
0704.0089 | A general approach to statistical modeling of physical laws:
nonparametric regression | Statistical modeling of experimental physical laws is based on the
probability density function of measured variables. It is expressed by
experimental data via a kernel estimator. The kernel is determined objectively
by the scattering of data during calibration of experimental setup. A physical
law, which relates mea... | physics.data-an physics.gen-ph |
0704.0090 | Real Options for Project Schedules (ROPS) | Real Options for Project Schedules (ROPS) has three recursive
sampling/optimization shells. An outer Adaptive Simulated Annealing (ASA)
optimization shell optimizes parameters of strategic Plans containing multiple
Projects containing ordered Tasks. A middle shell samples probability
distributions of durations of Tas... | cs.CE cond-mat.stat-mech cs.MS cs.NA physics.data-an |
0704.0091 | Groups with finitely many conjugacy classes and their automorphisms | We combine classical methods of combinatorial group theory with the theory of
small cancellations over relatively hyperbolic groups to construct finitely
generated torsion-free groups that have only finitely many classes of conjugate
elements. Moreover, we present several results concerning embeddings into such
group... | math.GR |
0704.0092 | Energy density for chiral lattice fermions with chemical potential | We study a recently proposed formulation of overlap fermions at finite
density. In particular we compute the energy density as a function of the
chemical potential and the temperature. It is shown that overlap fermions with
chemical potential reproduce the correct continuum behavior.
| hep-lat hep-ph |
0704.0093 | Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved
Photoemission Spectroscopy | Lattice contribution to the electronic self-energy in complex correlated
oxides is a fascinating subject that has lately stimulated lively discussions.
Expectations of electron-phonon self-energy effects for simpler materials, such
as Pd and Al, have resulted in several misconceptions in strongly correlated
oxides. H... | cond-mat.supr-con cond-mat.str-el |
0704.0094 | Timing and Lensing of the Colliding Bullet Clusters: barely enough time
and gravity to accelerate the bullet | We present semi-analytical constraint on the amount of dark matter in the
merging bullet galaxy cluster using the classical Local Group timing arguments.
We consider particle orbits in potential models which fit the lensing data.
{\it Marginally consistent} CDM models in Newtonian gravity are found with a
total mass ... | astro-ph |
0704.0095 | Geometry of Locally Compact Groups of Polynomial Growth and Shape of
Large Balls | We get asymptotics for the volume of large balls in an arbitrary locally
compact group G with polynomial growth. This is done via a study of the
geometry of G and a generalization of P. Pansu's thesis. In particular, we show
that any such G is weakly commensurable to some simply connected solvable Lie
group S, the Li... | math.GR math.DG |
0704.0096 | Much ado about 248 | In this note we present three representations of a 248-dimensional Lie
algebra, namely the algebra of Lie point symmetries admitted by a system of
five trivial ordinary differential equations each of order forty-four, that
admitted by a system of seven trivial ordinary differential equations each of
order twenty-eigh... | nlin.SI |
0704.0097 | Conformal Field Theory and Operator Algebras | We review recent progress in operator algebraic approach to conformal quantum
field theory. Our emphasis is on use of representation theory in classification
theory. This is based on a series of joint works with R. Longo.
| math-ph math.MP math.OA |
0704.0098 | Sparsely-spread CDMA - a statistical mechanics based analysis | Sparse Code Division Multiple Access (CDMA), a variation on the standard CDMA
method in which the spreading (signature) matrix contains only a relatively
small number of non-zero elements, is presented and analysed using methods of
statistical physics. The analysis provides results on the performance of
maximum likel... | cs.IT math.IT |
0704.0099 | On Ando's inequalities for convex and concave functions | For positive semidefinite matrices $A$ and $B$, Ando and Zhan proved the
inequalities $||| f(A)+f(B) ||| \ge ||| f(A+B) |||$ and $||| g(A)+g(B) ||| \le
||| g(A+B) |||$, for any unitarily invariant norm, and for any non-negative
operator monotone $f$ on $[0,\infty)$ with inverse function $g$. These
inequalities have v... | math.FA |
0704.0100 | Topology Change of Black Holes | The topological structure of the event horizon has been investigated in terms
of the Morse theory. The elementary process of topological evolution can be
understood as a handle attachment. It has been found that there are certain
constraints on the nature of black hole topological evolution: (i) There are n
kinds of ... | gr-qc |
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