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118982942
gr-qc/0010092
2000-10-25
Late time acceleration in Brans Dicke Cosmology
In this work we have investigated the possibility of having a late time accelerated phase of the universe, suggested by recent supernova observation, in the context of Brans Dicke (BD) theory with a symmetry breaking potential and a matter field. We find that a perfect fluid matter field (pressureless and with pressure...
[ "gr-qc", "astro-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "s sen_2", "name": "Sauvik Sen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a sen_2", "name": "Anjan [\"A\"] Sen", "publication_history": null, "h_index": null, "num_papers": null, "num...
null
15567435
hep-ph/0010308
2000-10-26
The flavor of neutrinos in muon decays at a neutrino factory and the LSND puzzle
The accurate prediction of the neutrino beam produced in muon decays and the absence of opposite helicity contamination for a particular neutrino flavor make a future neutrino factory the ideal place to look for the lepton flavor violating (LFV) decays of the kind $\mu^+\ra e^+\nuebar\numu$ and lepton number violating ...
[ "hep-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a bueno_1", "name": "Antonio Bueno", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m campanelli_3", "name": "Mario Campanelli", "publication_history": null, "h_index": null, "num_papers": nul...
null
16873787
hep-lat/0010044
2000-10-26
Vortices versus monopoles in color confinement
We construct the creation operator of a vortex for SU(2) pure gauge theory using the methods developed for monopoles. We interpret its vacuum expectation value as a disorder parameter for the deconfinement phase transition and find that it behaves in the vacuum in a similar way to monopoles. Results are extrapolated to...
[ "hep-lat" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "l debbio_1", "name": "Luigi [\"Del\"] Debbio", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a giacomo_1", "name": "Adriano [\"di\"] Giacomo", "publication_history": null, "h_index": null, "n...
null
43415296
cond-mat/0010405
2000-10-26
Steady State Thermodynamics of Langevin Systems
We study Langevin dynamics describing nonequilibirum steady states. Employing the phenomenological framework of steady state thermodynamics constructed by Oono and Paniconi [Prog. Theor. Phys. Suppl. {\bf130}, 29 (1998)], we find that the extended form of the second law which they proposed holds for transitions between...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7885542
cond-mat/0010455
2000-10-27
Statistical physics of adaptive correlation of agents in a market
Recent results and interpretations are presented for the thermal minority game, concentrating on deriving and justifying the fundamental stochastic differential equation for the microdynamics.
[ "cond-mat.stat-mech", "cond-mat.dis-nn", "q-fin.ST" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "d sherrington_1", "name": "David Sherrington", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j garrahan_1", "name": "Juan [\"P.\"] Garrahan", "publication_history": null, "h_index": null, "nu...
null
16378273
astro-ph/0010604
2000-10-30
Multi-color Classification in the Calar Alto Deep Imaging Survey
We use a multi-color classification method introduced by Wolf, Meisenheimer & Roeser (2000) to reliably identify stars, galaxies and quasars in the up to 16-dimensional color space provided by the filter set of the Calar Alto Deep Imaging Survey (CADIS). The samples of stars, galaxies and quasars obtained this way have...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
12697521
gr-qc/0010108
2000-10-30
Relativistic theory for time and frequency transfer to order c^{-3}
This paper is motivated by the current development of several space missions (e.g. ACES on International Space Station) that will fly on Earth orbit laser cooled atomic clocks, providing a time-keeping accuracy of the order of 5~10^{-17} in fractional frequency. We show that to such accuracy, the theory of frequency tr...
[ "gr-qc" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118610359
nlin/0010051
2000-10-30
The thunder of distant Net storms
Computers and routers on the Internet send each other error messages (called ICMP datagrams) to signal conditions such as network congestion or blackouts. While these datagrams are very rare, less than 0.001% of total traffic, they hold very important global information about problems and congestions elsewhere in the N...
[ "nlin.AO" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m magnasco_1", "name": "Marcelo [\"O.\"] Magnasco", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
12232120
astro-ph/0010645
2000-10-31
Resolving Sirius-like binaries with the Hubble Space Telescope
We present initial results from a Hubble Space Telescope ultraviolet imaging survey of stars known to have hot white-dwarf companions which are unresolved from the ground. The hot companions, discovered through their EUV or UV emission, are hidden by the overwhelming brightnesses of the primary stars at visible wavelen...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15829847
astro-ph/0011001
2000-11-01
A universal angular momentum profile for galactic halos
[Abridged] We study the angular-momentum profiles of a statistical sample of halos drawn from a high-resolution N-body simulation of the LCDM cosmology. We find that the cumulative mass distribution of specific angular momentum, j, in a halo of mass Mv is well fit by a universal function, M(<j) = Mv \mu j/(j_0+j). This...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8475823
gr-qc/0011004
2000-11-01
Studies of the Schroedinger-Newton Equations in D Dimensions
We investigate a $D$ dimensional generalization of the Schroedinger-Newton equations, which purport to describe quantum state reduction as resulting from gravitational effects. For a single particle, the system is a combination of the Schroedinger and Poisson equations modified so that the probability density of the wa...
[ "gr-qc" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r melko_1", "name": "Roger [\"G.\"] Melko", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "r mann_1", "name": "Robert [\"B.\"] Mann", "publication_history": null, "h_index": null, "num_papers"...
null
32796458
cond-mat/0011042
2000-11-02
From Minority Games to real markets
We address the question of market efficiency using the Minority Game (MG) model. First we show that removing unrealistic features of the MG leads to models which reproduce a scaling behavior close to what is observed in real markets. In particular we find that i) fat tails and clustered volatility arise at the phase tr...
[ "cond-mat.stat-mech", "cond-mat.dis-nn", "q-fin.TR" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "d challet_2", "name": "Damien Challet", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a chessa_1", "name": "Alessandro Chessa", "publication_history": null, "h_index": null, "num_papers": nul...
null
2862151
math/0011019
2000-11-02
Recurrence of Distributional Limits of Finite Planar Graphs
Suppose that $G_j$ is a sequence of finite connected planar graphs, and in each $G_j$ a special vertex, called the root, is chosen randomly-uniformly. We introduce the notion of a distributional limit $G$ of such graphs. Assume that the vertex degrees of the vertices in $G_j$ are bounded, and the bound does not depend ...
[ "math.PR", "math-ph", "math.CO", "math.MG", "math.MP" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
409876
cond-mat/0011029
2000-11-02
Competition and multiscaling in evolving networks
The rate at which nodes in a network increase their connectivity depends on their fitness to compete for links. For example, in social networks some individuals acquire more social links than others, or on the www some webpages attract considerably more links than others. We find that this competition for links transla...
[ "cond-mat.dis-nn", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16077521
cond-mat/0011094
2000-11-06
Organization of Growing Random Networks
The organizational development of growing random networks is investigated. These growing networks are built by adding nodes successively and linking each to an earlier node of degree k with attachment probability A_k. When A_k grows slower than linearly with k, the number of nodes with k links, N_k(t), decays faster th...
[ "cond-mat.stat-mech", "cond-mat.dis-nn", "nlin.AO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2549589
cs/0011012
2000-11-07
Causes and Explanations: A Structural-Model Approach, Part I: Causes
We propose a new definition of actual cause, using structural equations to model counterfactuals. We show that the definition yields a plausible and elegant account of causation that handles well examples which have caused problems for other definitions and resolves major difficulties in the traditional account.
[ "cs.AI" ]
null
[ "target.author.publication_history.key_reference", "target.key_reference" ]
null
null
null
356833
hep-th/0011040
2000-11-07
Conformal Four Point Functions and the Operator Product Expansion
Various aspects of the four point function for scalar fields in conformally invariant theories are analysed. This depends on an arbitrary function of two conformal invariants u,v. A recurrence relation for the function corresponding to the contribution of an arbitrary spin field in the operator product expansion to the...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
4398178
physics/0011016
2000-11-07
Nonlinear limits to the information capacity of optical fiber communications
The exponential growth in the rate at which information can be communicated through an optical fiber is a key element in the so called information revolution. However, like all exponential growth laws, there are physical limits to be considered. The nonlinear nature of the propagation of light in optical fiber has made...
[ "physics.data-an", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118988463
cond-mat/0011128
2000-11-08
An entropy-driven noise-induced phase transition
We introduce a class of exactly solvable models which exhibit an ordering noise-induced phase transition driven by an entropic mechanism. In contrast with previous studies, order does not appear in this case as a result of an instability of the disordered phase produced by noise, but of a balance between the relaxing d...
[ "cond-mat" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m ibañes_1", "name": "Marta Ibañes", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "j garcía-ojalvo_1", "name": "Jordi García-Ojalvo", "publication_history": null, "h_index": null, "num_papers...
null
15914657
gr-qc/0011030
2000-11-08
The dipolar zero-modes of Einstein action: An informal summary with some new issues
We recall the main features of metric vacuum fluctuations which have the global property int d^4x sqrt{g(x)} R(x) = 0, even though R(x) does not vanish locally. We stress that these fluctuations could mediate an anomalous coupling between the gravitational field and coherent matter. Some new issues are discussed: (1) t...
[ "gr-qc" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "119435374", "num_citations": null } ]
[ { "author_id": "g modanese_1", "name": "G. Modanese", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
15571182
hep-lat/0011048
2000-11-09
Monopoles, vortices and confinement in SU(3) gauge theory
We compute, in SU(3) pure gauge theory, the vacuum expectation value (vev) of the operator which creates a $Z_3$ vortex wrapping the lattice through periodic boundary conditions (dual Polyakov line). The technique used is the same already tested in the SU(2) case. The dual Polyakov line proves to be a good disorder par...
[ "hep-lat" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "9509134", "num_citations": null }, { "corpus_id": "7933127", "num_citations": null } ]
[ { "author_id": "l debbio_1", "name": "Luigi [\"Del\"] Debbio", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a giacomo_1", "name": "Adriano [\"di\"] Giacomo", "publication_history": null, "h_index": null, "n...
null
206327094
quant-ph/0011035
2000-11-09
Entanglement and Extreme Spin Squeezing
For any mean value of a cartesian component of a spin vector we identify the smallest possible uncertainty in any of the orthogonal components. The corresponding states are optimal for spectroscopy and atomic clocks. We show that the results for different spin J can be used to identify entanglement and to quantity the ...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17628238
astro-ph/0011223
2000-11-10
The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
We report data for $I$ band Surface Brightness Fluctuation (SBF) magnitudes, V-I colors, and distance moduli for 300 galaxies. The Survey contains E, S0 and early-type spiral galaxies in the proportions of 49:42:9, and is essentially complete for E galaxies to Hubble velocities of 2000 km/s, with a substantial sampling...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5726852
hep-ex/0011036
2000-11-10
Inclusive Jet Production in pbar p Collisions
We report a new measurement of the pseudorapidity (eta) and transverse-energy (Et) dependence of the inclusive jet production cross section in pbar b collisions at sqrt(s) = 1.8 TeV using 95 pb**-1 of data collected with the DZero detector at the Fermilab Tevatron. The differential cross section d^2sigma/dEt deta is pr...
[ "hep-ex" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "b abbott_2", "name": "B. Abbott", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a abdesselam_1", "name": "Abdelouahab Abdesselam", "publication_history": null, "h_index": null, "num_papers": ...
null
825275
astro-ph/0011212
2000-11-10
Simulations of Deep Pencil-Beam Redshift Surveys
We create mock pencil-beam redshift surveys from very large cosmological $N$-body simulations of two Cold Dark Matter cosmogonies, an Einstein-de Sitter model ($\tau$CDM) and a flat model with $\Omega_0 =0.3$ and a cosmological constant ($\Lambda$CDM). We use these to assess the significance of the apparent periodicity...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14629741
astro-ph/0011215
2000-11-10
New Results on the Helium Stars in the Galactic Center Using BEAR Spectro-Imagery
Integral field spectroscopy of the central parsec of the Galactic Center was obtained at 2.06 microns using BEAR, an imaging Fourier Transform Spectrometer, at a spectral resolution of 74 km/s. Sixteen stars were confirmed as helium stars by detecting the He I 2.058 microns line in emission, providing a homogeneous set...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14266008
cond-mat/0011181
2000-11-10
Simplest random K-satisfiability problem
We study a simple and exactly solvable model for the generation of random satisfiability problems. These consist of $\gamma N$ random boolean constraints which are to be satisfied simultaneously by $N$ logical variables. In statistical-mechanics language, the considered model can be seen as a diluted p-spin model at ze...
[ "cond-mat.dis-nn", "cond-mat.stat-mech", "cs.CC" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2941153
cond-mat/0011174
2000-11-10
An efficient, multiple range random walk algorithm to calculate the density of states
We present a new Monte Carlo algorithm that produces results of high accuracy with reduced simulational effort. Independent random walks are performed (concurrently or serially) in different, restricted ranges of energy, and the resultant density of states is modified continuously to produce locally flat histograms. Th...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16765079
cs/0011015
2000-11-11
A Decomposition Theorem for Maximum Weight Bipartite Matchings
Let G be a bipartite graph with positive integer weights on the edges and without isolated nodes. Let n, N and W be the node count, the largest edge weight and the total weight of G. Let k(x,y) be log(x)/log(x^2/y). We present a new decomposition theorem for maximum weight bipartite matchings and use it to design an O(...
[ "cs.DS", "cs.DM" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
1096177
quant-ph/0011046
2000-11-12
Quantum Algorithmic Entropy
We extend algorithmic information theory to quantum mechanics, taking a universal semicomputable density matrix (``universal probability'') as a starting point, and define complexity (an operator) as its negative logarithm. A number of properties of Kolmogorov complexity extend naturally to the new domain. Approximatel...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18375451
cond-mat/0011224
2000-11-13
Bose-Einstein condensation in complex networks
The evolution of many complex systems, including the world wide web, business and citation networks is encoded in the dynamic web describing the interactions between the system's constituents. Despite their irreversible and non-equilibrium nature these networks follow Bose statistics and can undergo Bose-Einstein conde...
[ "cond-mat.dis-nn", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5066342
quant-ph/0011055
2000-11-13
NMR implementation of a building block for scalable quantum computation
We report the implementation of the central building block of the Schulman-Vazirani procedure for fully polarizing a subset of two-level quantum systems which are initially only partially polarized. This procedure consists of a sequence of unitary operations and incurs only a quasi-linear overhead in the number of quan...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11557575
hep-th/0011127
2000-11-14
The evolution of unstable black holes in anti-de Sitter space
We examine the thermodynamic stability of large black holes in four-dimensional anti-de Sitter space, and we demonstrate numerically that black holes which lack local thermodynamic stability often also lack stability against small perturbations. This shows that no-hair theorems do not apply in anti-de Sitter space. A h...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
5439977
math/0011092
2000-11-14
On the mixing time of simple random walk on the super critical percolation cluster
We study the robustness under perturbations of mixing times, by studying mixing times of random walks in percolation clusters inside boxes in $\Z^d$. We show that for $d \geq 2$ and $p > p_c(\Z^d)$, the mixing time of simple random walk on the largest cluster inside $\{-n,...,n\}^d$ is $\Theta(n^2)$ - thus the mixing t...
[ "math.PR", "math.CO" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "i benjamini_1", "name": "Itai Benjamini", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e mossel_1", "name": "Elchanan Mossel", "publication_history": null, "h_index": null, "num_papers": nul...
null
1844824
astro-ph/0011279
2000-11-14
Close stellar encounters with planetesimal discs: The dynamics of asymmetry in the Beta Pictoris system
We numerically investigate the dynamics of how a close stellar fly-by encounter of a symmetrical circumstellar planetesimal disc can give rise to the many kinds of asymmetries and substructures attributed to the edge-on dusty disc of Beta Pic. In addition we present new optical coronagraphic observations of the outer p...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
53665453
cond-mat/0011250
2000-11-15
Ising models of quantum frustration
We report on a systematic study of two dimensional, periodic, frustrated Ising models with a quantum dynamics introduced via a transverse magnetic field. The systems studied are the triangular and kagome lattice antiferromagnets, fully frustrated models on the square and hexagonal (honeycomb) lattices, a planar analog ...
[ "cond-mat.stat-mech", "cond-mat.dis-nn", "cond-mat.str-el" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
15511301
astro-ph/0011286
2000-11-15
Photometric and Spectroscopic Analysis of Cool White Dwarfs with Trigonometric Parallax Measurements
A photometric and spectroscopic analysis of 152 cool white dwarf stars is presented. The discovery of 7 new DA white dwarfs, 2 new DQ white dwarfs, 1 new magnetic white dwarf, and 3 weak magnetic white dwarf candidates, is reported, as well as 19 known or suspected double degenerates. The photometric energy distributio...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
42232041
cond-mat/0011302
2000-11-17
Generation of unpredictable time series by a Neural Network
A perceptron that learns the opposite of its own output is used to generate a time series. We analyse properties of the weight vector and the generated sequence, like the cycle length and the probability distribution of generated sequences. A remarkable suppression of the autocorrelation function is explained, and conn...
[ "cond-mat.dis-nn" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "r metzler_1", "name": "Richard Metzler", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "w kinzel_1", "name": "Wolfgang Kinzel", "publication_history": null, "h_index": null, "num_papers": null...
null
33723799
gr-qc/0011059
2000-11-17
Gravitational Entropy and Quantum Cosmology
We investigate the evolution of different measures of ``Gravitational Entropy'' in Bianchi type I and Lema\^itre-Tolman universe models. A new quantity behaving in accordance with the second law of thermodynamics is introduced. We then go on and investigate whether a quantum calculation of initial conditions for the un...
[ "gr-qc" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9654517
astro-ph/0011332
2000-11-17
Large Scale Structure
Catalogues of galaxies, clusters of galaxies and superclusters - sources of information to study the large-scale structure of the Universe are reviewed. The power spectrum of density perturbations, and the correlation function are discussed as principal description functions which characterize the large-scale structure...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17554936
hep-ex/0011057
2000-11-17
Kernel Estimation in High-Energy Physics
Kernel Estimation provides an unbinned and non-parametric estimate of the probability density function from which a set of data is drawn. In the first section, after a brief discussion on parametric and non-parametric methods, the theory of Kernel Estimation is developed for univariate and multivariate settings. The se...
[ "hep-ex" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
60004
cs/0011026
2000-11-20
When Can You Fold a Map?
We explore the following problem: given a collection of creases on a piece of paper, each assigned a folding direction of mountain or valley, is there a flat folding by a sequence of simple folds? There are several models of simple folds; the simplest one-layer simple fold rotates a portion of paper about a crease in t...
[ "cs.CG", "cs.DM" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e arkin_1", "name": "Esther [\"M.\"] Arkin", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "m bender_3", "name": "Michael [\"A.\"] Bender", "publication_history": null, "h_index": null, "num_p...
null
2274752
hep-ph/0011243
2000-11-20
O'Mega: An Optimizing Matrix Element Generator
I sketch the architecture of O'Mega, a new optimizing compiler for tree amplitudes in quantum field theory. O'Mega generates the most efficient code currently available for scattering amplitudes for many polarized particles in the standard model. A complete infrastructure for physics beyond the standard model is provid...
[ "hep-ph", "hep-ex", "physics.comp-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14212336
physics/0011047
2000-11-20
A Method to Extract Potentials from the Temperature Dependence of Langmuir Constants for Clathrate-Hydrates
It is shown that the temperature dependence of Langmuir constants contains all the information needed to determine spherically averaged intermolecular potentials. An analytical ``inversion'' method based on the standard statistical model of van der Waals and Platteeuw is presented which extracts cell potentials directl...
[ "physics.chem-ph", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m bazant_1", "name": "Martin [\"Z.\"] Bazant", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "b trout_0", "name": "Bernhardt [\"L.\"] Trout", "publication_history": null, "h_index": null, "num...
null
14814434
hep-th/0011179
2000-11-20
A two point function in a cascading N=1 gauge theory from supergravity
We compute the two point correlation function of a dimension 4 operator in a nonconformal cascading N=1 SUSY gauge theory using the supergravity dual found by Klebanov and Strassler[hep-th/0007191]. The two point function has a logarithmic correction to conformal behavior which is related to the scale dependence of the...
[ "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
13227504
cs/0011032
2000-11-21
Top-down induction of clustering trees
An approach to clustering is presented that adapts the basic top-down induction of decision trees method towards clustering. To this aim, it employs the principles of instance based learning. The resulting methodology is implemented in the TIC (Top down Induction of Clustering trees) system for first order clustering. ...
[ "cs.LG" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "9841360", "num_citations": null } ]
[ { "author_id": "h blockeel_1", "name": "Hendrik Blockeel", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l raedt_1", "name": "Luc [\"De\"] Raedt", "publication_history": null, "h_index": null, "num_papers": ...
null
60455
cs/0011033
2000-11-22
Web Mining Research: A Survey
With the huge amount of information available online, the World Wide Web is a fertile area for data mining research. The Web mining research is at the cross road of research from several research communities, such as database, information retrieval, and within AI, especially the sub-areas of machine learning and natura...
[ "cs.LG", "cs.DB" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119404182
cond-mat/0011389
2000-11-22
Statistical thermodynamics of quantum Brownian motion: Birth of perpetuum mobile of the second kind
The Brownian motion of a quantum particle in a harmonic confining potential and coupled to a harmonic quantum thermal bath is exactly solvable. It is shown that at low enough temperatures the stationary state is non-Gibbsian due to an entanglement with the bath. In physical terms, this happens when the cloud of bath mo...
[ "cond-mat.stat-mech", "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "t nieuwenhuizen_1", "name": "Theo [\"M.\"] Nieuwenhuizen", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a allahverdyan_1", "name": "Armen [\"E.\"] Allahverdyan", "publication_history": null, "h_...
null
5361669
astro-ph/0011405
2000-11-22
Giant cluster arcs as a constraint on the scattering cross-section of dark matter
We carry out ray tracing through five high resolution simulations of a galaxy cluster to study how its ability to produce giant gravitationally lensed arcs is influenced by the collision cross-section of its dark matter. In three cases typical dark matter particles in the cluster core undergo between 1 and 100 collisio...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "4847778", "num_citations": null }, { "corpus_id": "5644398", "num_citations": null }, { "corpus_id": "18555625", "num_citations": null }, { "corpus_id": "444610", "num_citations": null }, { "corpus_id": "17750355", "num_citations": null } ]
[ { "author_id": "m meneghetti_2", "name": "Massimo Meneghetti", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "n yoshida_1", "name": "Naoki Yoshida", "publication_history": null, "h_index": null, "num_papers":...
null
2612049
nlin/0011045
2000-11-23
Classical dynamics on graphs
We consider the classical evolution of a particle on a graph by using a time-continuous Frobenius-Perron operator which generalizes previous propositions. In this way, the relaxation rates as well as the chaotic properties can be defined for the time-continuous classical dynamics on graphs. These properties are given a...
[ "nlin.CD", "cond-mat.stat-mech", "nlin.CG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
7720740
cs/0011036
2000-11-23
Automatic Termination Analysis of Programs Containing Arithmetic Predicates
For logic programs with arithmetic predicates, showing termination is not easy, since the usual order for the integers is not well-founded. A new method, easily incorporated in the TermiLog system for automatic termination analysis, is presented for showing termination in this case. The method consists of the following...
[ "cs.PL" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "n dershowitz_1", "name": "Nachum Dershowitz", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "n lindenstrauss_0", "name": "Naomi Lindenstrauss", "publication_history": null, "h_index": null, "n...
null
17593464
astro-ph/0011490
2000-11-27
Modelling Horizontal Air Showers Induced by Cosmic Rays
We present a framework for the study of muon density patterns on the ground due to showers produced in the atmosphere by cosmic rays incident at high zenith angles. As a checking procedure predictions of a model based on such a framework are compared to simulation results.
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18709176
astro-ph/0011495
2000-11-27
The mass of a halo
We discuss the different definitions of the mass of a halo in common use and how one may convert between them. Using N-body simulations we show that mass estimates based on spherical averages are much more tightly correlated with each other than with masses based on the number of particles in a halo. The mass functions...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
17323951
astro-ph/0011498
2000-11-27
The European Photon Imaging Camera on XMM-Newton: The MOS Cameras
The EPIC focal plane imaging spectrometers on XMM-Newton use CCDs to record the images and spectra of celestial X-ray sources focused by the three X-ray mirrors. There is one camera at the focus of each mirror; two of the cameras contain seven MOS CCDs, while the third uses twelve PN CCDs, defining a circular field of ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6708419
astro-ph/0011497
2000-11-27
Database of Geneva stellar evolution tracks and isochrones for UBVRIJHKLL'M, HST-WFPC2, Geneva and Washington photometric systems
We have used an updated version of the empirically and semi-empirically calibrated BaSeL library of synthetic stellar spectra of Lejeune et al. (1997, 1998) and Westera et al. (1999) to calculate synthetic photometry in the UBVRIJHKLL'M, HST-WFPC2, Geneva, and Washington systems for the entire set of non-rotating Genev...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
35915726
quant-ph/0011110
2000-11-28
Maximally entangled mixed states of two qubits
We consider mixed states of two qubits and show under which global unitary operations their entanglement is maximized. This leads to a class of states that is a generalization of the Bell states. Three measures of entanglement are considered: entanglement of formation, negativity and relative entropy of entanglement. S...
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "f verstraete_1", "name": "F. Verstraete", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "k audenaert_1", "name": "Koenraad [\"M.\",\"R.\"] Audenaert", "publication_history": null, "h_index": null,...
null
6830136
astro-ph/0011551
2000-11-29
The effect of 3-He diffusion on the pulsational spectra of DBV models
We consider envelopes of DB white dwarfs which are not composed of pure 4-He, but rather a mixture of 3-He and 4-He. Given this assumption, the same diffusive processes which produce a relatively pure H layer overlying a He layer in the DA's should work to produce a 3-He layer overlying a 4-He layer in the DB's. We exa...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "m montgomery_2", "name": "Michael [\"H\"] Montgomery", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t metcalfe_1", "name": "Travis [\"S.\"] Metcalfe", "publication_history": null, "h_index": nul...
null
3205873
cs/0011044
2000-11-29
Scaling Up Inductive Logic Programming by Learning from Interpretations
When comparing inductive logic programming (ILP) and attribute-value learning techniques, there is a trade-off between expressive power and efficiency. Inductive logic programming techniques are typically more expressive but also less efficient. Therefore, the data sets handled by current inductive logic programming sy...
[ "cs.LG" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "h blockeel_1", "name": "Hendrik Blockeel", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l raedt_1", "name": "Luc [\"De\"] Raedt", "publication_history": null, "h_index": null, "num_papers": ...
null
15752838
astro-ph/0011536
2000-11-29
Optical and infrared interferometry
Interferometric techniques are at the forefront of modern astronomical instrumentation. A new generation of instruments are either operating or nearing completion, including arrays of small telescopes as well as the ``big guns'' (VLTI and Keck). A number of space interferometers for the detection of extra-solar planets...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119451084
astro-ph/0011554
2000-11-29
The X-ray sources at the center of the supernova remnant RXJ0852.0-4622
We present a BeppoSAX observation of the X-ray source AX J0851.9-4617.4 that has been proposed as the neutron star associated to the shell like-supernova remnant RX J0852.0-4622. The image at E>5 keV shows the presence of a new source, SAX J0852.0-4615, not resolved from AX J0851.9-4617.4 in previous observations. The ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119022094
astro-ph/0011559
2000-11-30
Constraints from the Lyman alpha forest power spectrum
We use published measurements of the transmission power spectrum of the Lyman alpha forest to constrain several parameters that describe cosmology and thermal properties of the intergalactic medium (IGM). A 6 parameter grid is constructed using Particle-Mesh dark matter simulations together with scaling relations to ma...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
10865472
quant-ph/0012006
2000-12-01
Optimal encoding and decoding of a spin direction
For a system of N spins 1/2 there are quantum states that can encode a direction in an intrinsic way. Information on this direction can later be decoded by means of a quantum measurement. We present here the optimal encoding and decoding procedure using the fidelity as a figure of merit. We compute the maximal fidelity...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
11295775
cond-mat/0012009
2000-12-01
Scaling properties of scale-free evolving networks: Continuous approach
Scaling behavior of scale-free evolving networks arising in communications, citations, collaborations, etc. areas is studied. We derive universal scaling relations describing properties of such networks and indicate limits of their validity. We show that main properties of scale-free evolving networks may be described ...
[ "cond-mat" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16169837
astro-ph/0012055
2000-12-03
Populating a cluster of galaxies - I. Results at z=0
We simulate the assembly of a massive rich cluster and the formation of its constituent galaxies in a flat, low-density universe. Our most accurate model follows the collapse, the star-formation history and the orbital motion of all galaxies more luminous than the Fornax dwarf spheroidal, while dark halo structure is t...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119047622
astro-ph/0012079
2000-12-04
ATCA search for 21 cm emission from a candidate damped Ly-$\alpha$ absorber at z = 0.101
We report a deep search for 21 cm emission/absorption from the $z \sim 0.101$ candidate damped Lyman-$\alpha$ system towards PKS 0439-433, using the Australia Telescope Compact Array (ATCA). The spectrum shows a weak absorption feature --- at the $3.3 \sigma$ level --- which yields a lower limit of 730 K on the spin te...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
123429033
astro-ph/0012105
2000-12-05
The ROSAT-ESO Flux-Limited X-Ray (REFLEX) Galaxy Cluster Survey III: The Power Spectrum
We present a measure of the power spectrum on scales from 15 to 800 Mpc/h using the ROSAT-ESO Flux-Limited X-Ray(REFLEX) galaxy cluster catalogue. The REFLEX survey provides a sample of the 452 X-ray brightest southern clusters of galaxies with the nominal flux limit S=3.0 10^{-12}erg/s/cm2 for the ROSAT energy band (0...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6343114
astro-ph/0012085
2000-12-05
The Luminosity Function of Galaxies in SDSS Commissioning Data
During commissioning observations, the Sloan Digital Sky Survey (SDSS) has produced one of the largest existing galaxy redshift samples selected from CCD images. Using 11,275 galaxies complete to r^* = 17.6 over 140 square degrees, we compute the luminosity function of galaxies in the r^* band over a range -23 < M < -1...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9022613
cond-mat/0012096
2000-12-06
Stability of Attractive Bose-Einstein Condensates in a Periodic Potential
Using a standing light wave trap, a stable quasi-one-dimensional attractive dilute-gas Bose-Einstein condensate can be realized. In a mean-field approximation, this phenomenon is modeled by the cubic nonlinear Schr\"odinger equation with attractive nonlinearity and an elliptic function potential of which a standing lig...
[ "cond-mat" ]
null
[ "target.author.publication_history", "target.author.publication_history.key_reference" ]
[]
[ { "author_id": "j bronski_1", "name": "Jared [\"C.\"] Bronski", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l carr_1", "name": "Lincoln [\"D.\"] Carr", "publication_history": null, "h_index": null, "num_pa...
null
6334432
math-ph/0012011
2000-12-06
Quantum lattice models at intermediate temperatures
We analyze the free energy and construct the Gibbs-KMS states for a class of quantum lattice systems, at low temperatures and when the interactions are almost diagonal in a suitable basis. We study systems with continuous symmetry, but our results are valid for discrete symmetry breaking only. Such phase transitions oc...
[ "math-ph", "math.MP" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j fröhlich_3", "name": "Jürg Fröhlich", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "l rey-bellet_1", "name": "Luc Rey-Bellet", "publication_history": null, "h_index": null, "num_papers": nu...
null
23754879
astro-ph/0012165
2000-12-07
The 2dF Galaxy Redshift Survey: The Number and Luminosity Density of Galaxies
We present the bivariate brightness distribution (BBD) for the 2dF Galaxy Redshift Survey (2dFGRS) based on a preliminary subsample of 45,000 galaxies. The BBD is an extension of the galaxy luminosity function incorporating surface brightness information. It allows the measurement of the local luminosity density, j_B, ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
264606447
math/0012064
2000-12-08
Hypersurfaces and generalized deformations
The moduli space of generalized deformations of a Calabi-Yau hypersurface is computed in terms of the Jacobian ring of the defining polynomial. The fibers of the tangent bundle to this moduli space carry algebra structures, which are identified using subalgebras of a deformed Jacobian ring.
[ "math.AG" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "j terilla_1", "name": "John Terilla", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
119715189
math/0012057
2000-12-08
Deux caracterisations de la mesure d'equilibre d'un endomorphisme de Pk(C)
Let $\mu$ be the equilibrium measure of an endomorphism of ${\sf P}^k({\bf C})$. We show that it is its unique measure of maximal entropy. We build $\mu$ directly as the distribution of any point outside an algebraic exceptional set.
[ "math.DS", "math.CV" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119009382
hep-ph/0012100
2000-12-08
Bounds on Universal Extra Dimensions
We show that the bound from the electroweak data on the size of extra dimensions accessible to all the standard model fields is rather loose. These "universal" extra dimensions could have a compactification scale as low as 300 GeV for one extra dimension. This is because the Kaluza-Klein number is conserved and thus th...
[ "hep-ph", "hep-ex", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
9087773
nlin/0012017
2000-12-10
Phase Diagram for the Winfree Model of Coupled Nonlinear Oscillators
In 1967 Winfree proposed a mean-field model for the spontaneous synchronization of chorusing crickets, flashing fireflies, circadian pacemaker cells, or other large populations of biological oscillators. Here we give the first bifurcation analysis of the model, for a tractable special case. The system displays rich col...
[ "nlin.CD", "q-bio" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119081563
cond-mat/0012164
2000-12-10
Critical Phenomena and Renormalization-Group Theory
We review results concerning the critical behavior of spin systems at equilibrium. We consider the Ising and the general O($N$)-symmetric universality classes, including the $N\to 0$ limit that describes the critical behavior of self-avoiding walks. For each of them, we review the estimates of the critical exponents, o...
[ "cond-mat.stat-mech", "hep-lat", "hep-th" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14585603
gr-qc/0012036
2000-12-10
Essentials of Classical Brane Dynamics
This article provides a self contained overview of the geometry and dynamics of relativistic brane models, of the category that includes point particle, string, and membrane representations for phenomena that can be considered as being confined to a worldsheet of the corresponding dimension (respectively one, two, and ...
[ "gr-qc" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
4313603
astro-ph/0012222
2000-12-11
The microwave background temperature at the redshift of 2.33771
The Cosmic Microwave Background radiation is a fundamental prediction of Hot Big Bang cosmology. The temperature of its black-body spectrum has been measured at the present time, $T_{\rm CMBR,0}$ = 2.726$\pm$ 0.010 K, and is predicted to have been higher in the past. At earlier time, the temperature can be measured, in...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
282759260
cs/0012004
2000-12-11
Improving Performance of heavily loaded agents
With the increase in agent-based applications, there are now agent systems that support \emph{concurrent} client accesses. The ability to process large volumes of simultaneous requests is critical in many such applications. In such a setting, the traditional approach of serving these requests one at a time via queues (...
[ "cs.MA", "cs.AI" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "f ozcan_1", "name": "Fatma Ozcan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "v subrahmanian_1", "name": "V. [\"S.\"] Subrahmanian", "publication_history": null, "h_index": null, "num_pape...
null
118072690
gr-qc/0012041
2000-12-12
The generalized teleparallel structure
It is proposed to describe a teleparallel structure as a combination of a Riemannian and a symplectic structure. The correspondent invariance group is an intersection of the orthogonal and the symplectic groups. For a 4D manifold it turns to be the basic group of the electro-week interaction $U(1)\times SU(2).$
[ "gr-qc" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "y itin_1", "name": "Y. Itin", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null } ]
null
14603641
astro-ph/0012275
2000-12-12
Near-Infrared Spectral Classification of late-M and L Dwarfs
We present near-infrared (1 to 2.5 micron) low-resolution spectroscopy of eleven ultracool dwarfs with spectral types ranging from M7 to L8. Combining our observations with data published previously by Leggett et al. (2001), we have measured equivalent widths for the strongest atomic features and constructed narrowband...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "119405559", "num_citations": null }, { "corpus_id": "12911457", "num_citations": null } ]
[ { "author_id": "i reid_1", "name": "I. [\"Neill\"] Reid", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a burgasser_1", "name": "Adam [\"J.\"] Burgasser", "publication_history": null, "h_index": null, "num_p...
null
119407900
gr-qc/0012042
2000-12-12
On the derivation of the equation of motion in a scalar model
A new method for derivation of the equation of motion from the field equation is proposed. The problem of embedding the singularities in a field satisfying the field equations is discussed.
[ "gr-qc" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "s kaniel_1", "name": "Shmuel Kaniel", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "y itin_1", "name": "Y. Itin", "publication_history": null, "h_index": null, "num_papers": null, "num_ci...
null
17892776
astro-ph/0012266
2000-12-12
The ROSAT-ESO Flux Limited X-Ray (REFLEX) Galaxy Cluster Survey I: The Construction of the Cluster Sample
We describe the construction of an X-ray flux-limited sample of galaxy clusters, the REFLEX survey catalogue, to be used for cosmological studies. The survey is based on the ROSAT All-Sky Survey and on extensive follow-up observations conducted in the frame of an ESO key program. In the paper we document the process by...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
119398406
quant-ph/0012056
2000-12-13
Theoretical efficient high capacity Quantum Key Distribution Scheme
A theoretical quantum key distribution scheme using EPR pairs is presented. This scheme is efficient in that it uses all EPR pairs in distributing the key except those chosen for checking eavesdroppers. The high capacity is achieved because each EPR pair carries 2 bits of key code.
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8911521
astro-ph/0012304
2000-12-13
The ASCA Catalog of Potential X-Ray Counterparts of GeV Sources
We present a catalog of 2-10 keV ASCA Gas Imaging Spectrometer images of fields containing bright sources of GeV emission. The images cover $\sim 85%$ of the 95% confidence position contour for 28 of the 30 sources with $> 1$ GeV fluxes above $4\times 10^{-8}$ ph ${\rm cm}^{-2} {\rm s}^{-1}$. We find an excess of hard ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
6266672
astro-ph/0012303
2000-12-13
Multi-Color Observations of the GRB000926 Afterglow
We present multi-color light-curves of the optical afterglow of GRB 000926. Beginning ~1.5 days after the burst, the light-curves of this GRB steepen measurably. The existence of such achromatic breaks are usually taken to be an important observational signature that the ejecta are not expanding isotropically, but rath...
[ "astro-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "p price_2", "name": "Paul [\"A.\"] Price", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "f harrison_1", "name": "Fiona [\"A.\"] Harrison", "publication_history": null, "h_index": null, "num_p...
null
839445
astro-ph/0012297
2000-12-13
Spectroscopy and Imaging Performance of the Liquid Xenon Gamma-Ray Imaging Telescope (LXeGRIT)
LXeGRIT is a balloon-borne Compton telescope based on a liquid xenon time projection chamber (LXeTPC) for imaging cosmic \g-rays in the energy band of 0.2-20 MeV. The detector, with 400 cm$^2$ area and 7 cm drift gap, is filled with high purity LXe. Both ionization and scintillation light signals are detected to measur...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
2879178
cond-mat/0012269
2000-12-14
Correlated adaptation of agents in a simple market: a statistical physics perspective
We discuss recent work in the study of a simple model for the collective behaviour of diverse speculative agents in an idealized stockmarket, considered from the perspective of the statistical physics of many-body systems. The only information about other agents available to any one is the total trade at time steps. Ev...
[ "cond-mat.dis-nn", "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[ { "corpus_id": "2511900", "num_citations": null }, { "corpus_id": "119093471", "num_citations": null }, { "corpus_id": "119407512", "num_citations": null }, { "corpus_id": "119503164", "num_citations": null } ]
[ { "author_id": "j garrahan_1", "name": "Juan [\"P.\"] Garrahan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "e moro_2", "name": "Esteban Moro", "publication_history": null, "h_index": null, "num_papers": n...
null
17155735
math/0012111
2000-12-14
Descent Numbers and Major Indices for the Hyperoctahedral Group
We introduce and study three new statistics on the hyperoctahedral group $B_{n}$, and show that they give two generalizations of Carlitz's identity for the descent number and major index over $S_{n}$. This answers a question posed by Foata.
[ "math.CO" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118953997
astro-ph/0012337
2000-12-15
The Power Spectrum Dependence of Dark Matter Halo Concentrations
High-resolution N-body simulations are used to examine the power spectrum dependence of the concentration of galaxy-sized dark matter halos. It is found that dark halo concentrations depend on the amplitude of mass fluctuations as well as on the ratio of power between small and virial mass scales. This finding is consi...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
118802384
quant-ph/0012074
2000-12-15
Negativity and Concurrence of mixed 2X2 states
We consider two measures of entanglement of mixed bipartite states of dimension 2X2: concurrence and negativity. We first prove the conjecture of Eisert and Plenio that concurrence can never be smaller than negativity. We then characterise all states for which concurrence equals negativity and also those states for whi...
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "k audenaert_1", "name": "Koenraad [\"M.\",\"R.\"] Audenaert", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "f verstraete_1", "name": "F. Verstraete", "publication_history": null, "h_index": null,...
null
28749184
cond-mat/0012284
2000-12-15
Breakdown of the Landauer bound for information erasure in the quantum regime
A known aspect of the Clausius inequality is that an equilibrium system subjected to a squeezing $\d S$ of its entropy must release at least an amount $|\dbarrm Q|=T|\d S|$ of heat. This serves as a basis for the Landauer principle, which puts a lower bound $T\ln 2$ for the heat generated by erasure of one bit of infor...
[ "cond-mat.stat-mech" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "a allahverdyan_1", "name": "Armen [\"E.\"] Allahverdyan", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "t nieuwenhuizen_1", "name": "Theo [\"M.\"] Nieuwenhuizen", "publication_history": null, "h_...
null
18698598
astro-ph/0012336
2000-12-15
Discriminating weak lensing from intrinsic spin correlations using the curl-gradient decomposition
The distortion field defined by the ellipticities of galaxy shapes projected on the sky can be uniquely decomposed into a gradient and a curl component. If the observed ellipticities are induced by weak gravitational lensing, then the distortion field is curl free. Here we show that, in contrast, the distortion field r...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
8207531
quant-ph/0012078
2000-12-16
Security of Quantum Key Distribution with Entangled Photons Against Individual Attacks
Security of the Ekert protocol is proven against individual attacks where an eavesdropper is allowed to share any density matrix with the two communicating parties. The density matrix spans all of the photon number states of both receivers, as well as a probe state of arbitrary dimensionality belonging to the eavesdrop...
[ "quant-ph" ]
null
[ "target.author.publication_history" ]
[]
[ { "author_id": "e waks_1", "name": "Edo Waks", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a zeevi_1", "name": "Assaf [\"J.\"] Zeevi", "publication_history": null, "h_index": null, "num_papers": null, ...
null
16844872
cond-mat/0012329
2000-12-18
Finite temperature numerical renormalization group study of the Mott-transition
Wilson's numerical renormalization group (NRG) method for the calculation of dynamic properties of impurity models is generalized to investigate the effective impurity model of the dynamical mean field theory at finite temperatures. We calculate the spectral function and self-energy for the Hubbard model on a Bethe lat...
[ "cond-mat.str-el" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
18983634
astro-ph/0012390
2000-12-18
Gravitational lensing in eclipsing binary stars
I consider the effect of the gravitational deflection of light upon the light curves of eclipsing binary stars, focussing mainly upon systems containing at least one white dwarf component. In absolute terms the effects are small, however they are strongest at the time of secondary eclipse when the white dwarf transits ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
3265133
math/0012163
2000-12-18
Learning Complexity Dimensions for a Continuous-Time Control System
This paper takes a computational learning theory approach to a problem of linear systems identification. It is assumed that input signals have only a finite number k of frequency components, and systems to be identified have dimension no greater than n. The main result establishes that the sample complexity needed for ...
[ "math.OC", "cs.LG" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
14027521
astro-ph/0012381
2000-12-18
Dynamical family properties and dark halo scaling relations of giant elliptical galaxies
Based on a uniform dynamical analysis of line-profile shapes for 21 luminous round elliptical galaxies, we have investigated the dynamical family relations of ellipticals: (i) The circular velocity curves (CVCs) of elliptical galaxies are flat to within ~10% for R>~0.2R_e. (ii) Most ellipticals are moderately radially ...
[ "astro-ph" ]
null
[ "target.author.publication_history.key_reference" ]
[ { "corpus_id": "15077430", "num_citations": null } ]
[ { "author_id": "o gerhard_1", "name": "Ortwin Gerhard", "publication_history": null, "h_index": null, "num_papers": null, "num_citations": null }, { "author_id": "a kronawitter_1", "name": "Andi Kronawitter", "publication_history": null, "h_index": null, "num_papers":...
null
51812287
hep-ph/0012252
2000-12-19
The Monte Carlo Event Generator DPMJET-III
A new version of the Monte Carlo event generator DPMJET is presented. It is a code system based on the Dual Parton Model and unifies all features of the DTUNUC-2, DPMJET-II and PHOJET 1.12 event generators. DPMJET-III allows the simulation of hadron-hadron, hadron-nucleus, nucleus-nucleus, photon-hadron, photon-photon ...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
23325931
quant-ph/0012100
2000-12-19
Probabilistic Quantum Memories
Typical address-oriented computer memories cannot recognize incomplete or noisy information. Associative (content-addressable) memories solve this problem but suffer from severe capacity shortages. I propose a model of a quantum memory that solves both problems. The storage capacity is exponential in the number of qbit...
[ "quant-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null
16921564
hep-ph/0012260
2000-12-20
Generating Feynman Diagrams and Amplitudes with FeynArts 3
This paper describes the Mathematica package FeynArts used for the generation and visualization of Feynman diagrams and amplitudes. The main features of version 3 are: generation of diagrams at three levels, user-definable model files, support for supersymmetric models, and publication-quality Feynman diagrams in PostS...
[ "hep-ph" ]
null
[ "target.author.publication_history.key_reference" ]
null
null
null