corpus_id stringlengths 3 9 | arxiv_id stringlengths 9 16 | date stringdate 1989-10-26 00:00:00 2024-09-30 00:00:00 | title stringlengths 4 240 | abstract stringlengths 3 3.15k | categories listlengths 1 10 | topics listlengths 0 15 ⌀ | roles listlengths 1 4 | key_references listlengths 0 10 ⌀ | authors listlengths 1 5.28k ⌀ | citation_trajectory listlengths 14 26 ⌀ |
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119440102 | gr-qc/0501092 | 2005-01-28 | Conformal invariance and the conformal-traceless decomposition of the gravitational field | Einstein's theory of general relativity is written in terms of the variables obtained from a conformal--traceless decomposition of the spatial metric and extrinsic curvature. The determinant of the conformal metric is not restricted, so the action functional and equations of motion are invariant under conformal transfo... | [
"gr-qc"
] | null | [
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5574051 | cs/0501084 | 2005-01-28 | Towards Automated Integration of Guess and Check Programs in Answer Set Programming: A Meta-Interpreter and Applications | Answer set programming (ASP) with disjunction offers a powerful tool for declaratively representing and solving hard problems. Many NP-complete problems can be encoded in the answer set semantics of logic programs in a very concise and intuitive way, where the encoding reflects the typical "guess and check" nature of N... | [
"cs.AI"
] | null | [
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119099320 | astro-ph/0501637 | 2005-01-28 | The 3-point function in large scale structure: redshift distortions and galaxy bias | We study the behavior of the three-point correlation function xi_3 of dark matter and mock galaxies, concentrating on the effects of redshift-space distortions and the determination of galaxy bias parameters in current redshift galaxy surveys. On large scales, redshift space distortions tend to wash out slightly the co... | [
"astro-ph"
] | null | [
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18022909 | hep-th/0501233 | 2005-01-28 | Boundary Scattering in 1+1 Dimensions as an Aharanov-Bohm Effect | The boundary scattering problem in 1+1 dimensional CFT is relevant to a multitude of areas of physics, ranging from the Kondo effect in condensed matter theory to tachyon condensation in string theory. Invoking a correspondence between CFT on 1+1 dimensional manifolds with boundaries and Chern-Simons gauge theory on 2+... | [
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"name": "Petr Hořava",
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16059002 | q-bio/0501039 | 2005-01-30 | Functionality Encoded In Topology? Discovering Macroscopic Regulatory Modules from Large-Scale Protein-DNA Interaction Networks | The promise of discovering a functional blueprint of a cellular system from large-scale and high-throughput sequence and experimental data is predicated on the belief that the same top-down investigative approach that proved successful in other biological problems (e.g. DNA sequencing) will be as effective when it come... | [
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"name": "Behnam [\"Attaran\"] Rezaei",
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10921285 | cs/0501091 | 2005-01-31 | A complexity-regularized quantization approach to nonlinear dimensionality reduction | We consider the problem of nonlinear dimensionality reduction: given a training set of high-dimensional data whose ``intrinsic'' low dimension is assumed known, find a feature extraction map to low-dimensional space, a reconstruction map back to high-dimensional space, and a geometric description of the dimension-reduc... | [
"cs.IT",
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"name": "Maxim Raginsky",
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16597655 | astro-ph/0502005 | 2005-01-31 | The formation and evolution of hydrogen-deficient post-AGB white dwarfs: the emerging chemical profile and the expectations for the PG1159-DB-DQ evolutionary connection | This paper is designed to explore the formation and evolution of hydrogen-deficient post-AGB white dwarfs. To this end, we compute the complete evolution of an initially 2.7 M_sun star from the zero-age main sequence through the thermally pulsing and mass-loss phases to the white dwarf stage. Particular attention is gi... | [
"astro-ph"
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"target.author.publication_history.key_reference"
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7634056 | cond-mat/0501739 | 2005-01-31 | Decoupling of self-diffusion and structural relaxation during a fragile-to-strong crossover in a kinetically constrained lattice gas | We present an interpolated kinetically constrained lattice gas model which exhibits a transition from fragile to strong supercooled liquid behavior. We find non-monotonic decoupling that is due to this crossover and is seen in experiment. | [
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"name": "Juan [\"P.\"] Garrahan",
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119400732 | quant-ph/0502013 | 2005-02-01 | Exact Entanglement Cost of Multi-Qubit Bound Entangled States | We report the exact entanglement cost of a class of multiqubit bound entangled states, computed in the context of a universal model for multipartite state preparation. The exact amount of entanglement needed to prepare such states are determined by first obtaining lower bounds using a cut-set approach, and then providi... | [
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"name": "Vwani [\"P.\"] Roychowdhury",
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108284187 | quant-ph/0502017 | 2005-02-01 | Entanglement and decoherence in spin gases | We study the dynamics of entanglement in spin gases. A spin gas consists of a (large) number of interacting particles whose random motion is described classically while their internal degrees of freedom are described quantum-mechanically. We determine the entanglement that occurs naturally in such systems for specific ... | [
"quant-ph"
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"author_id": "l hartmann_1",
"name": "Lorenz Hartmann",
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8519249 | math/0502037 | 2005-02-01 | Roots and polynomials as homeomorphic spaces | We provide a unified, elementary, topological approach to the classical results stating the continuity of the complex roots of a polynomial with respect to its coefficients, and the continuity of the coefficients with respect to the roots. In fact, endowing the space of monic polynomials of a fixed degree $n$ and the s... | [
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119686583 | cond-mat/0502015 | 2005-02-01 | Asymptotics of Toeplitz Determinants and the Emptiness Formation Probability for the XY Spin Chain | We study an asymptotic behavior of a special correlator known as the Emptiness Formation Probability (EFP) for the one-dimensional anisotropic XY spin-1/2 chain in a transverse magnetic field. This correlator is essentially the probability of formation of a ferromagnetic string of length $n$ in the antiferromagnetic gr... | [
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"author_id": "f franchini_1",
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"author_id": "a abanov_1",
"name": "Alexander [\"G.\"] Abanov",
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119032441 | cond-mat/0502032 | 2005-02-01 | Bistable Clustering in Driven Granular Mixtures | The behavior of a bidisperse inelastic gas vertically shaken in a compartmentalized container is investigated using two different approaches: the first is a mean-field dynamical model, which treats the number of particles in the two compartments and the associated kinetic temperatures in a self-consistent fashion; the ... | [
"cond-mat.stat-mech"
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{
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"author_id": "d paolotti_1",
"name": "Daniela Paolotti",
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27131901 | cond-mat/0502016 | 2005-02-01 | The Geometrical Structure of Disordered Sphere Packings | The three dimensional structure of large packings of monosized spheres with volume fractions ranging between 0.58 and 0.64 has been studied with X-ray Computed Tomography. We search for signatures of organization, we classify local arrangements and we explore the effects of local geometrical constrains on the global pa... | [
"cond-mat.soft"
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{
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"name": "Mohammad Saadatfar",
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12490316 | cond-mat/0502018 | 2005-02-01 | Exploring Hydrodynamic Closures for the Lid-driven Micro-cavity | A minimal kinetic model is used to study analytically and numerically flows at a micrometer scale. Using the lid-driven microcavity as an illustrative example, the interplay between kinetics and hydrodynamics is quantitatively visualized. The validity of various theories of non-equilibrium thermodynamics of flowing sys... | [
"cond-mat.stat-mech"
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{
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"name": "Christos [\"E.\"] Frouzakis",
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"... | null |
117087075 | math/0502021 | 2005-02-01 | On the uniform convexity of L^p | We present a short, direct proof of the uniform convexity of L^p spaces for 1<p<\infty. | [
"math.FA"
] | null | [
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] | null | null | null |
119347419 | hep-th/0502020 | 2005-02-01 | Constrained Perturbative Expansion of the DGP Model | We address the vDVZ discontinuity of the 5D DGP model which consists of a 3-brane residing in a flat, infinite-volume bulk. Following a suggestion by Gabadadze [hep-th/0403161], we implement a constrained perturbative expansion parametrized by brane gauge parameters. We explore the parameter space and show that the DGP... | [
"hep-th"
] | null | [
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{
"author_id": "c middleton_1",
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"author_id": "g siopsis_1",
"name": "George Siopsis",
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119494625 | hep-ph/0502005 | 2005-02-01 | Physics Beyond the Standard Model: Exotic Leptons and Black Holes at Future Colliders | The Standard Model of particle physics has been remarkably successful in describing present experimental results. However, it is assumed to be only a low-energy effective theory which will break down at higher energy scales, theoretically motivated to be around 1 TeV. There are a variety of proposed models of new physi... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
46516968 | cond-mat/0502063 | 2005-02-02 | Multiple Scale-Free Structures in Complex Ad-Hoc Networks | This paper develops a framework for analyzing and designing dynamic networks comprising different classes of nodes that coexist and interact in one shared environment. We consider {\em ad hoc} (i.e., nodes can leave the network unannounced, and no node has any global knowledge about the class identities of other nodes)... | [
"cond-mat.dis-nn"
] | null | [
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] | [] | [
{
"author_id": "n sarshar_1",
"name": "Nima Sarshar",
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{
"author_id": "v roychowdhury_1",
"name": "Vwani [\"P.\"] Roychowdhury",
"publication_history": null,
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45434347 | quant-ph/0502022 | 2005-02-02 | Two Slightly-Entangled NP-Complete Problems | We perform a mathematical analysis of the classical computational complexity of two genuine quantum-mechanical problems, which are inspired in the calculation of the expected magnetizations and the entanglement between subsystems for a quantum spin system. These problems, which we respectively call SES and SESSP, are s... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r orús_1",
"name": "Román Orús",
"publication_history": null,
"h_index": null,
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}
] | null |
117273046 | astro-ph/0502048 | 2005-02-02 | Coronal Electron Scattering of Hot Spot Emission Around Black Holes | Using a Monte Carlo ray-tracing code in full general relativity, we calculate the transport of photons from a geodesic hot spot emitter through a corona of hot electrons surrounding a black hole. Each photon is followed until it is either captured by the black hole or is detected by a distant observer. The source is as... | [
"astro-ph"
] | null | [
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{
"author_id": "j schnittman_1",
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"publication_history": null,
"h_index": null,
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}
] | null |
399710 | astro-ph/0502058 | 2005-02-03 | A Distinct Structure Inside the Galactic Bar | We present the result of a near-infrared (J H Ks) survey along the Galactic plane, -10.5deg < l < +10.5deg and b=+1.0deg, with the IRSF 1.4m telescope and the SIRIUS camera. Ks vs. H-Ks color-magnitude diagrams reveal a well-defined population of red clump (RC) stars whose apparent magnitude peak changes continuously a... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119441269 | hep-th/0502048 | 2005-02-03 | H(3)+ correlators from Liouville theory | We prove that arbitrary correlation functions of the H(3)+ model on a sphere have a simple expression in terms of Liouville theory correlation functions. This is based on the correspondence between the KZ and BPZ equations, and on relations between the structure constants of Liouville theory and the H(3)+ model. In the... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8960223 | quant-ph/0502030 | 2005-02-04 | Oblivious transfer and quantum non-locality | Oblivious transfer, a central functionality in modern cryptography, allows a party to send two one-bit messages to another who can choose one of them to read, remaining ignorant about the other, whereas the sender does not learn the receiver's choice. Oblivious transfer the security of which is information-theoretic fo... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
37377109 | nlin/0502008 | 2005-02-04 | Formation of Multifractal Population Patterns from Reproductive Growth and Local Resettlement | We consider the general character of the spatial distribution of a population that grows through reproduction and subsequent local resettlement of new population members. We present several simple one and two-dimensional point placement models to illustrate possible generic behavior of these distributions. We show, num... | [
"nlin.PS"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j ozik_1",
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{
"author_id": "b hunt_1",
"name": "Brian [\"R.\"] Hunt",
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... | null |
119358418 | cond-mat/0502129 | 2005-02-04 | Optimization by Quantum Annealing: Lessons from Simple Cases | This paper investigates the basic behavior and performance of simulated quantum annealing (QA) in comparison with classical annealing (CA). Three simple one dimensional case study systems are considered, namely a parabolic well, a double well, and a curved washboard. The time dependent Schr\"odinger evolution in either... | [
"cond-mat.other",
"cond-mat.dis-nn",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
3915057 | cond-mat/0502120 | 2005-02-04 | Static and dynamic lengthscales in a simple glassy plaquette model | We study static and dynamic spatial correlations in a two-dimensional spin model with four-body plaquette interactions and standard Glauber dynamics by means of analytic arguments and Monte Carlo simulations. We study in detail the dynamical behaviour which becomes glassy at low temperatures due to the emergence of eff... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r jack_1",
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{
"author_id": "l berthier_1",
"name": "Ludovic Berthier",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
14812707 | physics/0502021 | 2005-02-04 | First-Principles Method for Open Electronic Systems | We prove the existence of the exact density-functional theory formalism for open electronic systems, and develop subsequently an exact time-dependent density-functional theory (TDDFT) formulation for the dynamic response. The TDDFT formulation depends in principle only on the electron density of the reduced system. Bas... | [
"physics.chem-ph",
"physics.comp-ph"
] | null | [
"target.author.publication_history"
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{
"author_id": "x zheng_75",
"name": "Xiao Zheng",
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{
"author_id": "g chen_44",
"name": "Guanhua Chen",
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3205247 | cs/0502034 | 2005-02-06 | Multiobjective hBOA, Clustering, and Scalability | This paper describes a scalable algorithm for solving multiobjective decomposable problems by combining the hierarchical Bayesian optimization algorithm (hBOA) with the nondominated sorting genetic algorithm (NSGA-II) and clustering in the objective space. It is first argued that for good scalability, clustering or som... | [
"cs.NE",
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2202874 | cs/0502041 | 2005-02-07 | Logarithmic Lower Bounds in the Cell-Probe Model | We develop a new technique for proving cell-probe lower bounds on dynamic data structures. This technique enables us to prove an amortized randomized Omega(lg n) lower bound per operation for several data structural problems on n elements, including partial sums, dynamic connectivity among disjoint paths (or a forest o... | [
"cs.DS",
"cs.CC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
55998197 | quant-ph/0502043 | 2005-02-07 | Entanglement of zero angular momentum mixtures and black hole entropy | We calculate the entanglement of formation and the entanglement of distillation for arbitrary mixtures of the zero spin states on an arbitrary-dimensional bipartite Hilbert space. Such states are relevant to quantum black holes and to decoherence-free subspaces based communication. The two measures of entanglement are ... | [
"quant-ph"
] | null | [
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{
"author_id": "e livine_1",
"name": "Etera [\"R.\"] Livine",
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{
"author_id": "d terno_1",
"name": "Daniel [\"R.\"] Terno",
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13885443 | hep-th/0502073 | 2005-02-07 | D-branes in Little String Theory | We analyze in detail the D-branes in the near-horizon limit of NS5-branes on a circle, the holographic dual of little string theory in a double scaling limit. We emphasize their geometry in the background of the NS5-branes and show the relation with D-branes in coset models. The exact one-point function giving the coup... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16824104 | cond-mat/0502197 | 2005-02-08 | Microwave spectroscopy on magnetization reversal dynamics of nanomagnets with electronic detection | We demonstrate a detection method for microwave spectroscopy on magnetization reversal dynamics of nanomagnets. Measurement of the nanomagnet anisotropic magnetoresistance was used for probing how magnetization reversal is resonantly enhanced by microwave magnetic fields. We used Co strips of 2 um x 130 nm x 40 nm, and... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j grollier_1",
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"author_id": "m costache_0",
"name": "Marius [\"Vasile\"] Costache",
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"nu... | null |
14190892 | hep-ph/0502075 | 2005-02-08 | A Supersymmetric Explanation of the Excess of Higgs-Like Events at LEP | Searches for the Standard Model Higgs boson by the four LEP experiments found excess events in two mass ranges: a 2.3 sigma excess around 98 GeV, and an 1.7 sigma excess around 115 GeV. The latter has been discussed widely in the literature, but the former has attracted little attention so far. In this paper I explore ... | [
"hep-ph",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
703214 | astro-ph/0502164 | 2005-02-08 | Particle Swarm Optimization: An efficient method for tracing periodic orbits in 3D galactic potentials | We propose the Particle Swarm Optimization (PSO) as an alternative method for locating periodic orbits in a three--dimensional (3D) model of barred galaxies. We develop an appropriate scheme that transforms the problem of finding periodic orbits into the problem of detecting global minimizers of a function, which is de... | [
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"math.NA",
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{
"author_id": "c skokos_1",
"name": "Charalampos Skokos",
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{
"author_id": "k parsopoulos_0",
"name": "Konstantinos [\"E.\"] Parsopoulos",
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1568193 | hep-ph/0502079 | 2005-02-08 | Comparison of SUSY spectrum calculations and impact on the relic density constraints from WMAP | We compare results of four public supersymmetric (SUSY) spectrum codes, Isajet, Softsusy, Spheno and Suspect to estimate the present-day uncertainty in the calculation of the relic density of dark matter in mSUGRA models. We find that even for mass differences of about 1% the spread in the obtained relic densities can ... | [
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"astro-ph"
] | null | [
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{
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{
"author_id": "s kraml_1",
"name": "Sabine Kraml",
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"num_papers": null... | null |
58885 | cond-mat/0502205 | 2005-02-08 | Degree Distribution of Competition-Induced Preferential Attachment Graphs | We introduce a family of one-dimensional geometric growth models, constructed iteratively by locally optimizing the tradeoffs between two competing metrics, and show that this family is equivalent to a family of preferential attachment random graph models with upper cutoffs. This is the first explanation of how prefere... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"cs.NI",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17250505 | gr-qc/0502028 | 2005-02-08 | Gravitational perturbations of the Schwarzschild spacetime: A practical covariant and gauge-invariant formalism | We present a formalism to study the metric perturbations of the Schwarzschild spacetime. The formalism is gauge invariant, and it is also covariant under two-dimensional coordinate transformations that leave the angular coordinates unchanged. The formalism is applied to the typical problem of calculating the gravitatio... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15793537 | astro-ph/0502183 | 2005-02-09 | Chandra and XMM-Newton Observations of NGC 6251 | We present new X-ray observations of the nucleus, jet and extended emission of the nearby radio galaxy NGC 6251 using the Chandra/ACIS-S camera, together with a reanalysis of archival Chandra/ACIS-I and XMM-Newton/EPIC data. We find that the nuclear X-ray spectrum is well-fitted with an absorbed power-law, and that the... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16667852 | astro-ph/0502189 | 2005-02-09 | The Substellar Mass Function: A Bayesian Approach | We report our efforts to constrain the form of the low-mass star and brown dwarf mass function via Bayesian inference. Recent surveys of M, L, and T dwarfs in the local solar neighborhood are an essential component of our study. Uncertainties in the age distribution of local field stars make reliable inference complica... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15500978 | astro-ph/0502204 | 2005-02-09 | The Mass Assembly Histories of Galaxies of Various Morphologies in the GOODS Fields | We present an analysis of the growth of stellar mass with cosmic time partitioned according to galaxy morphology. Using a well-defined catalog of 2150 galaxies based, in part, on archival data in the GOODS fields, we assign morphological types in three broad classes (Ellipticals, Spirals, Peculiar/Irregulars) to a limi... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6715687 | astro-ph/0502196 | 2005-02-09 | New constraints on SN Ia progenitor models | We use the StarTrack population synthesis code to discuss potential progenitor models of SN Ia: single degenerate scenario, semi-detached double white dwarf binary and double degenerate scenario. Using the most recent calculations of accretion onto white dwarfs, we consider SN Ia explosions of various white dwarfs in b... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17426347 | nlin/0502016 | 2005-02-09 | An equation-free approach to coupled oscillator dynamics: the Kuramoto model example | We present an equation-free multi-scale approach to the computational study of the collective dynamics of the Kuramoto model [{\it Chemical Oscillations, Waves, and Turbulence}, Springer-Verlag (1984)], a prototype model for coupled oscillator populations. Our study takes place in a reduced phase space of coarse-graine... | [
"nlin.AO",
"nlin.PS"
] | null | [
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{
"corpus_id": "9087773",
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}
] | [
{
"author_id": "s moon_4",
"name": "Sung [\"Joon\"] Moon",
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},
{
"author_id": "i kevrekidis_1",
"name": "Ioannis [\"G.\"] Kevrekidis",
"publication_history": null,
"h_index": null,
... | null |
15753915 | hep-ph/0502096 | 2005-02-10 | Little-Higgs corrections to precision data after LEP2 | We reconsider little-Higgs corrections to precision data. In five models with global symmetries SU(5), SU(6), SO(9) corrections are (although not explicitly) of `universal' type. We get simple expressions for the Shat, That, W, Y parameters, which summarize all effects. In all models Shat > (W+Y)/2 and That, W, Y\ge 0.... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16572969 | astro-ph/0502223 | 2005-02-10 | Evidence for Primordial Clustering Around the QSO SDSS J1030+0524 at z=6.28 | We present tentative evidence for primordial clustering, manifested as an excess of color-selected objects in the field of the QSO SDSS J1030+0524 at redshift z=6.28. We have selected objects red in i_{775}-z_{850} on the basis of Hubble Space Telescope Advanced Camera for Surveys imaging of a field centered on the QSO... | [
"astro-ph"
] | null | [
"target.author.publication_history"
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{
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{
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{
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] | [
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{
"author_id": "s djorgovski_1",
"name": "S. [\"George\"] Djorgovski",
"publication_history": null,
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... | null |
17616941 | hep-ph/0502095 | 2005-02-10 | Supersymmetry and precision data after LEP2 | We study one loop supersymmetric corrections to precision observables. Adding LEP2 e ebar --> f fbar cross sections to the data-set removes previous hints for SUSY and the resulting constraints are in some cases stronger than direct bounds on sparticle masses. We consider specific models: split SUSY, CMSSM, gauge media... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15512308 | math/0502217 | 2005-02-10 | Radial Time-Frequency Analysis and Embeddings of Radial Modulation Spaces | In this paper we construct frames of Gabor type for the space $L^2_{rad}(\R^d)$ of radial $L^2$-functions, and more generally, for subspaces of modulation spaces consisting of radial distributions. Hereby, each frame element itself is a radial function. This construction is based on a generalization of the so called Fe... | [
"math.FA"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h rauhut_1",
"name": "Holger Rauhut",
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"h_index": null,
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}
] | null |
4864253 | quant-ph/0502070 | 2005-02-11 | A geometric approach to quantum circuit lower bounds | What is the minimal size quantum circuit required to exactly implement a specified n-qubit unitary operation, U, without the use of ancilla qubits? We show that a lower bound on the minimal size is provided by the length of the minimal geodesic between U and the identity, I, where length is defined by a suitable Finsle... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12330283 | astro-ph/0502244 | 2005-02-11 | Neutrinos: the Key to UHE Cosmic Rays | Observations of ultrahigh energy cosmic rays (UHECR) do not uniquely determine both the injection spectrum and the evolution model for UHECR sources - primarily because interactions during propagation obscure the early Universe from direct observation. Detection of neutrinos produced in those same interactions, coupled... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2536130 | cs/0502056 | 2005-02-11 | Co-Authorship Networks in the Digital Library Research Community | The field of digital libraries (DLs) coalesced in 1994: the first digital library conferences were held that year, awareness of the World Wide Web was accelerating, and the National Science Foundation awarded $24 Million (U.S.) for the Digital Library Initiative (DLI). In this paper we examine the state of the DL domai... | [
"cs.DL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
846579 | physics/0502059 | 2005-02-11 | An assessment of the resolution limitation due to radiation-damage in x-ray diffraction microscopy | X-ray diffraction microscopy (XDM) is a new form of x-ray imaging that is being practiced at several third-generation synchrotron-radiation x-ray facilities. Although only five years have elapsed since the technique was first introduced, it has made rapid progress in demonstrating high-resolution threedimensional imagi... | [
"physics.optics",
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14006564 | cond-mat/0502285 | 2005-02-11 | Stretched--exponential relaxation in arrays of coupled rotators | We consider the non--equilibrium dynamics of a chain of classical rotators coupled at its edges to an external reservoir at zero temperature. We find that the energy is released in a strongly discontinuous fashion, with sudden jumps alternated with long stretches during which dissipation is extremely weak. The jumps ma... | [
"cond-mat.other"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m eleftheriou_0",
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{
"author_id": "s lepri_2",
"name": "Stefano Lepri",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
15441909 | math/0502252 | 2005-02-12 | An Orthogonal Discrete Auditory Transform | An orthogonal discrete auditory transform (ODAT) from sound signal to spectrum is constructed by combining the auditory spreading matrix of Schroeder et al and the time one map of a discrete nonlocal Schr\"odinger equation. Thanks to the dispersive smoothing property of the Schr\"odinger evolution, ODAT spectrum is smo... | [
"math.NA"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j xin_1",
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{
"author_id": "y qi_15",
"name": "Yingyong Qi",
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"h_index": null,
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"num_citatio... | null |
14021634 | quant-ph/0502072 | 2005-02-12 | NP-complete Problems and Physical Reality | Can NP-complete problems be solved efficiently in the physical universe? I survey proposals including soap bubbles, protein folding, quantum computing, quantum advice, quantum adiabatic algorithms, quantum-mechanical nonlinearities, hidden variables, relativistic time dilation, analog computing, Malament-Hogarth spacet... | [
"quant-ph",
"cs.CC",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7217979 | physics/0502066 | 2005-02-13 | Structure and Evolution of the World Trade Network | The \emph{World Trade Web} (WTW), the network defined by the international import/export trade relationships, has been recently shown to display some important topological properties which are tightly related to the Gross Domestic Product of world countries. While our previous analysis focused on the static, undirected... | [
"physics.soc-ph",
"cond-mat.dis-nn",
"nlin.AO",
"q-fin.GN"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
41467286 | quant-ph/0502088 | 2005-02-14 | Mathematical framework for simulation of quantum fields in complex interferometers using the two-photon formalism | We present a mathematical framework for simulation of optical fields in complex gravitational-wave interferometers. The simulation framework uses the two-photon formalism for optical fields and includes radiation pressure effects, an important addition required for simulating signal and noise fields in next-generation ... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7004865 | cond-mat/0502333 | 2005-02-14 | Incorporation of excluded volume correlations into Poisson-Boltzmann theory | We investigate the effect of excluded volume interactions on the electrolyte distribution around a charged macroion. First, we introduce a criterion for determining when hard-core effects should be taken into account beyond standard mean field Poisson-Boltzmann (PB) theory. Next, we demonstrate that several commonly pr... | [
"cond-mat.soft",
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] | null | [
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] | [] | [
{
"author_id": "d antypov_1",
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},
{
"author_id": "m barbosa_2",
"name": "Marcia [\"C.\"] Barbosa",
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7464309 | astro-ph/0502243 | 2005-02-14 | Dark Energy Constraints from the CTIO Lensing Survey | We perform a cosmological parameter analysis of the 75 square degree CTIO lensing survey in conjunction with CMB and Type Ia supernovae data. For Lambda CDM cosmologies, we find that the amplitude of the power spectrum at low redshift is given by sigma_8 = 0.81 (+0.15,-0.10, 95% c.l.), where the error bar includes both... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6004609 | cond-mat/0502336 | 2005-02-14 | Achieving transparency with plasmonic coatings | The possibility of using plasmonic covers to drastically reduce the total scattering cross section of spherical and cylindrical objects is discussed. While it is intuitively expected that increasing the physical size of an object may lead to an increase in its overall scattering cross section, here we see how a proper ... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14492165 | astro-ph/0502301 | 2005-02-15 | Fast identification of transits from light-curves | We present an algorithm that allows fast and efficient detection of transits, including planetary transits, from light-curves. The method is based on building an ensemble of fiducial models and compressing the data using the MOPED algorithm. We describe the method and demonstrate its efficiency by finding planet-like t... | [
"astro-ph"
] | null | [
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] | [
{
"corpus_id": "10865449",
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},
{
"corpus_id": "53610157",
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}
] | [
{
"author_id": "p protopapas_1",
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},
{
"author_id": "r jimenez_1",
"name": "Raul Jimenez",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
1036823 | math/0502299 | 2005-02-15 | Geometric approach to error correcting codes and reconstruction of signals | We develop an approach through geometric functional analysis to error correcting codes and to reconstruction of signals from few linear measurements. An error correcting code encodes an n-letter word x into an m-letter word y in such a way that x can be decoded correctly when any r letters of y are corrupted. We prove ... | [
"math.FA",
"math.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119521761 | astro-ph/0502296 | 2005-02-15 | The mass of the black hole in 3C 273 | In this paper we apply the reverberation method to determine the mass of the black hole in 3C273 from the Ly a and C iv emission lines using archival IUE observations. Following the standard assumptions of the method, we find a maximum-likelihood estimate of the mass of 6.59 10^9 Mo, with a 1 sigma confidence interval ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "16308360",
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}
] | [
{
"author_id": "s paltani_1",
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{
"author_id": "m turler_1",
"name": "Marc Turler",
"publication_history": null,
"h_index": null,
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... | null |
16350399 | hep-th/0502138 | 2005-02-15 | Fibration structures in toric Calabi-Yau Fourfolds | In the context of string dualities, fibration structures of Calabi-Yau manifolds play a prominent role. In particular, elliptic and K3 fibered Calabi-Yau fourfolds are important for dualities between string compactifications with four flat space-time dimensions. A natural framework for studying explicit examples of suc... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1597457 | astro-ph/0502282 | 2005-02-15 | A semi-relativistic approach to the circular restricted three body problem and a numerical experiment around the 3:2 resonance | A Hamiltonian that approaches the study of the three-body problem in general relativity is obtained. We use it to study the relativistic version of the circular restricted three-body problem in which the first body is the heaviest and the third body is a test-particle. We focus on the orbits around the 3:2 resonance. W... | [
"astro-ph",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16760357 | astro-ph/0502287 | 2005-02-15 | Dust Growth and Settling in Protoplanetary Disks and Disk Spectral Energy Distributions. I. Laminar Disks | Dust growth and settling considerably affect the spectral energy distributions (SEDs) of protoplanetary disks. We investigated dust growth and settling in protoplanetary disks through numerical simulations to examine time-evolution of the disk optical thickness and SEDs. In the present paper, we considered laminar disk... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18823515 | math/0502317 | 2005-02-15 | An adaptive scheme for the approximation of dissipative systems | We propose a new scheme for the long time approximation of a diffusion when the drift vector field is not globally Lipschitz. Under this assumption, regular explicit Euler scheme --with constant or decreasing step-- may explode and implicit Euler scheme are CPU-time expensive. The algorithm we introduce is explicit and... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12605120 | math/0502327 | 2005-02-15 | Decoding by Linear Programming | This paper considers the classical error correcting problem which is frequently discussed in coding theory. We wish to recover an input vector $f \in \R^n$ from corrupted measurements $y = A f + e$. Here, $A$ is an $m$ by $n$ (coding) matrix and $e$ is an arbitrary and unknown vector of errors. Is it possible to recove... | [
"math.MG",
"cs.CR"
] | null | [
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] | [
{
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{
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] | [
{
"author_id": "e candès_1",
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{
"author_id": "t tao_10",
"name": "Terence Tao",
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"num_papers": nu... | null |
36868720 | astro-ph/0502330 | 2005-02-16 | CMB observations from the CBI and VSA: A comparison of coincident maps and parameter estimation methods | We present coincident observations of the Cosmic Microwave Background (CMB) from the Very Small Array (VSA) and Cosmic Background Imager (CBI) telescopes. The consistency of the full datasets is tested in the map plane and the Fourier plane, prior to the usual compression of CMB data into flat bandpowers. Of the three ... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "5998639",
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}
] | [
{
"author_id": "n rajguru_1",
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{
"author_id": "s myers_1",
"name": "Steven [\"T.\"] Myers",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
55546369 | cond-mat/0502395 | 2005-02-16 | An experimental test of the Jarzynski equality in a mechanical experiment | We have experimentally checked the Jarzynski equality and the Crooks relation on the thermal fluctuations of a macroscopic mechanical oscillator in contact with a heat reservoir. We found that, independently of the time scale and amplitude of the driving force, both relations are satisfied. These results give credit, a... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10036371 | cond-mat/0502418 | 2005-02-17 | Efficient tunable generic model for fluid bilayer membranes | We present a model for the efficient simulation of generic bilayer membranes. Individual lipids are represented by one head- and two tail-beads. By means of simple pair potentials these robustly self-assemble to a fluid bilayer state over a wide range of parameters, without the need for an explicit solvent. The model s... | [
"cond-mat.soft",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119445676 | quant-ph/0502106 | 2005-02-17 | Quantum Channels with Memory | We present a general model for quantum channels with memory, and show that it is sufficiently general to encompass all causal automata: any quantum process in which outputs up to some time t do not depend on inputs at times t' > t can be decomposed into a concatenated memory channel. We then examine and present differe... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17461119 | quant-ph/0502107 | 2005-02-17 | Single Qubit Quantum Secret Sharing | We present a simple and practical protocol for the solution of a secure multiparty communication task, the secret sharing, and its experimental realization. In this protocol, a secret message is split among several parties in a way that its reconstruction require the collaboration of the participating parties. In the p... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1106998 | cs/0502076 | 2005-02-17 | Learning nonsingular phylogenies and hidden Markov models | In this paper we study the problem of learning phylogenies and hidden Markov models. We call a Markov model nonsingular if all transition matrices have determinants bounded away from 0 (and 1). We highlight the role of the nonsingularity condition for the learning problem. Learning hidden Markov models without the nons... | [
"cs.LG",
"cs.CE",
"math.PR",
"math.ST",
"q-bio.PE",
"stat.TH"
] | null | [
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{
"author_id": "e mossel_1",
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{
"author_id": "s roch_1",
"name": "Sébastien Roch",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
8926988 | cond-mat/0502419 | 2005-02-17 | On the nature of surface roughness with application to contact mechanics, sealing, rubber friction and adhesion | Surface roughness has a huge impact on many important phenomena. The most important property of rough surfaces is the surface roughness power spectrum C(q). We present surface roughness power spectra of many surfaces of practical importance, obtained from the surface height profile measured using optical methods and th... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
51384 | cs/0502077 | 2005-02-18 | On the Achievable Information Rates of Finite-State Input Two-Dimensional Channels with Memory | The achievable information rate of finite-state input two-dimensional (2-D) channels with memory is an open problem, which is relevant, e.g., for inter-symbol-interference (ISI) channels and cellular multiple-access channels. We propose a method for simulation-based computation of such information rates. We first draw ... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "o shental_1",
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{
"author_id": "n shental_1",
"name": "Noam Shental",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
18567525 | cond-mat/0502465 | 2005-02-18 | Accuracy of ab initio methods in predicting the crystal structures of metals: review of 80 binary alloys | Predicting and characterizing the crystal structure of materials is a key problem in materials research and development. We report the results of ab initio LDA/GGA computations for the following systems: AgAu, AgCd, AgMg, AgMo*, AgNa, AgNb*, AgPd, AgRh*, AgRu*, AgTc*, AgTi, AgY, AgZr, AlSc, AuCd, AuMo*, AuNb, AuPd, AuP... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s curtarolo_1",
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{
"author_id": "d morgan_1",
"name": "Dane [\"D.\"] Morgan",
"publication_history": null,
"h_index": null,
"num_pape... | null |
16624208 | hep-th/0502188 | 2005-02-21 | Finite size effects in ferromagnetic spin chains and quantum corrections to classical strings | N=4 supersymmetric Yang-Mills operators carrying large charges are dual to semiclassical strings in AdS_5xS^5. The spectrum of anomalous dimensions of very large operators has been calculated solving the Bethe ansatz equations in the thermodynamic limit, and matched to energies of string solitons. We have considered fi... | [
"hep-th",
"cond-mat.stat-mech"
] | null | [
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] | [
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{
"corpus_id": "16184987",
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{
"corpus_id": "13977651",
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}
... | [
{
"author_id": "r hernández_2",
"name": "Rafael Hernández",
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"num_citations": null
},
{
"author_id": "e lopez_4",
"name": "Esperanza Lopez",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
14609431 | cond-mat/0502498 | 2005-02-21 | New observations regarding deterministic, time reversible thermostats and Gauss's principle of least constraint | Deterministic thermostats are frequently employed in non-equilibrium molecular dynamics simulations in order to remove the heat produced irreversibly over the course of such simulations. The simplest thermostat is the Gaussian thermostat, which satisfies Gauss's principle of least constraint and fixes the peculiar kine... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119061432 | astro-ph/0502416 | 2005-02-21 | GEMS: The Size Evolution of Disk Galaxies | We combine HST imaging from the GEMS survey with photometric redshifts from COMBO-17 to explore the evolution of disk-dominated galaxies since z<1.1. The sample is comprised of all GEMS galaxies with Sersic indices n<2.5, derived from fits to the galaxy images. We account fully for selection effects through careful ana... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "m barden_1",
"name": "Marco Barden",
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},
{
"author_id": "h rix_1",
"name": "H-W. Rix",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_cit... | null |
2736290 | cond-mat/0502509 | 2005-02-21 | Topology regulates pattern formation capacity of binary cellular automata on graphs | We study the effect of topology variation on the dynamic behavior of a system with local update rules. We implement one-dimensional binary cellular automata on graphs with various topologies by formulating two sets of degree-dependent rules, each containing a single parameter. We observe that changes in graph topology ... | [
"cond-mat.stat-mech",
"nlin.CG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117885907 | cond-mat/0502511 | 2005-02-21 | An invariance property of kernel based predictors | We consider kernel based learning methods for regression and analyze what happens to the risk minimizer when new variables, statistically independent of input and target variables, are added to the set of input variables; this problem arises, for example, in the detection of causality relations between two time series.... | [
"cond-mat.dis-nn",
"physics.data-an"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "n ancona_2",
"name": "Nicola Ancona",
"publication_history": null,
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"num_papers": null,
"num_citations": null
},
{
"author_id": "s stramaglia_1",
"name": "Sebastiano Stramaglia",
"publication_history": null,
"h_index": null,
"num_papers... | null |
59503984 | cond-mat/0502471 | 2005-02-21 | Linking physics and algorithms in the random-field Ising model | The energy landscape for the random-field Ising model (RFIM) is complex, yet algorithms such as the push-relabel algorithm exist for computing the exact ground state of an RFIM sample in time polynomial in the sample volume. Simulations were carried out to investigate the scaling properties of the push-relabel algorith... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119352298 | cond-mat/0502522 | 2005-02-22 | Fabrication and superconductivity of NaxTaS2 crystals | In this paper we report the growth and superconductivity of $Na_xTaS_2$ crystals. The structural data deduced from X-ray diffraction pattern shows that the sample has the same structure as $2H-TaS_2$. A series of crystals with different superconducting transition temperatures ($T_c$) ranging from 2.5 K to 4.4 K were ob... | [
"cond-mat.supr-con",
"cond-mat.str-el"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
273893 | hep-ph/0502203 | 2005-02-22 | QCD Predictions for Charm and Bottom Production at RHIC | We make up-to-date QCD predictions for open charm and bottom production at RHIC in nucleon-nucleon collisions at \sqrt{S} = 200 GeV. We also calculate the electron spectrum resulting from heavy flavor decays to allow direct comparison to the data. A rigorous benchmark, including the theoretical uncertainties, is establ... | [
"hep-ph",
"nucl-ex",
"nucl-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17364158 | math-ph/0502043 | 2005-02-22 | On the averages of characteristic polynomials from classical groups | We provide an elementary and self-contained derivation of formulae for products and ratios of characteristic polynomials from classical groups using classical results due to Weyl and Littlewood. | [
"math-ph",
"math.MP",
"math.NT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119568239 | math/0502463 | 2005-02-22 | Sign balance for finite groups of Lie type | A product formula for the parity generating function of the number of 1's in invertible matrices over Z_2 is given. The computation is based on algebraic tools such as the Bruhat decomposition. The same technique is used to obtain a parity generating function also for symplectic matrices over Z_2. We present also a gen... | [
"math.CO"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "14363663",
"num_citations": null
}
] | [
{
"author_id": "y cherniavsky_1",
"name": "Yonah Cherniavsky",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "e bagno_1",
"name": "Eli Bagno",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
15261726 | cond-mat/0502556 | 2005-02-23 | The two dimensional XY model at the transition temperature: A high precision Monte Carlo study | We study the classical XY (plane rotator) model at the Kosterlitz-Thouless phase transition. We simulate the model using the single cluster algorithm on square lattices of a linear size up to L=2048.We derive the finite size behaviour of the second moment correlation length over the lattice size xi_{2nd}/L at the trans... | [
"cond-mat.stat-mech",
"hep-lat"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16842964 | q-bio/0502030 | 2005-02-23 | Transient Information Flow in a Network of Excitatory and Inhibitory Model Neurons: Role of Noise and Signal Autocorrelation | We investigate the performance of sparsely-connected networks of integrate-and-fire neurons for ultra-short term information processing. We exploit the fact that the population activity of networks with balanced excitation and inhibition can switch from an oscillatory firing regime to a state of asynchronous irregular ... | [
"q-bio.NC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j mayor_1",
"name": "Julien Mayor",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "w gerstner_1",
"name": "Wulfram Gerstner",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
604593 | q-bio/0502035 | 2005-02-23 | Functional cartography of complex metabolic networks | High-throughput techniques are leading to an explosive growth in the size of biological databases and creating the opportunity to revolutionize our understanding of life and disease. Interpretation of these data remains, however, a major scientific challenge. Here, we propose a methodology that enables us to extract an... | [
"q-bio.MN",
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10022257 | astro-ph/0502476 | 2005-02-23 | Dynamic Meteorology at the Photosphere of HD 209458b | We calculate the meteorology of the close-in transiting extrasolar planet HD 209458b using a global, three-dimensional atmospheric circulation model. Dynamics are driven by perpetual irradiation of one hemisphere of this tidally locked planet. The simulation predicts global temperature contrasts of ~500 K at the photos... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3251629 | q-bio/0502031 | 2005-02-23 | Signal buffering in random networks of spiking neurons: microscopic vs. macroscopic phenomena | In randomly connected networks of pulse-coupled elements a time-dependent input signal can be buffered over a short time. We studied the signal buffering properties in simulated networks as a function of the networks state, characterized by both the Lyapunov exponent of the microscopic dynamics and the macroscopic acti... | [
"q-bio.NC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j mayor_1",
"name": "Julien Mayor",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "w gerstner_1",
"name": "Wulfram Gerstner",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
53348 | math/0502473 | 2005-02-23 | The proof of Tchakaloff's Theorem | We provide a simple proof of Tchakaloff's Theorem on the existence of cubature formulas of degree $m$ for Borel measures with moments up to order $m$. The result improves known results for non-compact supports, since we do not need conditions on $(m+1)$st moments. | [
"math.NA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6379045 | q-bio/0502037 | 2005-02-24 | Optimal Spike-Timing Dependent Plasticity for Precise Action Potential Firing | In timing-based neural codes, neurons have to emit action potentials at precise moments in time. We use a supervised learning paradigm to derive a synaptic update rule that optimizes via gradient ascent the likelihood of postsynaptic firing at one or several desired firing times. We find that the optimal strategy of up... | [
"q-bio.NC"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference",
"target.key_reference"
] | [] | [
{
"author_id": "j pfister_1",
"name": "Jean-Pascal Pfister",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "t toyoizumi_1",
"name": "Taro Toyoizumi",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
9512838 | astro-ph/0502501 | 2005-02-24 | Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array | We present total and polarized intensity images of 15 active galactic nuclei obtained with the Very Long Baseline Array at 7 mm at 17 epochs from 1998 March to 2001 April. At some epochs the images are accompanied by nearly simultaneous polarization measurements at 3 mm, 1.35/0.85 mm, and optical wavelengths. Here we a... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12155180 | nlin/0502055 | 2005-02-24 | Sufficient Conditions for Fast Switching Synchronization in Time Varying Network Topologies | In previous work, empirical evidence indicated that a time-varying network could propagate sufficient information to allow synchronization of the sometimes coupled oscillators, despite an instantaneously disconnected topology. We prove here that if the network of oscillators synchronizes for the static time-average of ... | [
"nlin.CD",
"cond-mat.dis-nn",
"nlin.AO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18862544 | astro-ph/0502504 | 2005-02-24 | [O I] 6300A emission in Herbig Ae/Be systems: signature of Keplerian rotation | We present high spectral-resolution optical spectra of 49 Herbig Ae/Be stars in a search for the [O I] 6300A line. The vast majority of the stars in our sample show narrow (FWHM < 100 km/s) emission lines, centered on the stellar radial velocity. In only three sources is the feature much broader (~400 km/s), and strong... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
39817594 | physics/0502134 | 2005-02-24 | Large-Eddy Simulation of Stably Stratified Atmospheric Boundary Layer Turbulence: A Scale-Dependent Dynamic Modeling Approach | A new tuning-free subgrid-scale model, termed `locally-averaged scale-dependent dynamic' (LASDD) model, is developed and implemented in large-eddy simulations (LESs) of stable boundary layers. The new model dynamically computes the Smagorinsky coefficient and the subgrid-scale Prandtl number based on the local dynamics... | [
"physics.ao-ph",
"physics.flu-dyn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
108289053 | quant-ph/0502160 | 2005-02-24 | Multipartite entanglement in spin chains | We investigate the presence of multipartite entanglement in macroscopic spin chains. We discuss the Heisenberg and the XY model and derive bounds on the internal energy for systems without multipartite entanglement. Based on this we show that in thermal equilibrium the above mentioned spin systems contain genuine multi... | [
"quant-ph",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "o guehne_1",
"name": "Otfried Guehne",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g tóth_1",
"name": "Géza Tóth",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num... | null |
19437870 | astro-ph/0502521 | 2005-02-24 | Revealing the Supernova--Gamma-Ray Burst Connection with TeV Neutrinos | Gamma-ray bursts (GRBs) are rare but powerful explosions displaying highly relativistic jets. It has been suggested that a significant fraction of the much more frequent core-collapse supernovae are accompanied by comparably energetic but mildly relativistic jets, which would indicate an underlying supernova--GRB conne... | [
"astro-ph",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18452670 | astro-ph/0502528 | 2005-02-24 | A Systematic Search for Gravitationally-Lensed Arcs in the Hubble Space Telescope WFPC2 Archive | We present the results of a systematic search for gravitationally-lensed arcs in clusters of galaxies located in the Hubble Space Telescope Wide Field and Planetary Camera 2 data archive. By carefully examining the images of 128 clusters we have located 12 candidate radial arcs and 104 tangential arcs, each of whose le... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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