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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
18321717 | astro-ph/0002262 | 2000-02-11 | Structural and Photometric Classification of Galaxies - I. Calibration Based on a Nearby Galaxy Sample | In this paper we define an observationally robust, multi-parameter space for the classification of nearby and distant galaxies. The parameters include luminosity, color, and the image-structure parameters: size, image concentration, asymmetry, and surface brightness. Based on an initial calibration of this parameter sp... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
502641 | quant-ph/0002033 | 2000-02-11 | Multi-valued Logic Gates for Quantum Computation | We develop a multi-valued logic for quantum computing for use in multi-level quantum systems, and discuss the practical advantages of this approach for scaling up a quantum computer. Generalizing the methods of binary quantum logic, we establish that arbitrary unitary operations on any number of d-level systems (d > 2)... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1100293 | cond-mat/0002177 | 2000-02-11 | Congested Traffic States in Empirical Observations and Microscopic Simulations | We present data from several German freeways showing different kinds of congested traffic forming near road inhomogeneities, specifically lane closings, intersections, or uphill gradients. The states are localized or extended, homogeneous or oscillating. Combined states are observed as well, like the coexistence of mov... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
46132730 | cond-mat/0002174 | 2000-02-11 | Foundations of Dissipative Particle Dynamics | We derive a mesoscopic modeling and simulation technique that is very close to the technique known as dissipative particle dynamics. The model is derived from molecular dynamics by means of a systematic coarse-graining procedure. Thus the rules governing our new form of dissipative particle dynamics reflect the underly... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "e flekkøy_0",
"name": "Eirik [\"Grude\"] Flekkøy",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "p coveney_1",
"name": "Peter [\"V.\"] Coveney",
"publication_history": null,
"h_index": null,
... | null |
5595794 | astro-ph/0002266 | 2000-02-12 | Spatially resolved Spectro-photometry of M81: Age, Metallicity and Reddening Maps | In this paper, we present a multi-color photometric study of the nearby spiral galaxy M81, using images obtained with the Beijing Astronomical Observatory 60/90 cm Schmidt Telescope in 13 intermediate-band filters from 3800 to 10000{\AA}. The observations cover the whole area of M81 with a total integration of 51 hours... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "14795908",
"num_citations": null
},
{
"corpus_id": "15999131",
"num_citations": null
}
] | [
{
"author_id": "x kong_1",
"name": "Xu Kong",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "x zhou_42",
"name": "Xu Zhou",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations... | null |
15823177 | math/0002109 | 2000-02-14 | A focus on focal surfaces | We make a systematic study of the focal surface of a congruence of lines in the projective space. Using differential techniques together with techniques from intersection theory, we reobtain in particular all the invariants of the focal surface (degree, class, class of its hyperplane section, sectional genus and degree... | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
668511 | math/0002113 | 2000-02-14 | Structure and Stability of Certain Chemical Networks and Applications to the Kinetic Proofreading Model of T-Cell Receptor Signal Transduction | This paper deals with the theory of structure, stability, robustness, and stabilization for an appealing class of nonlinear systems which arises in the analysis of chemical networks. The results given here extend, but are also heavily based upon, certain previous work by Feinberg, Horn, and Jackson, of which a self-con... | [
"math.DS",
"math.OC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
26953587 | quant-ph/0002039 | 2000-02-14 | Methodology for quantum logic gate constructions | We present a general method to construct fault-tolerant quantum logic gates with a simple primitive, which is an analog of quantum teleportation. The technique extends previous results based on traditional quantum teleportation (Gottesman and Chuang, Nature {\bf 402}, 390, 1999) and leads to straightforward and systema... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
208865208 | math/0002124 | 2000-02-15 | Z_2-systolic-freedom | We give the first example of systolic freedom over torsion coefficients. The phenomenon is a bit unexpected (contrary to a conjecture of Gromov's) and more delicate than systolic freedom over the integers. | [
"math.GT",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11002186 | astro-ph/0002308 | 2000-02-16 | Collisional versus Collisionless Dark Matter | We compare the structure and substructure of dark matter halos in model universes dominated by collisional, strongly self interacting dark matter (SIDM) and collisionless, weakly interacting dark matter (CDM). While SIDM virialised halos are more nearly spherical than CDM halos, they can be rotationally flattened by as... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
444610 | astro-ph/0002362 | 2000-02-17 | Collisional dark matter and the structure of dark halos | We study how the internal structure of dark halos is affected if Cold Dark Matter particles are assumed to have a large cross-section for elastic collisions. We identify a cluster halo in a large cosmological N-body simulation and resimulate its formation with progressively increasing resolution. We compare the structu... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119028054 | quant-ph/0002048 | 2000-02-17 | The thermodynamic cost of reliability and low temperatures: Tightening Landauer's principle and the Second Law | Landauer's principle states that the erasure of one bit of information requires the free energy kT ln 2. We argue that the reliability of the bit erasure process is bounded by the accuracy inherent in the statistical state of the energy source (`the resources') driving the process. We develop a general framework descri... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
51169455 | hep-ph/0002198 | 2000-02-18 | Energy loss in perturbative QCD | We review the properties of energetic parton propagation in hot or cold QCD matter, as obtained in recent works. Advances in understanding the energy loss - collisional and radiative - are summarized, with emphasis on the latter: it features very interesting properties which may help to detect the quark-gluon plasma pr... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119343244 | cond-mat/0002299 | 2000-02-18 | Creep and depinning in disordered media | Elastic systems driven in a disordered medium exhibit a depinning transition at zero temperature and a creep regime at finite temperature and slow drive $f$. We derive functional renormalization group equations which allow to describe in details the properties of the slowly moving states in both cases. Since they hold ... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6412120 | astro-ph/0002374 | 2000-02-18 | Observations of the Crab Nebula and its pulsar in the far-ultraviolet and in the optical | We present HST/STIS far-UV observations of the Crab nebula and its pulsar. Broad, blueshifted absorption arising in the nebula is seen in C IV 1550, reaching about 2500 km/s. This can be interpreted as evidence for a fast outer shell, and we adopt a spherically symmetric model to constrain the properties of this. We fi... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10456868 | astro-ph/0002376 | 2000-02-19 | Evidence of self-interacting cold dark matter from galactic to galaxy cluster scales | Within the framework of the cold dark matter (CDM) cosmogony, a central cusp in the density profiles of virialized dark haloes is predicted. This prediction disagrees with the soft inner halo mass distribution inferred from observations of dwarf and low surface brightness galaxies, and some clusters of galaxies. By ana... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
59572799 | cond-mat/0002332 | 2000-02-21 | Gaussian to Exponential Crossover in the Attenuation of Polarization Echoes in NMR | An ingenious pulse sequence devised by S. Zhang, B. H. Meier, and R. R. Ernst (Phys. Rev. Lett. {\bf 69}, 2149 (1992)) reverses the time evolution (``spin diffusion'') of the local polarization in a dipolar coupled $^{1}$H spin system. This refocusing originates a Polarization Echo whose amplitude attenuates by increas... | [
"cond-mat",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1630998 | quant-ph/0002066 | 2000-02-23 | Quantum lower bounds by quantum arguments | We propose a new method for proving lower bounds on quantum query algorithms. Instead of a classical adversary that runs the algorithm with one input and then modifies the input, we use a quantum adversary that runs the algorithm with a superposition of inputs. If the algorithm works correctly, its state becomes entang... | [
"quant-ph",
"cs.CC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10107223 | astro-ph/0002461 | 2000-02-24 | Identification of a nearby stellar association in the Hipparcos catalog: implications for recent, local star formation | The TW Hydrae Association (~55 pc from Earth) is the nearest known region of recent star formation. Based primarily on the Hipparcos catalog, we have now identified a group of 9 or 10 co-moving star systems at a common distance (~45 pc) from Earth that appear to comprise another, somewhat older, association (``the Tuca... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118086580 | hep-ph/0002258 | 2000-02-24 | The Higgs Working Group: Summary Report | Report of the Higgs working group for the Workshop "Physics at TeV Colliders", Les Houches, France 8-18 June 1999. It contains 6 separate sections: 1. Measuring Higgs boson couplings at the LHC. 2. Higgs boson production at hadron colliders at NLO. 3. Signatures of Heavy Charged Higgs Bosons at the LHC. 4. Light stop e... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18784243 | cond-mat/0002374 | 2000-02-24 | Wealth condensation in a simple model of economy | We introduce a simple model of economy, where the time evolution is described by an equation capturing both exchange between individuals and random speculative trading, in such a way that the fundamental symmetry of the economy under an arbitrary change of monetary units is insured. We investigate a mean-field limit of... | [
"cond-mat"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119487858 | astro-ph/0002462 | 2000-02-24 | Event categories in the EDELWEISS WIMP search experiment | Four categories of events have been identified in the EDELWEISS-I dark matter experiment using germanium cryogenic detectors measuring simultaneously charge and heat signals. These categories of events are interpreted as electron and nuclear interactions occurring in the volume of the detector, and electron and nuclear... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a benoit_2",
"name": "Aurélien Benoit",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "l bergé_1",
"name": "Laurent Bergé",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
15137770 | astro-ph/0002481 | 2000-02-25 | Precise Measurement of Cosmic-Ray Proton and Helium Spectra with the BESS Spectrometer | We report cosmic-ray proton and helium spectra in energy ranges of 1 to 120 GeV and 1 to 54 GeV/nucleon, respectively, measured by a balloon flight of the BESS spectrometer in 1998. The magnetic-rigidity of the cosmic-rays was reliably determined by highly precise measurement of the circular track in a uniform solenoid... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13088746 | hep-th/0002222 | 2000-02-25 | Mirror Symmetry | We prove mirror symmetry for supersymmetric sigma models on Kahler manifolds in 1+1 dimensions. The proof involves establishing the equivalence of the gauged linear sigma model, embedded in a theory with an enlarged gauge symmetry, with a Landau-Ginzburg theory of Toda type. Standard R -> 1/R duality and dynamical gene... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119445340 | astro-ph/0002507 | 2000-02-28 | HST Photometry and Keck Spectroscopy of the Rich Cluster MS1054-03: Morphologies, Butcher-Oemler Effect and the Color-Magnitude Relation at z=0.83 | We present a study of 81 I selected, spectroscopically-confirmed members of the X-ray cluster MS1054-03 at z=0.83. Redshifts and spectral types were determined from Keck spectroscopy. Morphologies and accurate colors were determined from a large mosaic of HST WFPC2 images in F606W and F814W. Early-type galaxies constit... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18955567 | hep-th/0002240 | 2000-02-28 | Complete classification of reflexive polyhedra in four dimensions | Four dimensional reflexive polyhedra encode the data for smooth Calabi-Yau threefolds that are hypersurfaces in toric varieties, and have important applications both in perturbative and in non-perturbative string theory. We describe how we obtained all 473,800,776 reflexive polyhedra that exist in four dimensions and t... | [
"hep-th",
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9682582 | math/0002245 | 2000-02-28 | The Flag Major Index and Group Actions on Polynomial Rings | A new extension of the major index, defined in terms of Coxeter elements, is introduced. For the classical Weyl groups of type $B$, it is equidistributed with length. For more general wreath products it appears in an explicit formula for the Hilbert series of the (diagonal action) invariant algebra. | [
"math.CO",
"math.RT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15641654 | math-ph/0002052 | 2000-02-28 | Fourier's Law: a Challenge for Theorists | We present a selective overview of the current state of our knowledge (more precisely of ourignorance) regarding the derivation of Fourier's Law, ${\bf J}(\br) =-\kappa {\bf \nabla}T(\br)$; ${\bf J}$ the heat flux, $T$ the temperature and $\kappa$, the heat conductivity. This law is empirically well tested for both flu... | [
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "f bonetto_0",
"name": "Federico Bonetto",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j lebowitz_1",
"name": "Joel L. Lebowitz",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
15186584 | hep-th/0002230 | 2000-02-28 | Holographic Reconstruction of Spacetime and Renormalization in the AdS/CFT Correspondence | We develop a systematic method for renormalizing the AdS/CFT prescription for computing correlation functions. This involves regularizing the bulk on-shell supergravity action in a covariant way, computing all divergences, adding counterterms to cancel them and then removing the regulator. We explicitly work out the ca... | [
"hep-th",
"gr-qc",
"math.DG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117497188 | hep-ex/0002066 | 2000-02-29 | Inclusive Sigma+ and Sigma0 Production in Hadronic Z Decays | We report on measurements of the inclusive production rate of Sigma+ and Sigma0 baryons in hadronic Z decays collected with the L3 detector at LEP. The Sigma+ baryons are detected through the decay Sigma+ -> p pi0, while the Sigma0 baryons are detected via the decay mode Sigma0 -> Lambda gamma. The average numbers of S... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m acciarri_1",
"name": "M. Acciarri",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "p achard_1",
"name": "Pablo Achard",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
118016715 | math/0003237 | 2000-03-01 | Sur le th\'eor\`eme de l'indice des \'equations diff\'erentielles p-adiques. III | This paper works out the structure of singular points of p-adic differential equations (i.e. differential modules over the ring of functions analytic in some annulus with external radius 1). Surprisingly results look like in the formal case (differential modules over a one variable power series field) but proofs are mu... | [
"math.NT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14882154 | astro-ph/0003032 | 2000-03-02 | Non-detection of a pulsar-powered nebula in Puppis A, and implications for the nature of the radio-quiet neutron star RX J0822-4300 | We report on a deep radio search for a pulsar wind nebula associated with the radio-quiet neutron star RX J0822-4300 in the supernova remnant Puppis A. The well-determined properties of Puppis A allow us to constrain the size of any nebula to less than 30 arcsec; however we find no evidence for such a source on any spa... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "14984275",
"num_citations": null
},
{
"corpus_id": "6777734",
"num_citations": null
}
] | [
{
"author_id": "b gaensler_1",
"name": "B. [\"M.\"] Gaensler",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "d bock_1",
"name": "Douglas [\"C.-J.\"] Bock",
"publication_history": null,
"h_index": null,
"num_... | null |
358089 | astro-ph/0003035 | 2000-03-03 | J-Band Infrared Spectroscopy of a Sample of Brown Dwarfs Using Nirspec on Keck II | Near-infrared spectroscopic observations of a sample of very cool, low-mass objects are presented with higher spectral resolution than in any previous studies. Six of the objects are L-dwarfs, ranging in spectral class from L2 to L8/9, and the seventh is a methane or T-dwarf. These new observations were obtained during... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15372158 | cond-mat/0003080 | 2000-03-06 | RVB description of the low-energy singlets of the spin 1/2 kagome antiferromagnet | {Extensive calculations in the short-range RVB (Resonating valence bond) subspace on both the trimerized and the regular (non-trimerized) Heisenberg model on the kagome lattice show that short-range dimer singlets capture the specific low-energy features of both models. In the trimerized case the singlet spectrum split... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
31600845 | cond-mat/0003089 | 2000-03-06 | Quantum Dot as Spin Filter and Spin Memory | We consider a quantum dot in the Coulomb blockade regime weakly coupled to current leads and show that in the presence of a magnetic field the dot acts as an efficient spin-filter (at the single-spin level) which produces a spin-polarized current. Conversely, if the leads are fully spin-polarized the up or down state o... | [
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16489664 | astro-ph/0003068 | 2000-03-06 | An Improved Red Spectrum of the Methane or T-dwarf SDSS 1624+0029: Role of the Alkali Metals | A Keck~II low resolution spectrum shortward of ome-micron is presented for SDSS 1624+0029, the first field methane or T dwarf discovered in the Sloan Digital Sky Survey. Significant flux is detected down to the spectrum's short wavelength limit of 6200\AA. The spectrum exhibits a broad absorption feature centered at 77... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "15848181",
"num_citations": null
},
{
"corpus_id": "15706959",
"num_citations": null
}
] | [
{
"author_id": "j liebert_1",
"name": "James [\"William\"] Liebert",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i reid_1",
"name": "I. [\"Neill\"] Reid",
"publication_history": null,
"h_index": null,
"num... | null |
93606495 | cond-mat/0003084 | 2000-03-06 | Moment free energies for polydisperse systems | A polydisperse system contains particles with at least one attribute $\sigma$ (such as particle size in colloids or chain length in polymers) which takes values in a continuous range. It therefore has an infinite number of conserved densities, described by a density {\em distribution} $\rho(\sigma)$. The free energy de... | [
"cond-mat.soft",
"cond-mat.mtrl-sci",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13148151 | hep-th/0003053 | 2000-03-07 | Modular Invariant Critical Superstrings on Four-dimensional Minkowski Space $\times$ Two-dimensional Black Hole | Extending the seminal work of Bilal and Gervais, we construct a tachyon-free, modular invariant partition function for critical superstrings on four-dimensional Minkowski x two-dimensional black hole. This model may be thought of as an SL(2,R)/U(1) version of Gepner models and corresponds to a conifold point on the mod... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16620828 | astro-ph/0003087 | 2000-03-07 | Kinematics of Metal-Poor Stars in the Galaxy. III. Formation of the Stellar Halo and Thick Disk as Revealed from a Large Sample of Non-Kinematically Selected Stars | (Abbreviated) We present a detailed analysis of the space motions of 1203 solar-neighborhood stars with metal abundances [Fe/H] <= -0.6, on the basis of a recently revised and supplemented catalog of metal-poor stars selected without kinematic bias (Beers et al. 2000). This sample, having available proper motions, radi... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18544588 | astro-ph/0003101 | 2000-03-07 | Combination Frequencies in the Fourier Spectra of White Dwarfs | Combination frequencies are observed in the Fourier spectra of pulsating DA and DB white dwarfs. They appear at sums and differences of frequencies associated with the stellar gravity-modes. Brickhill (1992) proposed that the combination frequencies result from mixing of the eigenmode signals as the surface convection ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2168837 | cond-mat/0003138 | 2000-03-08 | Dislocation Kinks in Copper: Widths, Barriers, Effective Masses, and Quantum Tunneling | We calculate the widths, migration barriers, effective masses, and quantum tunneling rates of kinks and jogs in extended screw dislocations in copper, using an effective medium theory interatomic potential. The energy barriers and effective masses for moving a unit jog one lattice constant are close to typical atomic e... | [
"cond-mat.mtrl-sci",
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "t vegge_1",
"name": "Tejs Vegge",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j sethna_1",
"name": "James [\"P.\"] Sethna",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
6438735 | cs/0003036 | 2000-03-08 | DLV - A System for Declarative Problem Solving | DLV is an efficient logic programming and non-monotonic reasoning (LPNMR) system with advanced knowledge representation mechanisms and interfaces to classic relational database systems. Its core language is disjunctive datalog (function-free disjunctive logic programming) under the Answer Set Semantics with integrity c... | [
"cs.AI",
"cs.LO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5147882 | cs/0003042 | 2000-03-08 | Fages' Theorem and Answer Set Programming | We generalize a theorem by Francois Fages that describes the relationship between the completion semantics and the answer set semantics for logic programs with negation as failure. The study of this relationship is important in connection with the emergence of answer set programming. Whenever the two semantics are equi... | [
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
905199 | cs/0003043 | 2000-03-08 | Automatic Classification of Text Databases through Query Probing | Many text databases on the web are "hidden" behind search interfaces, and their documents are only accessible through querying. Search engines typically ignore the contents of such search-only databases. Recently, Yahoo-like directories have started to manually organize these databases into categories that users can br... | [
"cs.DB",
"cs.IR"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p ipeirotis_2",
"name": "Panagiotis [\"G.\"] Ipeirotis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "l gravano_1",
"name": "Luis Gravano",
"publication_history": null,
"h_index": null,
"num... | null |
10794263 | cs/0003034 | 2000-03-08 | E-RES: A System for Reasoning about Actions, Events and Observations | E-RES is a system that implements the Language E, a logic for reasoning about narratives of action occurrences and observations. E's semantics is model-theoretic, but this implementation is based on a sound and complete reformulation of E in terms of argumentation, and uses general computational techniques of argumenta... | [
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a kakas_1",
"name": "Antonis [\"C.\"] Kakas",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r miller_10",
"name": "Rob Miller",
"publication_history": null,
"h_index": null,
"num_papers": nul... | null |
2047708 | cs/0003049 | 2000-03-09 | Planning with Incomplete Information | Planning is a natural domain of application for frameworks of reasoning about actions and change. In this paper we study how one such framework, the Language E, can form the basis for planning under (possibly) incomplete information. We define two types of plans: weak and safe plans, and propose a planner, called the E... | [
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a kakas_1",
"name": "Antonis [\"C.\"] Kakas",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r miller_10",
"name": "Rob Miller",
"publication_history": null,
"h_index": null,
"num_papers": nul... | null |
1695826 | nlin/0003020 | 2000-03-09 | A Bi-Hamiltonian Theory for Stationary KdV Flows and their Separability | We present a fairly new and comprehensive approach to the study of stationary flows of the Korteweg-de Vries hierarchy. They are obtained by means of a double restriction process from a dynamical system in an infinite number of variables. This process naturally provides us with a Lax representation of the flows, which ... | [
"nlin.SI"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "1841392",
"num_citations": null
},
{
"corpus_id": "14447273",
"num_citations": null
}
] | [
{
"author_id": "g falqui_0",
"name": "Gregorio Falqui",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "f magri_0",
"name": "Franco Magri",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
17115162 | astro-ph/0003128 | 2000-03-09 | A Simple Model for the Absorption of Starlight by Dust in Galaxies | We present a new model to compute the effects of dust on the integrated spectral properties of galaxies, based on an idealized prescription of the main features of the interstellar medium (ISM). The model includes the ionization of HII regions in the interiors of the dense clouds in which stars form and the influence o... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13432093 | cs/0003054 | 2000-03-11 | A Problem-Specific Fault-Tolerance Mechanism for Asynchronous, Distributed Systems | The idle computers on a local area, campus area, or even wide area network represent a significant computational resource---one that is, however, also unreliable, heterogeneous, and opportunistic. This type of resource has been used effectively for embarrassingly parallel problems but not for more tightly coupled probl... | [
"cs.DC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a iamnitchi_1",
"name": "Adriana Iamnitchi",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i foster_1",
"name": "Ian [\"T\"] Foster",
"publication_history": null,
"h_index": null,
"num_papers... | null |
5879269 | astro-ph/0003162 | 2000-03-12 | GADGET: A code for collisionless and gasdynamical cosmological simulations | We describe the newly written code GADGET which is suitable both for cosmological simulations of structure formation and for the simulation of interacting galaxies. GADGET evolves self-gravitating collisionless fluids with the traditional N-body approach, and a collisional gas by smoothed particle hydrodynamics. Along ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7012602 | astro-ph/0003163 | 2000-03-12 | Gravity-Modes in ZZ Ceti Stars: IV. Amplitude Saturation by Parametric Instability | ZZ Ceti stars exhibit small amplitude photometric pulsations in multiple gravity-modes. We demonstrate that parametric instability, a form of resonant 3-mode coupling, limits overstable modes to amplitudes similar to those observed. In particular, it reproduces the observed trend that longer period modes have larger am... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6855505 | hep-th/0003101 | 2000-03-13 | On the relevance of tachyons | We study condensation of open string tachyons using renormalization group flow in the worldsheet field theory. This approach leads to a simple picture of the physics of the nontrivial condensate. | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1452591 | cs/0003055 | 2000-03-13 | TnT - A Statistical Part-of-Speech Tagger | Trigrams'n'Tags (TnT) is an efficient statistical part-of-speech tagger. Contrary to claims found elsewhere in the literature, we argue that a tagger based on Markov models performs at least as well as other current approaches, including the Maximum Entropy framework. A recent comparison has even shown that TnT perform... | [
"cs.CL"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
14654718 | hep-th/0003085 | 2000-03-13 | D-Brane Gauge Theories from Toric Singularities and Toric Duality | Via partial resolution of Abelian orbifolds we present an algorithm for extracting a consistent set of gauge theory data for an arbitrary toric variety whose singularity a D-brane probes. As illustrative examples, we tabulate the matter content and superpotential for a D-brane living on the toric del Pezzo surfaces as ... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
1524089 | hep-th/0003118 | 2000-03-14 | Black Holes Radiate Mainly on the Brane | We examine the evaporation of a small black hole on a brane in a world with large extra dimensions. Since the masses of many Kaluza-Klein modes are much smaller than the Hawking temperature of the black hole, it has been claimed that most of the energy is radiated into these modes. We show that this is incorrect. Most ... | [
"hep-th",
"gr-qc",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14452916 | hep-th/0003117 | 2000-03-14 | Supersymmetric Randall-Sundrum Scenario | We present the supersymmetric version of the minimal Randall-Sundrum model with two opposite tension branes. | [
"hep-th",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r altendorfer_1",
"name": "Richard Altendorfer",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j bagger_1",
"name": "Jonathan [\"A.\"] Bagger",
"publication_history": null,
"h_index": null,
"... | null |
7933127 | hep-lat/9809113 | 2000-03-15 | Free energy of an SU(2) monopole-antimonopole pair | We induce an external ${Z}_2$ monopole-antimonopole pair in an SU(2) lattice gauge system and measure its free energy as a way to probe the vacuum structure. We discuss the motivation and computational methodology of the investigation and illustrate our preliminary results. | [
"hep-lat",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5457413 | cond-mat/0003263 | 2000-03-15 | Random Networks of Spiking Neurons: Instability in the Xenopus tadpole moto-neural pattern | A large network of integrate-and-fire neurons is studied analytically when the synaptic weights are independently randomly distributed according to a Gaussian distribution with arbitrary mean and variance. The relevant order parameters are identified, and it is shown that such network is statistically equivalent to an ... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech",
"physics.bio-ph",
"q-bio",
"q-bio.NC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18296492 | quant-ph/0003059 | 2000-03-16 | Optimal Encryption of Quantum Bits | We characterize the complete set of protocols that may be used to securely encrypt n quantum bits using secret and random classical bits. In addition to the application of such quantum encryption protocols to quantum data security, our framework allows for generalizations of many classical cryptographic protocols to qu... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p boykin_1",
"name": "P. [\"Oscar\"] Boykin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "v roychowdhury_1",
"name": "Vwani [\"P.\"] Roychowdhury",
"publication_history": null,
"h_index": null,... | null |
28069892 | quant-ph/0003075 | 2000-03-17 | Causality, delocalization and positivity of energy | In a series of interesting papers G. C. Hegerfeldt has shown that quantum systems with positive energy initially localized in a finite region, immediately develop infinite tails. In our paper Hegerfeldt's theorem is analysed using quantum and classical wave packets. We show that Hegerfeldt's conclusion remains valid in... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "e karpov_0",
"name": "Evgueni Karpov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g ordonez_2",
"name": "Gonzalo Ordonez",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
9684671 | quant-ph/0003070 | 2000-03-17 | All Teleportation and Dense Coding Schemes | We establish a one-to-one correspondence between (1) quantum teleportation schemes, (2) dense coding schemes, (3) orthonormal bases of maximally entangled vectors, (4) orthonormal bases of unitary operators with respect to the Hilbert-Schmidt scalar product, and (5) depolarizing operations, whose Kraus operators can be... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
263786768 | astro-ph/0003291 | 2000-03-20 | Detection of H Alpha Emission in a Methane (T-Type) Brown Dwarf | We report the detection of H{$\alpha$} emission in the T dwarf (methane brown dwarf) 2MASSW J1237392+652615 over three days using the Keck Low Resolution Imaging Spectrograph. The measured line flux, log(L$_{H{\alpha}}$/L$_{bol}$) = $-$4.3, is roughly consistent with early M dwarf activity levels and inconsistent with ... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a burgasser_1",
"name": "Adam [\"J.\"] Burgasser",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j kirkpatrick_2",
"name": "J. [\"Davy\"] Kirkpatrick",
"publication_history": null,
"h_index": nul... | null |
119009095 | quant-ph/0003092 | 2000-03-21 | Non-orthogonal preferred projectors for modal interpretations of quantum mechanics | Modal interpretations constitute a particular approach to associating dynamical variables with physical systems in quantum mechanics. Given the `quantum logical' constraints that are typically adopted by such interpretations, only certain sets of variables can be taken to be simultaneously definite-valued, and only cer... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r spekkens_1",
"name": "Robert [\"W.\"] Spekkens",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j sipe_1",
"name": "John [\"E.\"] Sipe",
"publication_history": null,
"h_index": null,
"num_pa... | null |
119405559 | astro-ph/0003317 | 2000-03-22 | Sixty-seven Additional L Dwarfs Discovered by the Two Micron All Sky Survey (2MASS) | We present JHKs photometry, far red spectra, and spectral classifications for an additional 67 L dwarfs discovered by the Two Micron All Sky Survey. One of the goals of this new search was to locate more examples of the latest L dwarfs. Of the 67 new discoveries, 17 have types of L6 or later. Analysis of these new disc... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "19109066",
"num_citations": null
},
{
"corpus_id": "15014821",
"num_citations": null
},
{
"corpus_id": "13904779",
"num_citations": null
}
] | [
{
"author_id": "j kirkpatrick_2",
"name": "J. [\"Davy\"] Kirkpatrick",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i reid_1",
"name": "I. [\"Neill\"] Reid",
"publication_history": null,
"h_index": null,
"n... | null |
3043734 | nlin/0003047 | 2000-03-22 | Four-phase patterns in forced oscillatory systems | We investigate pattern formation in self-oscillating systems forced by an external periodic perturbation. Experimental observations and numerical studies of reaction-diffusion systems and an analysis of an amplitude equation are presented. The oscillations in each of these systems entrain to rational multiples of the p... | [
"nlin.PS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17786797 | math/0003130 | 2000-03-22 | Limiting distributions for a polynuclear growth model with external sources | The purpose of this paper is to investigate the limiting distribution functions for a polynuclear growth model with two external sources, which was considered by Pr\"ahofer and Spohn. Depending on the strength of the sources, the limiting distribution functions are either the Tracy-Widom functions of random matrix theo... | [
"math.PR",
"math-ph",
"math.CO",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11525980 | math/0003135 | 2000-03-23 | A holistic finite difference approach models linear dynamics consistently | I prove that a centre manifold approach to creating finite difference models will consistently model linear dynamics as the grid spacing becomes small. Using such tools of dynamical systems theory gives new assurances about the quality of finite difference models under nonlinear and other perturbations on grids with fi... | [
"math.NA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
926540 | cs/0003077 | 2000-03-24 | DATALOG with constraints - an answer-set programming system | Answer-set programming (ASP) has emerged recently as a viable programming paradigm well attuned to search problems in AI, constraint satisfaction and combinatorics. Propositional logic is, arguably, the simplest ASP system with an intuitive semantics supporting direct modeling of problem constraints. However, for some ... | [
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15281232 | math/0003158 | 2000-03-25 | On the WDVV-equation in quantum K-theory | A K-theoretic counterpart of quantum cohomology theory is discussed. | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13149645 | cond-mat/0003416 | 2000-03-25 | Is Random Close Packing of Spheres Well Defined? | Despite its long history, there are many fundamental issues concerning random packings of spheres that remain elusive, including a precise definition of random close packing (RCP). We argue that the current picture of RCP cannot be made mathematically precise and support this conclusion via a molecular dynamics study o... | [
"cond-mat.stat-mech",
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16532321 | quant-ph/0003137 | 2000-03-29 | Fermionic quantum computation | We define a model of quantum computation with local fermionic modes (LFMs) -- sites which can be either empty or occupied by a fermion. With the standard correspondence between the Foch space of $m$ LFMs and the Hilbert space of $m$ qubits, simulation of one fermionic gate takes $O(m)$ qubit gates and vice versa. We sh... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2958363 | cs/0003083 | 2000-03-30 | Advances in domain independent linear text segmentation | This paper describes a method for linear text segmentation which is twice as accurate and over seven times as fast as the state-of-the-art (Reynar, 1998). Inter-sentence similarity is replaced by rank in the local context. Boundary locations are discovered by divisive clustering. | [
"cs.CL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14321371 | hep-th/0003284 | 2000-03-30 | Temperature of D3-branes off extremality | We discuss non-extremal rotating D3-branes. We solve the wave equation for scalars in the supergravity background of certain distributions of branes and compute the absorption coefficients. The form of these coefficients is similar to the gray-body factors associated with black-hole scattering. They are given in terms ... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s musiri_1",
"name": "Suphot Musiri",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g siopsis_1",
"name": "George Siopsis",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
16229330 | astro-ph/0003483 | 2000-03-31 | A Quantitative Study of Interacting Dark Matter in Halos | We study the evolution of Hernquist profile ``galaxies'' in the presence of self-interacting dark matter (SIDM), where the properties of the dark matter can be parameterized by one number, sigma-hat = sigma M/a^2 for a halo of mass M and break radius a. While the halos form constant density cores of size a/2 on the cor... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "6669358",
"num_citations": null
},
{
"corpus_id": "2047218",
"num_citations": null
}
] | [
{
"author_id": "c kochanek_1",
"name": "Christopher [\"S.\"] Kochanek",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m white_10",
"name": "Martin White",
"publication_history": null,
"h_index": null,
"num_p... | null |
14540467 | astro-ph/0003478 | 2000-03-31 | Evolutionary Timescale of the DAV G117-B15A: The Most Stable Optical Clock Known | We observe G117-B15A, the most precise optical clock known, to measure the rate of change of the main pulsation period of this blue-edge DAV white dwarf. Even though the obtained value is only within 1 sigma, Pdot = (2.3 +/- 1.4) x 10^{-15} s/s, it is already constraining the evolutionary timescale of this cooling whit... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s kepler_1",
"name": "S. [\"O.\"] Kepler",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "a mukadam_1",
"name": "Anjum [\"Shagufta\"] Mukadam",
"publication_history": null,
"h_index": null,
"n... | null |
1327917 | math/0003228 | 2000-03-31 | Exponential and moment inequalities for U-statistics | A Bernstein-type exponential inequality for (generalized) canonical U-statistics of order 2 is obtained and the Rosenthal and Hoffmann-J{\o}rgensen inequalities for sums of independent random variables are extended to (generalized) U-statistics of any order whose kernels are either nonnegative or canonical | [
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7158833 | cs/0004001 | 2000-04-02 | A Theory of Universal Artificial Intelligence based on Algorithmic Complexity | Decision theory formally solves the problem of rational agents in uncertain worlds if the true environmental prior probability distribution is known. Solomonoff's theory of universal induction formally solves the problem of sequence prediction for unknown prior distribution. We combine both ideas and get a parameterles... | [
"cs.AI",
"cs.IT",
"cs.LG",
"math.IT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119074696 | astro-ph/0004026 | 2000-04-03 | The CNOC2 Field Galaxy Redshift Survey I: The Survey and the Catalog for the Patch CNOC 0223+00 | The Canadian Network for Observational Cosmology (CNOC2) Field Galaxy Redshift Survey is a spectroscopic/photometric survey of faint galaxies over 1.5 square degrees of sky with a nominal spectroscopic limit of R_c=21.5 mag. The primary goals of the survey are to investigate the evolution of galaxy clustering and galax... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18294824 | astro-ph/0004016 | 2000-04-03 | Cosmic Ray Anisotropy Analysis with a Full-Sky Observatory | A cosmic ray observatory with full-sky coverage can exploit standard anisotropy analysis methods that do not work if part of the celestial sphere is never seen. In particular, the distribution of arrival directions can be fully characterized by a list of spherical harmonic coefficients. The dipole vector and quadrupole... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5575774 | physics/0004009 | 2000-04-04 | Coupled Two-Way Clustering Analysis of Gene Microarray Data | We present a novel coupled two-way clustering approach to gene microarray data analysis. The main idea is to identify subsets of the genes and samples, such that when one of these is used to cluster the other, stable and significant partitions emerge. The search for such subsets is a computationally complex task: we pr... | [
"physics.bio-ph",
"physics.comp-ph",
"physics.data-an",
"q-bio.QM"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16276309 | astro-ph/0004063 | 2000-04-05 | Supernova type Ia luminosities, their dependence on second parameters, and the value of H_0 | A sample of 35 SNe Ia with good to excellent photometry in B and V, minimum internal absorption, and 1200 < v < \approx 30000 km/s is compiled from the literature. As far as their spectra are known they are all Branch-normal. For 29 of the SNe Ia also peak magnitudes in I are known. The SNe Ia have uniform colors at ma... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
30872876 | astro-ph/0004086 | 2000-04-06 | The Bispectrum: From Theory to Observations | The bispectrum is the lowest-order statistic sensitive to the shape of structures generated by gravitational instability and is a potentially powerful probe of galaxy biasing and the Gaussianity of primordial fluctuations. Although the evolution of the bispectrum is well understood theoretically from non-linear perturb... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9509134 | hep-ph/0004052 | 2000-04-06 | Magnetic Z(N) symmetry in hot QCD and the spatial Wilson loop | We discuss the relation between the deconfining phase transition in gauge theories and the realization of the magnetic Z(N) symmetry. At low temperature the Z(N) symmetry is spontaneously broken while above the phase transition it is restored. This is intimately related to the change of behaviour of the spatial 't Hoof... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15302613 | astro-ph/0004092 | 2000-04-06 | A New Method For Galaxy Cluster Detection I: The Algorithm | Numerous methods for finding clusters at moderate to high redshifts have been proposed in recent years, at wavelengths ranging from radio to X-rays. In this paper we describe a new method for detecting clusters in two-band optical/near-IR imaging data. The method relies upon the observation that all rich clusters, at a... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18886587 | quant-ph/0004026 | 2000-04-06 | Group Theoretical Quantum Tomography | The paper is devoted to the mathematical foundation of the quantum tomography using the theory of square-integrable representations of unimodular Lie groups. | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g cassinelli_1",
"name": "Gianni Cassinelli",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g d’ariano_1",
"name": "Giacomo [\"Mauro\"] D’Ariano",
"publication_history": null,
"h_index": null,
... | null |
648528 | quant-ph/0004032 | 2000-04-07 | Phase space observables and isotypic spaces | We give necessary and sufficient conditions for the set of Neumark projections of a countable set of phase space observable to constitute a resolution of the identity, and we give a criteria for a phase space observable to be informationally complete. The results will be applied to the phase space observables arising f... | [
"quant-ph",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g cassinelli_1",
"name": "Gianni Cassinelli",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "e vito_1",
"name": "Ernesto [\"de\"] Vito",
"publication_history": null,
"h_index": null,
"num_pape... | null |
9079120 | cond-mat/0004144 | 2000-04-10 | Collective Spin Fluctuation Mode and Raman Scattering in Superconducting Cuprates | Although the low frequency electronic Raman response in the superconducting state of the cuprates can be largely understood in terms of a d-wave energy gap, a long standing problem has been an explanation for the spectra observed in the $A_{1g}$ polarization orientations. We present calculations which suggest that the ... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "f venturini_2",
"name": "Francesca Venturini",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "u michelucci_1",
"name": "U. Michelucci",
"publication_history": null,
"h_index": null,
"num_paper... | null |
118273110 | astro-ph/0004128 | 2000-04-10 | Identification of A-colored Stars and Structure in the Halo of the Milky Way from SDSS Commissioning Data | A sample of 4208 objects with magnitude 15 < g* < 22 and colors of main sequence A stars has been selected from 370 square degrees of Sloan Digital Sky Survey (SDSS) commissioning observations. The data is from two long, narrow stripes, each with an opening angle of greater than 60 deg, at Galactic latitudes 36 < abs(b... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119417566 | cond-mat/0004148 | 2000-04-10 | Scaling and Persistence in the Two-Dimensional Ising Model | The spatial distribution of persistent spins at zero-temperature in the pure two-dimensional Ising model is investigated numerically. A persistence correlation length, $\xi (t)\sim t^Z$ is identified such that for length scales $r<<\xi (t)$ the persistent spins form a fractal with dimension $d_f$; for length scales $r>... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s jain_67",
"name": "S. Jain",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "h flynn_1",
"name": "Hamish Flynn",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_cit... | null |
21762622 | quant-ph/0004051 | 2000-04-11 | Persistent entanglement in arrays of interacting particles | We study the entanglement properties of a class of $N$ qubit quantum states that are generated in arrays of qubits with an Ising-type interaction. These states contain a large amount of entanglement as given by their Schmidt measure. They have also a high {\em persistency of entanglement} which means that $\sim N/2$ qu... | [
"quant-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference",
"target.key_reference"
] | [] | [
{
"author_id": "h briegel_1",
"name": "Hans [\"J.\"] Briegel",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r raussendorf_1",
"name": "Robert Raussendorf",
"publication_history": null,
"h_index": null,
"num... | null |
119362709 | cond-mat/0004180 | 2000-04-11 | Anomalous field-dependent specific heat in charge-ordered Pr$_{1-x}$Ca$_x$MnO$_3$ and La$_{0.5}$Ca$_{0.5}$MnO$_3$ | We report low temperature specific heat measurements of Pr$_{1-x}$Ca$_{x}$MnO$_{3}$ ($0.3\leq x \leq 0.5$) and La$_{0.5}$Ca$_{0.5}$MnO$_{3}$ with and without applied magnetic field. An excess specific heat, $C^{\prime}(T)$, of non-magnetic origin associated with charge ordering is found for all the samples. A magnetic ... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v smolyaninova_1",
"name": "Vera [\"N.\"] Smolyaninova",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "a biswas_9",
"name": "Amlan Biswas",
"publication_history": null,
"h_index": null,
"num_... | null |
18554626 | math/0004083 | 2000-04-12 | Loop-erased walks and total positivity | We consider matrices whose elements enumerate weights of walks in planar directed weighted graphs (not necessarily acyclic). These matrices are totally nonnegative; more precisely, all their minors are formal power series in edge weights with nonnegative coefficients. A combinatorial explanation of this phenomenon invo... | [
"math.CO",
"math.PR",
"math.RA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15339591 | gr-qc/0004037 | 2000-04-12 | The Consistent Newtonian Limit of Einstein's Gravity with a Cosmological Constant | We derive the `exact' Newtonian limit of general relativity with a positive cosmological constant $\Lambda$. We point out that in contrast to the case with $\Lambda = 0 $, the presence of a positive $\Lambda$ in Einsteins's equations enforces, via the condition $| \Phi | \ll 1$, on the potential $\Phi$, a range ${\cal ... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18854172 | astro-ph/0004178 | 2000-04-13 | Multiparameter estimation with the Pseudo-C_l method | We apply the Pseudo-C_l formalism to obtain an unbiased, approximate method for efficient simultaneous estimation of several cosmological parameters from large, almost full-sky cosmic microwave background data sets. | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b wandelt_1",
"name": "Benjamin [\"D.\"] Wandelt",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "k gorski_1",
"name": "Krzysztof [\"M.\"] Gorski",
"publication_history": null,
"h_index": null,
... | null |
999472 | cs/0004007 | 2000-04-17 | Deciding first-order properties of locally tree-decomposable structures | We introduce the concept of a class of graphs, or more generally, relational structures, being locally tree-decomposable. There are numerous examples of locally tree-decomposable classes, among them the class of planar graphs and all classes of bounded valence or of bounded tree-width. We also consider a slightly more ... | [
"cs.DS",
"cs.CC",
"cs.DB"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
20682044 | astro-ph/0004304 | 2000-04-21 | Cluster Detection in Astronomical Databases: the Adaptive Matched Filter Algorithm and Implementation | Clusters of galaxies are the most massive objects in the Universe and mapping their location is an important astronomical problem. This paper describes an algorithm (based on statistical signal processing methods), a software architecture (based on a hybrid layered approach) and a parallelization scheme (based on a cli... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "14078104",
"num_citations": null
}
] | [
{
"author_id": "j kepner_1",
"name": "Jeremy Kepner",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r kim_6",
"name": "Rita Kim",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_ci... | null |
119411795 | astro-ph/0004318 | 2000-04-21 | 2MASS Extended Source Catalog: Overview and Algorithms | The 2 Micron All-Sky Survey (2MASS) will observe over one-million galaxies and extended Galactic sources covering the entire sky at wavelengths between 1 and 2 microns. The survey catalog will have both high completeness and reliability down to J = 15.0 and Ks = 13.5 mag, equivalent to 1.6 mJy and 2.9 mJy, respectively... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17196808 | astro-ph/0004309 | 2000-04-21 | Four Measures of the Intracluster Medium Temperature and Their Relation to a Cluster's Dynamical State | We employ an ensemble of hydrodynamic cluster simulations to create spatially and spectrally resolved images of quality comparable to Chandra's expected performance. Emission from simulation mass elements is represented using the XSPEC mekal program assuming 0.3 solar metallicity, and the resulting spectra are fit with... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
651717 | astro-ph/0004308 | 2000-04-21 | Background discrimination capabilities of a heat and ionization germanium cryogenic detector | The discrimination capabilities of a 70 g heat and ionization Ge bolometer are studied. This first prototype has been used by the EDELWEISS Dark Matter experiment, installed in the Laboratoire Souterrain de Modane, for direct detection of WIMPs. Gamma and neutron calibrations demonstrate that this type of detector is a... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p stefano_1",
"name": "Ph. [\"di\"] Stefano",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "l bergé_1",
"name": "Laurent Bergé",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
119327159 | cond-mat/0004370 | 2000-04-21 | Quasi-Particle Spectrum around a Single Vortex in Superconductors - s-Wave Case - | Making use of the Bogoliubov-de Gennes equation, we study the quasi-particle spectrum and the vortex core structure of a single vortex in quasi 2D s-wave superconductors for small p_F xi_0, where p_F is the Fermi momentum and xi_0=v_F/Delta_0 is the coherence length (hbar=1). During our numerical calculation the partic... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.