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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
10566539 | astro-ph/0601660 | 2006-01-28 | Multifrequency observations of the jets in the radio galaxy NGC 315 | We present images of the jets in the nearby radio galaxy NGC 315 made with the VLA at five frequencies between 1.365 and 5 GHz with resolutions between 1.5 and 45 arcsec FWHM. Within 15 arcsec of the nucleus, the spectral index of the jets is 0.61. Further from the nucleus, the spectrum is flatter, with significant tra... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13102077 | math/0601699 | 2006-01-28 | Multi-Dimensional G-Brownian Motion and Related Stochastic Calculus under G-Expectation | We develop a notion of nonlinear expectation --G-expectation-- generated by a nonlinear heat equation with infinitesimal generator G. We first study multi-dimensional G-normal distributions. With this nonlinear distribution we can introduce our G-expectation under which the canonical process is a multi dimensional G-Br... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2705302 | cond-mat/0601656 | 2006-01-30 | Study of temperature dependent atomic correlations in MgB$_{2}$ | We have studied the evolution with temperature of the local as well as the average crystal structure of MgB$_2$ using the real-space atomic pair distribution function (PDF) measured by high resolution neutron powder diffraction. We have investigated the correlations of the B-B and B-Mg nearest neighbor pair motion by c... | [
"cond-mat.supr-con"
] | null | [
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] | [] | [
{
"author_id": "g campi_1",
"name": "Gaetano Campi",
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{
"author_id": "e cappelluti_1",
"name": "Emmanuele Cappelluti",
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"num_papers":... | null |
8179293 | math/0601741 | 2006-01-30 | An introduction to quantum filtering | This paper provides an introduction to quantum filtering theory. An introduction to quantum probability theory is given, focusing on the spectral theorem and the conditional expectation as a least squares estimate, and culminating in the construction of Wiener and Poisson processes on the Fock space. We describe the qu... | [
"math.OC",
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"quant-ph"
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16631993 | astro-ph/0601672 | 2006-01-30 | Avoiding Dark Energy with 1/R Modifications of Gravity | Scalar quintessence seems epicyclic because one can choose the potential to reproduce any cosmology (I review the construction) and because the properties of this scalar seem to raise more questions than they answer. This is why there has been so much recent interest in modified gravity. I review the powerful theorem o... | [
"astro-ph",
"gr-qc",
"hep-ph"
] | null | [
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] | null | null | null |
58758 | cs/0601130 | 2006-01-30 | From Dumb Wireless Sensors to Smart Networks using Network Coding | The vision of wireless sensor networks is one of a smart collection of tiny, dumb devices. These motes may be individually cheap, unintelligent, imprecise, and unreliable. Yet they are able to derive strength from numbers, rendering the whole to be strong, reliable and robust. Our approach is to adopt a distributed and... | [
"cs.IT",
"cs.NI",
"math.IT"
] | null | [
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] | [] | [
{
"author_id": "a dimakis_1",
"name": "Alexandros [\"G.\"] Dimakis",
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{
"author_id": "d petrovic_0",
"name": "Dragan Petrovic",
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7336258 | cs/0601124 | 2006-01-30 | Power Control for User Cooperation | For a fading Gaussian multiple access channel with user cooperation, we obtain the optimal power allocation policies that maximize the rates achievable by block Markov superposition coding. The optimal policies result in a coding scheme that is simpler than the one for a general multiple access channel with generalized... | [
"cs.IT",
"math.IT"
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{
"author_id": "o kaya_1",
"name": "Onur Kaya",
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"author_id": "s ulukus_1",
"name": "Sennur Ulukus",
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118934799 | hep-ph/0601256 | 2006-01-30 | Incorporating Memory Effects in Phase Separation Processes | We consider the modification of the Cahn-Hilliard equation when a time delay process through a memory function is taken into account. We then study the process of spinodal decomposition in fast phase transitions associated with a conserved order parameter. Finite-time memory effects are seen to affect the dynamics of p... | [
"hep-ph",
"cond-mat.soft",
"hep-th",
"nucl-th"
] | null | [
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] | null | null | null |
15177340 | math/0601771 | 2006-01-31 | Metastable Behaviour of Small Noise Levy-Driven Diffusions | We consider a dynamical system in R driven by a vector field -U', where U is a multi-well potential satisfying some regularity conditions. We perturb this dynamical system by a Levy noise of small intensity and such that the heaviest tail of its Levy measure is regularly varying. We show that the perturbed dynamical sy... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1940066 | physics/0602001 | 2006-01-31 | Dynamics of polydisperse irreversible adsorption: a pharmacological example | Many drug delivery systems suffer from undesirable interactions with the host immune system. It has been experimentally established that covalent attachment (irreversible adsorption) of suitable macromolecules to the surface of the drug carrier can reduce such undesirable interactions. A fundamental understanding of th... | [
"physics.bio-ph",
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{
"author_id": "r erban_1",
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"author_id": "j chapman_4",
"name": "Jonathan Chapman",
"publication_history": null,
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... | null |
6243274 | hep-ph/0602003 | 2006-02-01 | A parameterisation of single and multiple muons in the deep water or ice | A new parameterisation of atmospheric muons deep underwater (or ice) is presented. It takes into account the simultaneous arrival of muons in bundle giving the multiplicity of the events and the muon energy spectrum as a function of their lateral distribution in a shower. | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15010221 | math/0602008 | 2006-02-01 | The Brownian Frame Process as a Rough Path | We introduce the (path-valued) Brownian frame process whose evaluation at time t is the sample path of the underlying Brownian motion run from time t-1 to t. Due to its connections with Gaussian Volterra processes and SDDEs this is an interesting object to study. The first part deals with path-wise properties of the Br... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119391518 | quant-ph/0602001 | 2006-02-01 | Hudson's Theorem for finite-dimensional quantum systems | We show that, on a Hilbert space of odd dimension, the only pure states to possess a non-negative Wigner function are stabilizer states. The Clifford group is identified as the set of unitary operations which preserve positivity. The result can be seen as a discrete version of Hudson's Theorem. Hudson established that ... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16979389 | math/0602052 | 2006-02-02 | Toric fiber products | We introduce and study the toric fiber product of two ideals in polynomial rings that are homogeneous with respect to the same multigrading. Under the assumption that the set of degrees of the variables form a linearly independent set, we can explicitly describe generating sets and Groebner bases for these ideals. This... | [
"math.AC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
85506697 | hep-ph/0602016 | 2006-02-02 | Construction and analysis of a simplified many-body neutrino model | In dense neutrino systems, such as found in the early Universe, or near a supernova core, neutrino flavor evolution is affected by coherent neutrino-neutrino scattering. It has been recently suggested that many-particle quantum entanglement effects may play an essential role in these systems, potentially invalidating t... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14308886 | math/0602067 | 2006-02-03 | Stability of Statistical Properties in Two-Dimensional Piecewise Hyperbolic Maps | We investigate the statistical properties of a piecewise smooth dynamical system by studying directly the action of the transfer operator on appropriate spaces of distributions. We accomplish such a program in the case of two-dimensional maps with uniformly bounded second derivative, but we are confident that the prese... | [
"math.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16405860 | hep-ph/0602031 | 2006-02-03 | Matching Parton Showers and Matrix Elements | We compare different procedures for combining fixed-order tree-level matrix element generators with parton showers. We use the case of W-production at the Tevatron and the LHC to compare different implementations of the so-called CKKW scheme and one based on the so-called MLM scheme using different matrix element gener... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119023375 | astro-ph/0602080 | 2006-02-03 | Abell 2111: An Optical and Radio Study of the Richest Butcher-Oemler Cluster | We present an in-depth analysis of the Butcher-Oemler cluster A2111, including new optical spectroscopy plus a deep Very Large Array (VLA) radio continuum observation. These are combined with optical imaging from the Sloan Digital Sky Survey (SDSS) to assess the activity and properties of member galaxies. Prior X-ray s... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118977672 | cond-mat/0602085 | 2006-02-03 | Feedback-optimized parallel tempering Monte Carlo | We introduce an algorithm to systematically improve the efficiency of parallel tempering Monte Carlo simulations by optimizing the simulated temperature set. Our approach is closely related to a recently introduced adaptive algorithm that optimizes the simulated statistical ensemble in generalized broad-histogram Monte... | [
"cond-mat.other",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11357370 | cond-mat/0602081 | 2006-02-03 | Scale-free network growth by ranking | Network growth is currently explained through mechanisms that rely on node prestige measures, such as degree or fitness. In many real networks those who create and connect nodes do not know the prestige values of existing nodes, but only their ranking by prestige. We propose a criterion of network growth that explicitl... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"physics.soc-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2095658 | cs/0602007 | 2006-02-04 | Fuzzy Extractors: How to Generate Strong Keys from Biometrics and Other Noisy Data | We provide formal definitions and efficient secure techniques for - turning noisy information into keys usable for any cryptographic application, and, in particular, - reliably and securely authenticating biometric data. Our techniques apply not just to biometric information, but to any keying material that, unlike tra... | [
"cs.CR",
"cs.IT",
"math.IT"
] | null | [
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] | null | null | null |
262390708 | q-bio/0602004 | 2006-02-04 | CFinder: Locating cliques and overlapping modules in biological networks | Summary: Most cellular tasks are performed not by individual proteins, but by groups of functionally associated proteins, often referred to as modules. In a protein assocation network modules appear as groups of densely interconnected nodes, also called communities or clusters. These modules often overlap with each oth... | [
"q-bio.MN",
"q-bio.GN"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10786668 | cond-mat/0602112 | 2006-02-05 | Half-metallic ferromagnetism induced by dynamic electron correlations in VAs | The electronic structure of the VAs compound in the zinc-blende structure is investigated using a combined density-functional and dynamical mean-field theory approach. Contrary to predictions of a ferromagnetic semiconducting ground state obtained by density-functional calculations, dynamical correlations induce a clos... | [
"cond-mat.str-el",
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
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{
"author_id": "l chioncel_1",
"name": "Liviu Chioncel",
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"author_id": "p mavropoulos_0",
"name": "Phivos Mavropoulos",
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8132873 | quant-ph/0602053 | 2006-02-06 | Combinatorial approach to multipartite quantum systems:basic formulation | In this paper we give a method to associate a graph with an arbitrary density matrix referred to a standard orthonormal basis in the Hilbert space of a finite dimensional quantum system. We study the related issues like classification of pure and mixed states, Von-Neumann entropy, separability of multipartite quantum s... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
95300825 | cond-mat/0602148 | 2006-02-06 | On the analysis of the vibrational Boson peak and low-energy excitations in glasses | Implications of reduction procedures applied to the low energy part of the vibrational density of states in glasses and supercooled liquids are considered by advancing a detailed comparison between the excess - over the Debye limit - vibrational density of states g(w) and the frequency-reduced representation g(w)/w^2 u... | [
"cond-mat.dis-nn",
"cond-mat.soft"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119335036 | hep-ph/0602050 | 2006-02-06 | Exclusive semileptonic and nonleptonic decays of the Bc meson | We study exclusive nonleptonic and semileptonic decays of the Bc-meson within a relativistic constituent quark model previously developed by us. For the nonleptonic decays we use the factorizing approximation. We update our model parameters by using new experimental data for the mass and the lifetime of the Bc meson an... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14843992 | astro-ph/0602122 | 2006-02-06 | Not Alone: Tracing the Origins of Very Low Mass Stars and Brown Dwarfs Through Multiplicity Studies | The properties of multiple stellar systems have long provided important empirical constraints for star formation theories, enabling (along with several other lines of evidence) a concrete, qualitative picture of the birth and early evolution of normal stars. At very low masses (VLM; M <~ 0.1 M_sun), down to and below t... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a burgasser_1",
"name": "Adam [\"J.\"] Burgasser",
"publication_history": null,
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},
{
"author_id": "i reid_1",
"name": "I. [\"Neill\"] Reid",
"publication_history": null,
"h_index": null,
"num_p... | null |
118865956 | astro-ph/0602128 | 2006-02-06 | A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33 | We present UBVRI photometry obtained from Mosaic images of M31 and M33 using the KPNO 4-m telescope. The survey covers 2.2 sq degrees of M31, and 0.8 sq degrees of M33, chosen so as to include all of the regions currently active in forming massive stars. The catalog contains 371,781 and 146,622 stars in M31 and M33, re... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18438265 | quant-ph/0602069 | 2006-02-06 | Degradation of a quantum reference frame | We investigate the degradation of reference frames, treated as dynamical quantum systems, and quantify their longevity as a resource for performing tasks in quantum information processing. We adopt an operational measure of a reference frame's longevity, namely, the number of measurements that can be made against it wi... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s bartlett_1",
"name": "Stephen [\"D.\"] Bartlett",
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{
"author_id": "t rudolph_1",
"name": "Terry Rudolph",
"publication_history": null,
"h_index": null,
"num_pap... | null |
26967939 | math/0602136 | 2006-02-07 | Weighted Sobolev inequalities and Ricci flat manifolds | We prove a weighted Sobolev inequality and a Hardy inequality on manifolds with nonnegative Ricci curvature satisfying an inverse doubling volume condition. It enables us to obtain rigidity results for Ricci flat manifolds, generalizing earlier work of Bando, Kasue and Nakajima. | [
"math.DG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16870935 | astro-ph/0602169 | 2006-02-07 | Analysis of IUE spectra of helium-rich white dwarf stars | We studied the class of DB white dwarf stars, using re-calibrated UV spectra for thirty four DBs obtained with the IUE satellite. By comparing the observed energy distributions with model atmospheres, we simultaneously determine spectroscopic distances (d), effective temperature (Teff), and surface gravities (log g). U... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8261426 | cs/0602028 | 2006-02-07 | Analysis of Belief Propagation for Non-Linear Problems: The Example of CDMA (or: How to Prove Tanaka's Formula) | We consider the CDMA (code-division multiple-access) multi-user detection problem for binary signals and additive white gaussian noise. We propose a spreading sequences scheme based on random sparse signatures, and a detection algorithm based on belief propagation (BP) with linear time complexity. In the new scheme, ea... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14061911 | cond-mat/0602183 | 2006-02-07 | Nonlinear parametric model for Granger causality of time series | We generalize a previously proposed approach for nonlinear Granger causality of time series, based on radial basis function. The proposed model is not constrained to be additive in variables from the two time series and can approximate any function of these variables, still being suitable to evaluate causality. Usefuln... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"cs.LG",
"physics.med-ph",
"q-bio.QM"
] | null | [
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{
"author_id": "d marinazzo_1",
"name": "Daniele Marinazzo",
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{
"author_id": "m pellicoro_1",
"name": "Mario Pellicoro",
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273968757 | math/0602133 | 2006-02-07 | Statistical Challenges with High Dimensionality: Feature Selection in Knowledge Discovery | Technological innovations have revolutionized the process of scientific research and knowledge discovery. The availability of massive data and challenges from frontiers of research and development have reshaped statistical thinking, data analysis and theoretical studies. The challenges of high-dimensionality arise in d... | [
"math.ST",
"math.OC",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13277735 | math/0602139 | 2006-02-07 | Global existence results for complex hyperbolic models of bacterial chemotaxis | Bacteria are able to respond to environmental signals by changing their rules of movement. When we take into account chemical signals in the environment, this behaviour is often called chemotaxis. At the individual-level, chemotaxis consists of several steps. First, the cell detects the extracellular signal using recep... | [
"math.AP",
"q-bio.CB",
"q-bio.MN",
"q-bio.PE"
] | null | [
"target.author.publication_history"
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{
"author_id": "r erban_1",
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{
"author_id": "h hwang_4",
"name": "Hyung [\"Ju\"] Hwang",
"publication_history": null,
"h_index": null,
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... | null |
10514422 | math/0602149 | 2006-02-08 | The Hyperdeterminant and Triangulations of the 4-Cube | The hyperdeterminant of format 2 x 2 x 2 x 2 is a polynomial of degree 24 in 16 unknowns which has 2894276 terms. We compute the Newton polytope of this polynomial and the secondary polytope of the 4-cube. The 87959448 regular triangulations of the 4-cube are classified into 25448 D-equivalence classes, one for each ve... | [
"math.CO",
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16073898 | cs/0602030 | 2006-02-08 | Single-Symbol Maximum Likelihood Decodable Linear STBCs | Space-Time block codes (STBC) from Orthogonal Designs (OD) and Co-ordinate Interleaved Orthogonal Designs (CIOD) have been attracting wider attention due to their amenability for fast (single-symbol) ML decoding, and full-rate with full-rank over quasi-static fading channels. However, these codes are instances of singl... | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119098107 | quant-ph/0602079 | 2006-02-08 | Quantum communication, reference frames and gauge theory | We consider quantum communication in the case that the communicating parties not only do not share a reference frame but use imperfect quantum communication channels, in that each channel applies some fixed but unknown unitary rotation to each qubit. We discuss similarities and differences between reference frames with... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119436782 | nucl-ex/0602011 | 2006-02-09 | Forward Neutral Pion Production in p+p and d+Au Collisions at sqrt(s_NN)=200 GeV | Measurements of the production of forward pi0 mesons from p+p and d+Au collisions at sqrt(s_NN)=200 GeV are reported. The p+p yield generally agrees with next-to-leading order perturbative QCD calculations. The d+Au yield per binary collision is suppressed as eta increases, decreasing to ~30% of the p+p yield at <eta>=... | [
"nucl-ex",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
32753525 | cond-mat/0602251 | 2006-02-09 | Anisotropic magnetoresistance and anisotropic tunneling magnetoresistance due to quantum interference in ferromagnetic metal break junctions | We measure the low-temperature resistance of permalloy break junctions as a function of contact size and the magnetic field angle, in applied fields large enough to saturate the magnetization. For both nanometer-scale metallic contacts and tunneling devices we observe large changes in resistance with angle, as large as... | [
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "k bolotin_1",
"name": "Kirill [\"I.\"] Bolotin",
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{
"author_id": "f kuemmeth_1",
"name": "Ferdinand Kuemmeth",
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18778001 | astro-ph/0602217 | 2006-02-09 | On the Location of the Snow Line in a Protoplanetary Disk | In a protoplanetary disk, the inner edge of the region where the temperature falls below the condensation temperature of water is referred to as the 'snow line'. Outside the snow line, water ice increases the surface density of solids by a factor of 4. The mass of the fastest growing planetesimal (the 'isolation mass')... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
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] | [
{
"author_id": "m lecar_0",
"name": "Myron Lecar",
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{
"author_id": "m podolak_0",
"name": "Morris Podolak",
"publication_history": null,
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... | null |
17418469 | astro-ph/0602221 | 2006-02-09 | Measuring Magnetic Fields in Ultracool Stars and Brown Dwarfs | We present a new method for direct measurement of magnetic fields on ultracool stars and brown dwarfs. It takes advantage of the Wing-Ford band of FeH, which are seen throughout the M and L spectral types. These molecular features are not as blended as other optical molecular bands, are reasonably strong through most o... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6283668 | quant-ph/0602088 | 2006-02-09 | Quantum Hardcore Functions by Complexity-Theoretical Quantum List Decoding | Hardcore functions have been used as a technical tool to construct secure cryptographic systems; however, little is known on their quantum counterpart, called quantum hardcore functions. With a new insight into fundamental properties of quantum hardcores, we present three new quantum hardcore functions for any (strong)... | [
"quant-ph",
"cs.CC"
] | null | [
"target.author.publication_history",
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{
"author_id": "a kawachi_1",
"name": "Akinori Kawachi",
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{
"author_id": "t yamakami_1",
"name": "Tomoyuki Yamakami",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
14244782 | math/0602211 | 2006-02-10 | Recursive Monte Carlo filters: Algorithms and theoretical analysis | Recursive Monte Carlo filters, also called particle filters, are a powerful tool to perform computations in general state space models. We discuss and compare the accept--reject version with the more common sampling importance resampling version of the algorithm. In particular, we show how auxiliary variable methods an... | [
"math.ST",
"stat.TH"
] | null | [
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] | null | null | null |
42706423 | astro-ph/0602228 | 2006-02-10 | Chandra and Spitzer unveil heavily obscured quasars in the SWIRE/Chandra Survey | Using the large multi-wavelength data set in the chandra/SWIRE Survey (0.6 square degrees in the Lockman Hole), we show evidence for the existence of highly obscured (Compton-thick) AGN, estimate a lower limit to their surface density and characterize their multi-wavelength properties. Two independent selection methods... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
270652 | cs/0602043 | 2006-02-11 | Computing Nash Equilibria: Approximation and Smoothed Complexity | We show that the BIMATRIX game does not have a fully polynomial-time approximation scheme, unless PPAD is in P. In other words, no algorithm with time polynomial in n and 1/\epsilon can compute an \epsilon-approximate Nash equilibrium of an n by nbimatrix game, unless PPAD is in P. Instrumental to our proof, we introdu... | [
"cs.CC",
"cs.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
88518932 | math/0602239 | 2006-02-11 | Asymptotic behavior of the unconditional NPMLE of the length-biased survivor function from right censored prevalent cohort data | Right censored survival data collected on a cohort of prevalent cases with constant incidence are length-biased, and may be used to estimate the length-biased (i.e., prevalent-case) survival function. When the incidence rate is constant, so-called stationarity of the incidence, it is more efficient to use this structur... | [
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"name": "David [\"B.\"] Wolfson",
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18325731 | math/0602253 | 2006-02-12 | Pseudo full likelihood estimation for prospective survival analysis with a general semiparametric shared frailty model: asymptotic theory | In this work we present a simple estimation procedure for a general frailty model for analysis of prospective correlated failure times. Earlier work showed this method to perform well in a simulation study. Here we provide rigorous large-sample theory for the proposed estimators of both the regression coefficient vecto... | [
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"author_id": "m gorfine_1",
"name": "Malka Gorfine",
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14966779 | cond-mat/0602293 | 2006-02-13 | A variational approach to the moving contact line hydrodynamics | In immiscible two-phase flows, contact line denotes the intersection of the fluid-fluid interface with the solid wall. When one fluid displaces the other, the contact line moves along the wall. A classical problem in continuum hydrodynamics is the incompatibility between the moving contact line and the no-slip boundary... | [
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] | null | [
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] | null | null | null |
118963873 | cond-mat/0602305 | 2006-02-13 | Time evolution of Matrix Product States | In this work we develop several new simulation algorithms for 1D many-body quantum mechanical systems combining the Matrix Product State variational ansatz with Taylor, Pade and Arnoldi approximations to the evolution operator. By comparing all methods with previous techniques based on Trotter decompositions we demonst... | [
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] | null | [
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] | null | null | null |
1522622 | cs/0602049 | 2006-02-13 | Cooperative Lattice Coding and Decoding | A novel lattice coding framework is proposed for outage-limited cooperative channels. This framework provides practical implementations for the optimal cooperation protocols proposed by Azarian et al. In particular, for the relay channel we implement a variant of the dynamic decode and forward protocol, which uses orth... | [
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"name": "Kambiz Azarian",
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60408 | cs/0602050 | 2006-02-13 | Outage Capacity of the Fading Relay Channel in the Low SNR Regime | In slow fading scenarios, cooperation between nodes can increase the amount of diversity for communication. We study the performance limit in such scenarios by analyzing the outage capacity of slow fading relay channels. Our focus is on the low SNR and low outage probability regime, where the adverse impact of fading i... | [
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"author_id": "d tse_2",
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6964173 | cs/0602048 | 2006-02-13 | On the Optimality of the ARQ-DDF Protocol | The performance of the automatic repeat request-dynamic decode and forward (ARQ-DDF) cooperation protocol is analyzed in two distinct scenarios. The first scenario is the multiple access relay (MAR) channel where a single relay is dedicated to simultaneously help several multiple access users. For this setup, it is sho... | [
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"name": "Hesham [\"El\"] Gamal",
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15085421 | q-bio/0602016 | 2006-02-13 | Coexistence of resonant activation and noise enhanced stability in a model of tumor-host interaction: Statistics of extinction times | We study a Langevin equation derived from the Michaelis-Menten (MM) phenomenological scheme for catalysis accompanying a spontaneous replication of molecules, which may serve as a simple model of cell-mediated immune surveillance against cancer. We examine how two different and statistically independent sources of nois... | [
"q-bio.PE"
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"target.author.publication_history.key_reference"
] | null | null | null |
9080115 | math/0602311 | 2006-02-14 | Asymptotic minimaxity of False Discovery Rate thresholding for sparse exponential data | We apply FDR thresholding to a non-Gaussian vector whose coordinates X_i, i=1,..., n, are independent exponential with individual means $\mu_i$. The vector $\mu =(\mu_i)$ is thought to be sparse, with most coordinates 1 but a small fraction significantly larger than 1; roughly, most coordinates are simply `noise,' but ... | [
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"name": "Jiashun Jin",
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18618068 | astro-ph/0602297 | 2006-02-14 | The ACS Virgo Cluster Survey. VI. Isophotal Analysis and the Structure of Early-Type Galaxies | (Abridged) We present a detailed analysis of the morphology, isophotal parameters and surface brightness profiles for 100 early-type members of the Virgo Cluster, from dwarfs (M_B = -15.1 mag) to giants (M_B = -21.8 mag). Each galaxy has been imaged in two filters, closely resembling the Sloan g and z passbands, using ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13927847 | quant-ph/0602108 | 2006-02-14 | Efficient algorithm for a quantum analogue of 2-SAT | Complexity of a quantum analogue of the satisfiability problem is studied. Quantum k-SAT is a problem of verifying whether there exists n-qubit pure state such that its k-qubit reduced density matrices have support on prescribed subspaces. We present a classical algorithm solving quantum 2-SAT in a polynomial time. It ... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15859310 | cond-mat/0602361 | 2006-02-15 | Local atomic structure and discommensurations in the charge density wave of CeTe3 | The local structure of CeTe3 in the incommensurate charge density wave (IC-CDW) state has been obtained using atomic pair distribution function (PDF) analysis of x-ray diffraction data. Local atomic distortions in the Te-nets due to the CDW are larger than observed crystallographically, resulting in distinct short and ... | [
"cond-mat.mtrl-sci"
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{
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18814602 | math/0602326 | 2006-02-15 | Order selection for same-realization predictions in autoregressive processes | Assume that observations are generated from an infinite-order autoregressive [AR($\infty$)] process. Shibata [Ann. Statist. 8 (1980) 147--164] considered the problem of choosing a finite-order AR model, allowing the order to become infinite as the number of observations does in order to obtain a better approximation. H... | [
"math.ST",
"stat.TH"
] | null | [
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118950116 | quant-ph/0602130 | 2006-02-15 | One-and-a-half quantum de Finetti theorems | We prove a new kind of quantum de Finetti theorem for representations of the unitary group U(d). Consider a pure state that lies in the irreducible representation U_{mu+nu} for Young diagrams mu and nu. U_{mu+nu} is contained in the tensor product of U_mu and U_nu; let xi be the state obtained by tracing out U_nu. We s... | [
"quant-ph"
] | null | [
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] | null | null | null |
17046328 | cond-mat/0602395 | 2006-02-16 | Analysis of Granular Flow in a Pebble-Bed Nuclear Reactor | Pebble-bed nuclear reactor technology, which is currently being revived around the world, raises fundamental questions about dense granular flow in silos. A typical reactor core is composed of graphite fuel pebbles, which drain very slowly in a continuous refueling process. Pebble flow is poorly understood and not easi... | [
"cond-mat.soft"
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{
"author_id": "c rycroft_1",
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"name": "Gary [\"S.\"] Grest",
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53679416 | astro-ph/0602375 | 2006-02-16 | Observational constraints on Cosmic Reionization | Recent observations have set the first constraints on the epoch of reionization (EoR), corresponding to the formation epoch of the first luminous objects. Studies of Gunn-Peterson (GP) absorption, and related phenomena, suggest a qualitative change in the state of the intergalactic medium (IGM) at $z \sim 6$, indicatin... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14007750 | astro-ph/0602350 | 2006-02-16 | Star Formation and Feedback in Smoothed Particle Hydrodynamic Simulations--I. Isolated Galaxies | We present an analysis of star formation and feedback recipes appropriate for galactic smoothed particle hydrodynamics simulations. Using an isolated Milky Way-like galaxy, we constrain these recipes based on well-established observational results. Our star formation recipe is based on that of Katz (1992) with the addi... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6307854 | nlin/0602036 | 2006-02-16 | On Decompositions of the KdV 2-Soliton | The KdV equation is the canonical example of an integrable non-linear partial differential equation supporting multi-soliton solutions. Seeking to understand the nature of this interaction, we investigate different ways to write the KdV 2-soliton solution as a sum of two or more functions. The paper reviews previous wo... | [
"nlin.PS",
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] | null | [
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] | null | null | null |
119684972 | math/0602345 | 2006-02-16 | Euler Estimates of Rough Differential Equations | We consider controlled differential equations and give new estimates for higher order Euler schemes. Our proofs are inspired by recent work of A. M. Davie who considers first and second order schemes. In order to implement the general case we make systematic use of geodesic approximations in the free nilpotent group. A... | [
"math.CA",
"math.PR"
] | null | [
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] | null | null | null |
17971560 | cond-mat/0602394 | 2006-02-16 | Dynamics of Random Packings in Granular Flow | We present a multiscale simulation algorithm for amorphous materials, which we illustrate and validate in a canonical case of dense granular flow. Our algorithm is based on the recently proposed Spot Model, where particles in a dense random packing undergo chain-like collective displacements in response to diffusing "s... | [
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34577127 | cond-mat/0602430 | 2006-02-17 | Valence Bond Solids and Their Quantum Melting in Hard-Core Bosons on the Kagome Lattice | Using large scale quantum Monte Carlo simulations and dual vortex theory we analyze the ground state phase diagram of hard-core bosons on the kagome lattice with nearest neighbor repulsion. In contrast to the case of a triangular lattice, no supersolid emerges for strong interactions. While a uniform superfluid prevail... | [
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{
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"author_id": "s wessel_1",
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196729 | cond-mat/0602432 | 2006-02-17 | State tomography of capacitively shunted phase qubits with high fidelity | We introduce a new design concept for superconducting quantum bits (qubits) in which we explicitly separate the capacitive element from the Josephson tunnel junction for improved qubit performance. The number of two-level systems (TLS) that couple to the qubit is thereby reduced by an order of magnitude and the measure... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18571368 | math/0602381 | 2006-02-17 | Distortion mismatch in the quantization of probability measures | We elucidate the asymptotics of the L^s-quantization error induced by a sequence of L^r-optimal n-quantizers of a probability distribution P on R^d when s>r. In particular we show that under natural assumptions, the optimal rate is preserved as long as s<r+d (and for every s in the case of a compactly supported distrib... | [
"math.PR"
] | null | [
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] | null | null | null |
2774707 | physics/0602124 | 2006-02-17 | Modularity and community structure in networks | Many networks of interest in the sciences, including a variety of social and biological networks, are found to divide naturally into communities or modules. The problem of detecting and characterizing this community structure has attracted considerable recent attention. One of the most sensitive detection methods is op... | [
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] | null | [
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14064413 | astro-ph/0602411 | 2006-02-17 | Measurement of \Omega_m, \Omega_{\Lambda} from a blind analysis of Type Ia supernovae with CMAGIC: Using color information to verify the acceleration of the Universe | We present measurements of \Omega_m and \Omega_{\Lambda} from a blind analysis of 21 high-redshift supernovae using a new technique (CMAGIC) for fitting the multi-color lightcurves of Type Ia supernovae, first introduced in Wang et al. (2003). CMAGIC takes advantage of the remarkably simple behavior of Type Ia supernov... | [
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12111066 | cs/0602062 | 2006-02-17 | Learning rational stochastic languages | Given a finite set of words w1,...,wn independently drawn according to a fixed unknown distribution law P called a stochastic language, an usual goal in Grammatical Inference is to infer an estimate of P in some class of probabilistic models, such as Probabilistic Automata (PA). Here, we study the class of rational sto... | [
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{
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... | null |
261824420 | astro-ph/0602412 | 2006-02-18 | The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements | We have obtained high resolution images of the central regions of 14 reverberation-mapped active galactic nuclei (AGN) using the Hubble Space Telescope Advanced Camera for Surveys High Resolution Camera to account for host-galaxy starlight contamination of measured AGN luminosities. We measure the host-galaxy starlight... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7254010 | cs/0602071 | 2006-02-19 | Geographic Gossip: Efficient Aggregation for Sensor Networks | Gossip algorithms for aggregation have recently received significant attention for sensor network applications because of their simplicity and robustness in noisy and uncertain environments. However, gossip algorithms can waste significant energy by essentially passing around redundant information multiple times. For r... | [
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] | null | [
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{
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"name": "Anand [\"D.\"] Sarwate",
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... | null |
22565444 | astro-ph/0602430 | 2006-02-20 | Can sterile neutrinos be the dark matter? | We use the Ly-alpha forest power spectrum measured by the SDSS and high-resolution spectroscopy observations in combination with cosmic microwave background and galaxy clustering constraints to place limits on a sterile neutrino as a dark matter candidate in the warm dark matter (WDM) scenario. Such a neutrino would be... | [
"astro-ph"
] | null | [
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{
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"name": "Alexey Makarov",
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... | null |
15842915 | astro-ph/0602434 | 2006-02-20 | Systematics in the X-ray Cluster Mass Estimators | We examine the systematics affecting the X-ray mass estimators applied to a set of five simulated galaxy clusters. They have been processed through the X-ray Map Simulator, X-MAS, to provide Chandra-like long exposures that are analyzed to reconstruct the gas temperature, density, and mass profiles used as input. We fi... | [
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"name": "Stefano Ettori",
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"... | null |
2956810 | hep-th/0602178 | 2006-02-20 | Causality, Analyticity and an IR Obstruction to UV Completion | We argue that certain apparently consistent low-energy effective field theories described by local, Lorentz-invariant Lagrangians, secretly exhibit macroscopic non-locality and cannot be embedded in any UV theory whose S-matrix satisfies canonical analyticity constraints. The obstruction involves the signs of a set of ... | [
"hep-th",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4423191 | astro-ph/0602450 | 2006-02-20 | Significant primordial star formation at redshifts z ~ 3-4 | Four recent observational results have challenged our understanding of high--redshift galaxies, as they require the presence of far more ultraviolet photons than should be emitted by normal stellar populations. First, there is significant ultraviolet emission from Lyman Break Galaxies (LBGs) at wavelenghts shorter than... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2418153 | physics/0602134 | 2006-02-20 | Detecting rich-club ordering in complex networks | Uncovering the hidden regularities and organizational principles of networks arising in physical systems ranging from the molecular level to the scale of large communication infrastructures is the key issue for the understanding of their fabric and dynamical properties [1-5]. The ``rich-club'' phenomenon refers to the ... | [
"physics.data-an",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
39604711 | cond-mat/0602469 | 2006-02-20 | Thermal conductivity in the vicinity of the quantum critical endpoint in Sr3Ru2O7 | Thermal conductivity of Sr3Ru2O7 was measured down to 40 mK and at magnetic fields through the quantum critical endpoint at H_c = 7.85 T. A peak in the electrical resistivity as a function of field was mimicked by the thermal resistivity. In the limit as T -> 0 K we find that the Wiedemann-Franz law is satisfied to wit... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
88518434 | math/0602430 | 2006-02-20 | Accuracy of Diffusion Approximations for High Frequency Markov Data | We consider triangular arrays of Markov chains that converge weakly to a diffusion process. Edgeworth type expansions of third order for transition densities are proved. This is done for time horizons that converge to 0. For this purpose we represent the transition density as a functional of densities of sums of i.i.d.... | [
"math.PR",
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"stat.TH"
] | null | [
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{
"author_id": "v konakov_1",
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{
"author_id": "e mammen_1",
"name": "Enno Mammen",
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6702415 | hep-th/0602188 | 2006-02-20 | Rotating Black Holes at Future Colliders. III. Determination of Black Hole Evolution | TeV scale gravity scenario predicts that the black hole production dominates over all other interactions above the scale and that the Large Hadron Collider will be a black hole factory. Such higher dimensional black holes mainly decay into the standard model fields via the Hawking radiation whose spectrum can be comput... | [
"hep-th",
"gr-qc",
"hep-ph"
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{
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1168601 | cs/0602072 | 2006-02-20 | Turbo Decoding on the Binary Erasure Channel: Finite-Length Analysis and Turbo Stopping Sets | This paper is devoted to the finite-length analysis of turbo decoding over the binary erasure channel (BEC). The performance of iterative belief-propagation (BP) decoding of low-density parity-check (LDPC) codes over the BEC can be characterized in terms of stopping sets. We describe turbo decoding on the BEC which is ... | [
"cs.IT",
"math.IT"
] | null | [
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{
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{
"author_id": "ø ytrehus_1",
"name": "Øyvind Ytrehus",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119337254 | astro-ph/0602473 | 2006-02-21 | The Mass-Metallicity Relation at z~2 | We use a sample of 87 rest-frame UV-selected star-forming galaxies with mean spectroscopic redshift z=2.26 to study the correlation between metallicity and stellar mass at high redshift. Using stellar masses determined from SED fitting to 0.3-8 micron photometry, we divide the sample into six bins in stellar mass, and ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16490785 | math/0602479 | 2006-02-21 | Spectral gaps in Wasserstein distances and the 2D stochastic Navier--Stokes equations | We develop a general method to prove the existence of spectral gaps for Markov semigroups on Banach spaces. Unlike most previous work, the type of norm we consider for this analysis is neither a weighted supremum norm nor an ${\L}^p$-type norm, but involves the derivative of the observable as well and hence can be seen... | [
"math.PR",
"math-ph",
"math.AP",
"math.DS",
"math.MP",
"math.SP"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "m hairer_1",
"name": "Martin Hairer",
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"num_papers": null,
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},
{
"author_id": "j mattingly_1",
"name": "Jonathan [\"C.\"] Mattingly",
"publication_history": null,
"h_index": null,
"num_p... | null |
15994867 | gr-qc/0602085 | 2006-02-21 | Black Holes and Generalized Scalar Field | We study the possibility of occurrence of scalar hair with a non-canonical kinetic term for a static, spherically symmetric asymptotically flat black hole spacetime. We first obtain a general equation for this purpose and then consider various examples for the kinetic term $F(X)$ with $X=-{1\over{2}}\partial^{\mu}\phi\... | [
"gr-qc"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m jankiewicz_0",
"name": "Marcin Jankiewicz",
"publication_history": null,
"h_index": null,
"num_papers": null,
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},
{
"author_id": "a sen_2",
"name": "Anjan [\"Ananda\"] Sen",
"publication_history": null,
"h_index": null,
"num_pape... | null |
18013861 | math/0602454 | 2006-02-21 | On the rational subset problem for groups | We use language theory to study the rational subset problem for groups and monoids. We show that the decidability of this problem is preserved under graph of groups constructions with finite edge groups. In particular, it passes through free products amalgamated over finite subgroups and HNN extensions with finite asso... | [
"math.GR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10548469 | cs/0602075 | 2006-02-21 | The approximability of MAX CSP with fixed-value constraints | In the maximum constraint satisfaction problem (MAX CSP), one is given a finite collection of (possibly weighted) constraints on overlapping sets of variables, and the goal is to assign values from a given finite domain to the variables so as to maximize the number (or the total weight, for the weighted case) of satisf... | [
"cs.CC"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
16358048 | astro-ph/0602486 | 2006-02-22 | An X-ray bright ERO hosting a type 2 QSO | We present the XMM-Newton and the optical-VLT spectra along with the optical and the near-infrared photometric data of one of the brightest X-ray (F(2-10 keV)~1e-13 erg/s cm^2) extremely red objects (R-K>=5) discovered so far. The source, XBSJ0216-0435, belongs to the XMM-Newton Bright Serendipitous Survey and it has e... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1449927 | cond-mat/0602523 | 2006-02-22 | A stochastic Trotter integration scheme for dissipative particle dynamics | In this article we show in details the derivation of an integration scheme for the dissipative particle dynamic model (DPD) using the stochastic Trotter formula [De Fabritiis et al., Physica A, 361, 429 (2006)]. We explain some subtleties due to the stochastic character of the equations and exploit analyticity in some ... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m serrano_2",
"name": "Mar Serrano",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g fabritiis_1",
"name": "Gianni [\"De\"] Fabritiis",
"publication_history": null,
"h_index": null,
"num_pape... | null |
119435034 | cond-mat/0602528 | 2006-02-22 | High-dimensional fractionalization and spinon deconfinement in pyrochlore antiferromagnets | The ground states of Klein type spin models on the pyrochlore and checkerboard lattice are spanned by the set of singlet dimer coverings, and thus possess an extensive ground--state degeneracy. Among the many exotic consequences is the presence of deconfined fractional excitations (spinons) which propagate through the ... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "z nussinov_1",
"name": "Zohar Nussinov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c batista_1",
"name": "Cristian [\"D.\"] Batista",
"publication_history": null,
"h_index": null,
"num_pa... | null |
17522950 | astro-ph/0602514 | 2006-02-23 | ESO Imaging Survey: infrared observations of CDF-S and HDF-S | This paper presents infrared data obtained from observations carried out at the ESO 3.5m New Technology Telescope (NTT) of the Hubble Deep Field South (HDF-S) and the Chandra Deep Field South (CDF-S). These data were taken as part of the ESO Imaging Survey (EIS) program, a public survey conducted by ESO to promote foll... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "10775851",
"num_citations": null
}
] | [
{
"author_id": "l olsen_1",
"name": "L. [\"F.\"] Olsen",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j miralles_1",
"name": "J. [\"M.\"] Miralles",
"publication_history": null,
"h_index": null,
"num_papers... | null |
119396208 | cond-mat/0602569 | 2006-02-23 | Intermediate Symmetries In Electronic Systems: Dimensional Reduction, Order Out Of Disorder, Dualities, And Fractionalization | We discuss symmetries intermediate between global and local and formalize the notion of dimensional reduction adduced from such symmetries. We apply this generalization to several systems including liquid crystalline phases of Quantum Hall systems, transition metal orbital systems, frustrated spin systems, (p+ip) super... | [
"cond-mat.str-el",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "z nussinov_1",
"name": "Zohar Nussinov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c batista_1",
"name": "Cristian [\"D.\"] Batista",
"publication_history": null,
"h_index": null,
"num_pa... | null |
18979813 | math/0602529 | 2006-02-23 | Statistical Romberg extrapolation: A new variance reduction method and applications to option pricing | We study the approximation of $\mathbb{E}f(X_T)$ by a Monte Carlo algorithm, where $X$ is the solution of a stochastic differential equation and $f$ is a given function. We introduce a new variance reduction method, which can be viewed as a statistical analogue of Romberg extrapolation method. Namely, we use two Euler ... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2527159 | hep-th/0602246 | 2006-02-23 | Locally stable non-supersymmetric Minkowski vacua in supergravity | We perform a general study about the existence of non-supersymmetric minima with vanishing cosmological constant in supergravity models involving only chiral superfields. We study the conditions under which the matrix of second derivatives of the scalar potential is positive definite. We show that there exist very simp... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118955875 | astro-ph/0602495 | 2006-02-23 | "Anomalous" Optical GRB Afterglows are Common: Two z~4 Bursts, GRB 060206 and 060210 | We report on two recent z~4 gamma-ray bursts (GRBs), GRB 060206 and GRB 060210, for which we have obtained well-sampled optical light curves. Our data, combined with early optical data reported in the literature, shows unusual behavior for both afterglows. In R-band GRB 060206 (z=4.045) experienced a slow early decay, ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18307931 | math/0602523 | 2006-02-23 | Exact simulation of diffusions | We describe a new, surprisingly simple algorithm, that simulates exact sample paths of a class of stochastic differential equations. It involves rejection sampling and, when applicable, returns the location of the path at a random collection of time instances. The path can then be completed without further reference to... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
159594 | quant-ph/0603161 | 2006-02-24 | Quantum Computation as Geometry | Quantum computers hold great promise, but it remains a challenge to find efficient quantum circuits that solve interesting computational problems. We show that finding optimal quantum circuits is essentially equivalent to finding the shortest path between two points in a certain curved geometry. By recasting the proble... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14160877 | math/0602559 | 2006-02-24 | Sparse reconstruction by convex relaxation: Fourier and Gaussian measurements | We want to exactly reconstruct a sparse signal f (a vector in R^n of small support) from few linear measurements of f (inner products with some fixed vectors). A nice and intuitive reconstruction by Linear Programming has been advocated since 80-ies by Dave Donoho and his collaborators. Namely, one can relax the recons... | [
"math.NA",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10200229 | math/0602548 | 2006-02-24 | Logarithmic Sobolev Inequalities for Inhomogeneous Markov Semigroups | We investigate the dissipativity properties of a class of scalar second order parabolic partial differential equations with time-dependent coefficients. We provide explicit condition on the drift term which ensure that the relative entropy of one particular orbit with respect to some other one decreases to zero. The de... | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
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