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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
35234145 | quant-ph/9909047 | 1999-09-15 | Repulsion of Resonance States and Exceptional Points | Level repulsion is associated with exceptional points which are square root singularities of the energies as functions of a (complex) interaction parameter. This is also valid for resonance state energies. Using this concept it is argued that level anti-crossing (crossing) must imply crossing (anti-crossing) of the cor... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14209518 | astro-ph/9909275 | 1999-09-15 | A New Calculation of the Recombination Epoch | We have developed an improved recombination calculation of H, HeI, and HeII in the early Universe which involves a line-by-line treatment of each atomic level. We find two major differences compared with previous calculations. Firstly, the ionization fraction x_e is approximately 10% smaller for redshifts <~800, due to... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14509612 | hep-ph/9909378 | 1999-09-15 | Production and decays of stops, sbottoms, and staus | We present a phenomenological analysis of production and decays of stops, sbottoms, and staus in e+e- collisions with sqrt(s) = 500 - 800 GeV. We include SUSY-QCD and Yukawa coupling corrections as well as initial state radiation. We show that e- beam polarization is a powerful tool for a determination of the underlyin... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h eberl_1",
"name": "Helmut Eberl",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "s kraml_1",
"name": "Sabine Kraml",
"publication_history": null,
"h_index": null,
"num_papers": null,
"nu... | null |
16843198 | astro-ph/9909263 | 1999-09-15 | L Dwarfs Found in Sloan Digital Sky Survey Commissioning Imaging Data | This paper describes the discovery of seven dwarf objects of spectral type `L' (objects cooler than the latest M dwarfs) in commissioning imaging data taken by the Sloan Digital Sky Survey (SDSS). Low-resolution spectroscopy shows that these objects have spectral types from L0 to L8. Comparison of the SDSS and 2MASS ph... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2452099 | hep-th/9909110 | 1999-09-15 | Little String Theory in a Double Scaling Limit | A double scaling limit can be defined in string theory on a Calabi-Yau (CY) manifold by approaching a point in moduli space where the CY space develops an isolated singularity and at the same time taking the string coupling to zero, while keeping a particular combination of the two parameters fixed. This leads to a dec... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2837818 | hep-ph/9909407 | 1999-09-16 | Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD) | Hadron-hadron collisions at high energies are investigated in the Ultra-relativistic-Quantum-Molecular-Dynamics approach (UrQMD). This microscopic transport model is designed to study pp, pA and A+A collisions. It describes the phenomenology of hadronic interactions at low and intermediate energies ($\sqrt s <5$ GeV) i... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14628651 | astro-ph/9909315 | 1999-09-17 | The ROSAT All-Sky Survey Bright Source Catalogue | We present the ROSAT All-Sky Survey Bright Source Catalogue (RASS-BSC, revision 1RXS) derived from the all-sky survey performed during the first half year (1990/91) of the ROSAT mission. 18,811 sources are catalogued (i) down to a limiting ROSAT PSPC count-rate of 0.05 cts/s in the 0.1-2.4 keV energy band, (ii) with a ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2511900 | cond-mat/9909265 | 1999-09-17 | Modeling Market Mechanism with Minority Game | Using the Minority Game model we study a broad spectrum of problems of market mechanism. We study the role of different types of agents: producers, speculators as well as noise traders. The central issue here is the information flow : producers feed in the information whereas speculators make it away. How well each age... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn",
"q-fin.TR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
306005 | gr-qc/9909058 | 1999-09-20 | Quasi-Normal Modes of Stars and Black Holes | Perturbations of stars and black holes have been one of the main topics of relativistic astrophysics for the last few decades. They are of particular importance today, because of their relevance to gravitational wave astronomy. In this review we present the theory of quasi-normal modes of compact objects from both the ... | [
"gr-qc",
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12306473 | astro-ph/9909336 | 1999-09-20 | Four nearby L dwarfs | We present spectroscopic, photometric and astrometric observations of four bright L dwarfs identified in the course of the 2MASS near-infrared survey. Our spectroscopic data extend to wavelengths shortward of 5000\AA in the L0 dwarf 2MASSJ0746+2000 and the L4 dwarf 2MASSJ0036+1840, allowing the identification of absorp... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "16863021",
"num_citations": null
},
{
"corpus_id": "15014821",
"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": "j kirkpatrick_2",
"name": "J. [\"Davy\"] Kirkpatrick",
"publication_history": null,
"h_index": null,
"n... | null |
118904111 | chao-dyn/9909032 | 1999-09-21 | Scaling in thermal convection: A unifying theory | A systematic theory for the scaling of the Nusselt number $Nu$ and of the Reynolds number $Re$ in strong Rayleigh-Benard convection is suggested and shown to be compatible with recent experiments. It assumes a coherent large scale convection roll (``wind of turbulence'') and is based on the dynamical equations both in ... | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17851378 | hep-lat/9909147 | 1999-09-23 | The second moment of the pion's distribution amplitude | We present preliminary results for the second moment of the pion's distribution amplitude. The lattice formulation and the phenomenological implications are briefly reviewed, with special emphasis on some subtleties that arise when the Lorentz group is replaced by the hypercubic group. Having analysed more than half of... | [
"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": "m pierro_1",
"name": "Massimo [\"Di\"] Pierro",
"publication_history": null,
"h_index": null,
"num... | null |
6669358 | astro-ph/9909386 | 1999-09-23 | Observational evidence for self-interacting cold dark matter | Cosmological models with cold dark matter composed of weakly interacting particles predict overly dense cores in the centers of galaxies and clusters and an overly large number of halos within the Local Group compared to actual observations. We propose that the conflict can be resolved if the cold dark matter particles... | [
"astro-ph",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2168715 | quant-ph/9909073 | 1999-09-23 | Quantum states and generalized observables: a simple proof of Gleason's theorem | A quantum state can be understood in a loose sense as a map that assigns a value to every observable. Formalizing this characterization of states in terms of generalized probability distributions on the set of effects, we obtain a simple proof of the result, analogous to Gleason's theorem, that any quantum state is giv... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7615778 | chao-dyn/9909035 | 1999-09-24 | Non-Equilibrium Statistical Mechanics of Strongly Anharmonic Chains of Oscillators | We study the model of a strongly non-linear chain of particles coupled to two heat baths at different temperatures. Our main result is the existence and uniqueness of a stationary state at all temperatures. This result extends those of Eckmann, Pillet, Rey-Bellet to potentials with essentially arbitrary growth at infin... | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
829169 | astro-ph/9909431 | 1999-09-25 | DQ Herculis in Profile: Whole Earth Telescope Observations and Smoothed Particle Hydrodynamics Simulations | DQ Herculis was the Summer 1997 WET northern-hemisphere primary target. The O-C phase diagram of the 71-s signal reveals out-of-eclipse phase variations resulting from the self eclipses of a nearly edge-on, non-axisymmetric disc. We work the forward problem of simulating DQ Herculis numerically using the method of smoo... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m wood_1",
"name": "Matt [\"A.\"] Wood",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j robertson_2",
"name": "J. Robertson",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
13889229 | chao-dyn/9909037 | 1999-09-27 | Surrogate time series | Before we apply nonlinear techniques, for example those inspired by chaos theory, to dynamical phenomena occurring in nature, it is necessary to first ask if the use of such advanced techniques is justified "by the data". While many processes in nature seem very unlikely a priori to be linear, the possible nonlinear na... | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12873781 | cond-mat/9909402 | 1999-09-28 | Dynamics of Learning with Restricted Training Sets I: General Theory | We study the dynamics of supervised learning in layered neural networks, in the regime where the size $p$ of the training set is proportional to the number $N$ of inputs. Here the local fields are no longer described by Gaussian probability distributions and the learning dynamics is of a spin-glass nature, with the com... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
3454764 | math/9909169 | 1999-09-28 | Random Words, Toeplitz Determinants and Integrable Systems. I | It is proved that the limiting distribution of the length of the longest weakly increasing subsequence in an inhomogeneous random word is related to the distribution function for the eigenvalues of a certain direct sum of Gaussian unitary ensembles subject to an overall constraint that the eigenvalues lie in a hyperpla... | [
"math.CO",
"math-ph",
"math.MP",
"nlin.SI",
"solv-int"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14302112 | cs/9909019 | 1999-09-30 | Knowledge in Multi-Agent Systems: Initial Configurations and Broadcast | The semantic framework for the modal logic of knowledge due to Halpern and Moses provides a way to ascribe knowledge to agents in distributed and multi-agent systems. In this paper we study two special cases of this framework: full systems and hypercubes. Both model static situations in which no agent has any informati... | [
"cs.LO",
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a lomuscio_1",
"name": "Alessio Lomuscio",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r meyden_0",
"name": "Ron [\"van\",\"der\"] Meyden",
"publication_history": null,
"h_index": null,
"nu... | null |
13193081 | chao-dyn/9909041 | 1999-09-30 | Improved surrogate data for nonlinearity tests | Current tests for nonlinearity compare a time series to the null hypothesis of a Gaussian linear stochastic process. For this restricted null assumption, random surrogates can be constructed which are constrained by the linear properties of the data. We propose a more general null hypothesis allowing for nonlinear resc... | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5956855 | hep-ex/9910004 | 1999-10-01 | Search for a W' Boson via the Decay Mode W' -> mu nu in 1.8 TeV p-pbar Collisions | We report the results of a search for a W' boson produced in p-pbar collisions at a center-of-mass energy of 1.8 TeV using a 107 pb-1 data sample recorded by the Collider Detector at Fermilab. We consider the decay channel W' -> mu nu and search for anomalous production of high transverse mass mu-nu lepton pairs. We ob... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "f abe_1",
"name": "Fumio Abe",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "h akimoto_1",
"name": "H. Akimoto",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_cit... | null |
9874975 | astro-ph/9910061 | 1999-10-04 | Black hole mergers in the universe | Mergers of black-hole binaries are expected to release large amounts of energy in the form of gravitational radiation. However, binary evolution models predict merger rates too low to be of observational interest. In this paper we explore the possibility that black holes become members of close binaries via dynamical i... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18754284 | astro-ph/9910104 | 1999-10-06 | An Ultraviolet-Selected Galaxy Redshift Survey - II: The Physical Nature of Star Formation in an Enlarged Sample | We present further spectroscopic observations for a sample of galaxies selected in the vacuum ultraviolet (UV) at 2000 \AA from the FOCA balloon-borne imaging camera of Milliard et al. (1992). This work represents an extension of the initial study of Treyer et al. (1998). Our enlarged catalogue contains 433 sources; 27... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6468204 | cond-mat/9910082 | 1999-10-06 | Density Matrix Renormalization | The Density Matrix Renormalization Group (DMRG) has become a powerful numerical method that can be applied to low-dimensional strongly correlated fermionic and bosonic systems. It allows for a very precise calculation of static, dynamic and thermodynamic properties. Its field of applicability has now extended beyond Co... | [
"cond-mat",
"math-ph",
"math.MP",
"nucl-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8344241 | hep-th/9910061 | 1999-10-07 | Vacuum Geometry | We analyse symmetry breaking in general gauge theories paying particular attention to the underlying geometry of the theory. In this context we find two natural metrics upon the vacuum manifold: a Euclidean metric associated with the scalar sector, and another generally inequivalent metric associated with the gauge sec... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "n lepora_1",
"name": "Nathan [\"F.\"] Lepora",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
14410338 | astro-ph/9910131 | 1999-10-07 | Si and Mn Abundances in Damped Lya Systems with Low Dust Content | We have measured the abundances of Zn, Si, Mn, Cr, Fe, and Ni in three damped Lyman alpha systems at redshifts z < 1 from high resolution echelle spectra of QSOs recorded with the Keck I telescope. In all three cases the abundances of Cr, Fe, and Ni relative to Zn indicate low levels of dust depletions. We propose that... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119387754 | hep-lat/9910020 | 1999-10-08 | An Investigation of the Soft Pion Relation in Quenched Lattice QCD | A lattice determination of the form factor and decay constants for the semileptonic decay of heavy pseudoscalar (PS) mesons at zero recoil is presented from which the soft pion relation is satisfied. Chiral extrapolation of the form factor is performed at constant $q^2$. Pole dominance is used to extrapolate the form f... | [
"hep-lat"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "u bowler_0",
"name": "Ukqcd [\"Collaboration\",\"K.C.\"] Bowler",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c maynard_1",
"name": "Christopher [\"M.\"] Maynard",
"publication_history": null,
... | null |
14566232 | astro-ph/9910164 | 1999-10-08 | Evolutionary tracks and isochrones for low- and intermediate-mass stars: from 0.15 to 7 M_sun, and from Z=0.0004 to 0.03 | We present a large grid of stellar evolutionary tracks, which are suitable to modelling star clusters and galaxies by means of population synthesis. The tracks are presented for the initial chemical compositions [Z=0.0004, Y=0.23], [Z=0.001, Y=0.23], [Z=0.004, Y=0.24], [Z=0.008, Y=0.25], [Z=0.019, Y=0.273] (solar compo... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17843865 | hep-ex/9910019 | 1999-10-11 | High resolution pixel detectors for e+e- linear colliders | The physics goals at the future e+e- linear collider require high performance vertexing and impact parameter resolution. Two possible technologies for the vertex detector of an experimental apparatus are outlined in the paper: an evolution of the Hybrid Pixel Sensors already used in high energy physics experiments and ... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m caccia_1",
"name": "Massimo Caccia",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r campagnolo_1",
"name": "R. Campagnolo",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
26244879 | quant-ph/9910048 | 1999-10-12 | Optimal Quantum Cloning via Stimulated Emission | We show that optimal universal quantum cloning can be realized via stimulated emission. Universality of the cloning procedure is achieved by choosing systems that have appropriate symmetries. We first discuss a scheme based on stimulated emission in certain three-level-systems, e.g. atoms in a cavity. Then we present a... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16494967 | astro-ph/9910208 | 1999-10-12 | The sun as a high energy neutrino source | Cosmic ray interactions in the solar atmosphere yield a flux of electron and muon neutrinos with energies greater than 10 GeV. We discuss the influence of neutrino oscillations on the event rates in water-based Cerenkov detectors due to this neutrino flux and comment on the possibility of detecting the sun as a high en... | [
"astro-ph",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
52210363 | cond-mat/9910192 | 1999-10-13 | On modulational instability and energy localization in anharmonic lattices at finite energy density | The localization of vibrational energy, induced by the modulational instability of the Brillouin-zone-boundary mode in a chain of classical anharmonic oscillators with finite initial energy density, is studied within a continuum theory. We describe the initial localization stage as a gas of envelope solitons and explai... | [
"cond-mat",
"nlin.PS",
"patt-sol"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "y kosevich_0",
"name": "Yuriy [\"A.\"] Kosevich",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "s lepri_2",
"name": "Stefano Lepri",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
14794021 | astro-ph/9910235 | 1999-10-13 | BeppoSAX Observations of GRB980425: Detection of the Prompt Event and Monitoring of the Error Box | We present BeppoSAX follow-up observations of GRB980425 obtained with the Narrow Field Instruments (NFI) in April, May, and November 1998. The first NFI observation has detected within the 8' radius error box of the GRB an X-ray source positionally consistent with the supernova 1998bw, which exploded within a day of GR... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17905189 | math/9910075 | 1999-10-14 | The spectrum of semistable vector bundles on certain algebraic spaces | We extend the notion of the spectrum of semistable rank two bundles (initially constructed on ${\bf P}^3$ by Barth and Elencwajg) to a certain class of compact complex algebraic threefolds. | [
"math.AG"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "h kurke_0",
"name": "Herbert Kurke",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "o teschke_1",
"name": "Olaf Teschke",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
14574111 | astro-ph/9910273 | 1999-10-14 | Pulse Width Evolution in GRBs: Evidence for Internal Shocks | Many cosmological models of GRBs envision the energy source to be a cataclysmic stellar event leading to a relativistically expanding fireball. Particles are thought to be accelerated at shocks and produce nonthermal radiation. The highly variable temporal structure observed in most GRBs has significantly constrained m... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18080946 | quant-ph/9910061 | 1999-10-14 | Cyclic Quantum Error-Correcting Codes and Quantum Shift Registers | We transfer the concept of linear feed-back shift registers to quantum circuits. It is shown how to use these quantum linear shift registers for encoding and decoding cyclic quantum error-correcting codes. | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118353231 | astro-ph/9910339 | 1999-10-19 | Arrows of Time and the Anisotropic Properties of CMB | The relation between the thermodynamical and cosmological arrows of time is usually viewed in the context of the initial conditions of the Universe. It is a necessary but not sufficient condition for ensuring the thermodynamical arrow. We point out that in the Friedmann-Robertson-Walker Universe with negative curvature... | [
"astro-ph"
] | 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": "v gurzadyan_1",
"name": "Vahe [\"G.\"] Gurzadyan",
"publication_history": null,
"h_index": ... | null |
16961502 | astro-ph/9910338 | 1999-10-19 | On the Numerical Study of the Complexity and Fractal Dimension of CMB Anisotropies | We consider the problem of numerical computation of the Kolmogorov complexity and the fractal dimension of the anisotropy spots of Cosmic Microwave Background (CMB) radiation. Namely, we describe an algorithm of estimation of the complexity of spots given by certain pixel configuration on a grid and represent the resul... | [
"astro-ph"
] | 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": "v gurzadyan_1",
"name": "Vahe [\"G.\"] Gurzadyan",
"publication_history": null,
"h_index": ... | null |
260558609 | cond-mat/9910332 | 1999-10-21 | Emergence of scaling in random networks | Systems as diverse as genetic networks or the world wide web are best described as networks with complex topology. A common property of many large networks is that the vertex connectivities follow a scale-free power-law distribution. This feature is found to be a consequence of the two generic mechanisms that networks ... | [
"cond-mat.dis-nn",
"adap-org",
"cond-mat.stat-mech",
"nlin.AO"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
2515860 | cs/9910016 | 1999-10-21 | Probabilistic Agent Programs | Agents are small programs that autonomously take actions based on changes in their environment or ``state.'' Over the last few years, there have been an increasing number of efforts to build agents that can interact and/or collaborate with other agents. In one of these efforts, Eiter, Subrahmanian amd Pick (AIJ, 108(1-... | [
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j dix_2",
"name": "Jürgen Dix",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m nanni_1",
"name": "Mirco Nanni",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_cit... | null |
14616763 | quant-ph/9910095 | 1999-10-22 | Quantum Cryptography using larger alphabets | Like all of quantum information theory, quantum cryptography is traditionally based on two level quantum systems. In this letter, a new protocol for quantum key distribution based on higher dimensional systems is presented. An experimental realization using an interferometric setup is also proposed. Analyzing this prot... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
67835656 | gr-qc/9910076 | 1999-10-22 | The Einstein Equations on the 3-Brane World | We carefully investigate the gravitational equations of the brane world, in which all the matter forces except gravity are confined on the 3-brane in a 5-dimensional spacetime with $Z_2$ symmetry. We derive the effective gravitational equations on the brane, which reduce to the conventional Einstein equations in the lo... | [
"gr-qc",
"astro-ph",
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15122020 | cond-mat/9910365 | 1999-10-22 | Unsupervised learning of binary vectors: a Gaussian scenario | We study a model of unsupervised learning where the real-valued data vectors are isotropically distributed, except for a single symmetry breaking binary direction $\bm{B}\in\{-1,+1\}^{N}$, onto which the projections have a Gaussian distribution. We show that a candidate vector $\bm{J}$ undergoing Gibbs learning in this... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m copelli_1",
"name": "Mauro Copelli",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c broeck_1",
"name": "Chris [\"Van\",\"Den\"] Broeck",
"publication_history": null,
"h_index": null,
"num_... | null |
371 | cs/9910020 | 1999-10-23 | Selective Sampling for Example-based Word Sense Disambiguation | This paper proposes an efficient example sampling method for example-based word sense disambiguation systems. To construct a database of practical size, a considerable overhead for manual sense disambiguation (overhead for supervision) is required. In addition, the time complexity of searching a large-sized database po... | [
"cs.CL"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "2090262",
"num_citations": null
}
] | [
{
"author_id": "a fujii_3",
"name": "Atsushi Fujii",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "k inui_1",
"name": "Kentaro Inui",
"publication_history": null,
"h_index": null,
"num_papers": null,
"nu... | null |
16245184 | gr-qc/9910083 | 1999-10-25 | Equation of motion in a scalar model of gravity | A scalar model of gravity is considered. We propose Lorentz invariant field equation $\square f = k\eta_{ab}f_{,a}f_{,b}$. The aim of this model is to get, approximately, Newton's law of gravity. It is shown that $f=-\frac 1k\ln(1-k\frac mr)$ is the unique spherical symmetric static solution of the field equation. $f$ ... | [
"gr-qc",
"math-ph",
"math.MP"
] | 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 |
119453937 | hep-ph/9910493 | 1999-10-26 | Gauge Unification within the Dual Standard Model | We calculate the gauge couplings in the dual standard model. These values are consistent with an associated GeV mass scale, and predict the weak mixing angle to be ${\sin^2 \theta_w} (M_Z) \sim 0.22$. | [
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "n lepora_1",
"name": "Nathan [\"F.\"] Lepora",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
18737112 | nucl-th/9910064 | 1999-10-26 | Nuclear forces from chiral Lagrangians using the method of unitary transformation II: The two-nucleon system | We employ the chiral nucleon-nucleon potential derived in ref.[1] to study bound and scattering states in the two-nucleon system. At next-to-leading order, this potential is the sum of renormalized one-pion and two-pion exchange and contact interactions. At next-to-next-to-leading order, we have additional chiral two-p... | [
"nucl-th",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119334734 | astro-ph/9910487 | 1999-10-27 | Hubble Space Telescope weak lensing study of the z=0.83 cluster MS 1054-03 | We have measured the weak gravitational lensing signal of MS 1054-03, a rich and X-ray luminous cluster of galaxies at a redshift of z=0.83, using a two-colour mosaic of deep WFPC2 images. The small corrections for the size of the PSF and the high number density of background galaxies obtained in these observations res... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119458991 | hep-ph/9910526 | 1999-10-27 | Dual Quantum Electrodynamics: Dyon-Dyon and Charge-Monopole Scattering in a High-Energy Approximation | We develop the quantum field theory of electron-point magnetic monopole interactions and more generally, dyon-dyon interactions, based on the original string-dependent ``nonlocal'' action of Dirac and Schwinger. We demonstrate that a viable nonperturbative quantum field theoretic formulation can be constructed that res... | [
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119517155 | cond-mat/9910480 | 1999-10-28 | Disordered 2d quasiparticles in class D: Dirac fermions with random mass, and dirty superconductors | Disordered noninteracting quasiparticles that are governed by a Majorana-type Hamiltonian -- prominent examples are dirty superconductors with broken time-reversal and spin-rotation symmetry, or the fermionic representation of the 2d Ising model with fluctuating bond strengths -- are called class D. In two dimensions, ... | [
"cond-mat.mes-hall",
"cond-mat.supr-con"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1695370 | math/9910171 | 1999-10-29 | Shift Equivalence and the Conley index | In this paper we introduce filtration pairs for isolated invariant sets of continuous maps. We prove the existence of filtration pairs and show that, up to shift equivalence, the induced map on the corresponding pointed space is an invariant of the isolated invariant set. Moreover, the maps defining the shift equivalen... | [
"math.DS"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
56441388 | math/9910168 | 1999-10-29 | The Art of Frame Theory | Thye theory of frames for a Hilbert space plays a fundamental role in signal processing, image processing, data compression, sampling theory and much more, as well as being a fruitful area of research in abstract mathematics. In this ``tutorial'' on abstract frame theory, we will try to point out the major directions o... | [
"math.FA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
40968857 | cond-mat/9910487 | 1999-10-29 | Dark Solitons in Bose-Einstein Condensates | Dark solitons in cigar shaped Bose-Einstein condensates of Rubidium-87 are created by a phase imprinting method. Coherent and dissipative dynamics of the solitons has been observed. | [
"cond-mat",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
20529119 | cond-mat/9910499 | 1999-10-29 | Two-dimensional periodic frustrated Ising models in a transverse field | We investigate the interplay of classical degeneracy and quantum dynamics in a range of periodic frustrated transverse field Ising systems at zero temperature. We find that such dynamics can lead to unusual ordered phases and phase transitions, or to a quantum spin liquid (cooperative paramagnetic) phase as in the tria... | [
"cond-mat.stat-mech",
"cond-mat.str-el",
"cond-mat.supr-con"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119138086 | math/9911005 | 1999-11-02 | A move on diagrams that generates S-equivalence of knots | Two knots in three-space are S-equivalent if they are indistinguishable by Seifert matrices. We show that S-equivalence is generated by the doubled-delta move on knot diagrams. It follows as a corollary that a knot has trivial Alexander polynomial if and only if it can be undone by doubled-delta moves. | [
"math.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17025024 | math/9911022 | 1999-11-03 | Toward the classification of higher-dimensional toric Fano varieties | The purpose of this paper is to give basic tools for the classification of nonsingular toric Fano varieties by means of the notions of primitive collections and primitive relations due to Batyrev. By using them we can easily deal with equivariant blow-ups and blow-downs, and get an easy criterion to determine whether a... | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16461747 | astro-ph/9911045 | 1999-11-03 | High Resolution Mid-Infrared Imaging of Ultraluminous Infrared Galaxies | Observations of ultraluminous infrared galaxies (ULIRGs) with an achieved resolution approaching the diffraction limit in the mid-infrared from 8 - 25 $\mu$m using the Keck Telescopes are reported. We find extremely compact structures, with spatial scales of $< 0.3''$ (diameter) in six of the seven ULIRGs observed. The... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10412946 | quant-ph/9911009 | 1999-11-03 | Distinguishability of States and von Neumann Entropy | Consider an ensemble of pure quantum states |\psi_j>, j=1,...,n taken with prior probabilities p_j respectively. We show that it is possible to increase all of the pairwise overlaps |<\psi_i|\psi_j>| i.e. make each constituent pair of the states more parallel (while keeping the prior probabilities the same), in such a ... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16119191 | cond-mat/9911023 | 1999-11-03 | Supercooled Liquids and Glasses | In these lectures, which were presented at "Soft and Fragile Matter, Nonequilibrium Dynamics, Metastability and Flow" University of St. Andrews, 8 July - 22 July, 1999, I give an introduction to the physics of supercooled liquids and glasses and discuss some computer simulations done to investigate these systems. | [
"cond-mat.stat-mech",
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17384973 | cond-mat/9911064 | 1999-11-04 | Matched asymptotic solutions for the steady banded flow of the diffusive Johnson-Segalman model in various geometries | We present analytic solutions for steady flow of the Johnson-Segalman (JS) model with a diffusion term in various geometries and under controlled strain rate conditions, using matched asymptotic expansions. The diffusion term represents a singular perturbation that lifts the continuous degeneracy of stable, banded, ste... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15581850 | hep-ph/9911236 | 1999-11-04 | Astroparticle Physics | This article reviews some recent developments in Astroparticle Physics. Due to the extension of the field only part of the results and developments can be covered. The status of the search for Dark Matter, some recent results on Cosmic Rays and Gamma Ray Astronomy and the status of Neutrino Astronomy are presented. | [
"hep-ph",
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
59332234 | hep-th/9911025 | 1999-11-04 | Theta-terms in nonlinear sigma-models | We trace the origin of theta-terms in non-linear sigma-models as a nonperturbative anomaly of current algebras. The non-linear sigma-models emerge as a low energy limit of fermionic sigma-models. The latter describe Dirac fermions coupled to chiral bosonic fields. We discuss the geometric phases in three hierarchies of... | [
"hep-th",
"cond-mat",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a abanov_1",
"name": "Alexander [\"G.\"] Abanov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "p wiegmann_1",
"name": "Paul Wiegmann",
"publication_history": null,
"h_index": null,
"num_pape... | null |
6308208 | cond-mat/9911063 | 1999-11-04 | A Monte Carlo Method for the Numerical Simulation of Tsallis Statistics | We present a new method devised to overcome the intrinsic difficulties associated to the numerical simulations of the Tsallis statistics. We use a standard Metropolis Monte Carlo algorithm at a fictitious temperature T', combined with a numerical integration method for the calculation of the entropy in order to evaluat... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r salazar_1",
"name": "R. Salazar",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r toral_1",
"name": "Raúl Toral",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_... | null |
10865449 | astro-ph/9911102 | 1999-11-06 | Massive Lossless Data Compression and Multiple Parameter Estimation from Galaxy Spectra | We present a method for radical linear compression of datasets where the data are dependent on some number $M$ of parameters. We show that, if the noise in the data is independent of the parameters, we can form $M$ linear combinations of the data which contain as much information about all the parameters as the entire ... | [
"astro-ph",
"math.RA",
"physics.data-an"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119423877 | astro-ph/9911152 | 1999-11-09 | M31 Globular Clusters: Colors and Metallicities | We present a new catalog of photometric and spectroscopic data on M31 globular clusters. The catalog includes new optical and near-infrared photometry for a substantial fraction of the 435 clusters and cluster candidates. We use these data to determine the reddening and intrinsic colors of individual clusters, and find... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
62817114 | hep-lat/9911011 | 1999-11-09 | Improved B -> pi l nu_l form factors from the lattice | We present the results of a lattice computation of the form factors for B^0 ->pi^- l^+nu_l decays near zero-recoil. These results will allow a determination of the CKM matrix element |Vub| when measurements of the differential decay rate become available. We also provide models for extrapolation of the form factors and... | [
"hep-lat",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "u collaboration_1",
"name": "Ukqcd Collaboration",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "k bowler_0",
"name": "Kenneth [\"C.\"] Bowler",
"publication_history": null,
"h_index": null,
... | null |
17933748 | quant-ph/9911043 | 1999-11-09 | Cheat Sensitive Quantum Bit Commitment | We define cheat sensitive cryptographic protocols between mistrustful parties as protocols which guarantee that, if either cheats, the other has some nonzero probability of detecting the cheating. We give an example of an unconditionally secure cheat sensitive non-relativistic bit commitment protocol which uses quantum... | [
"quant-ph",
"cs.CR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14608396 | astro-ph/9911148 | 1999-11-09 | Magnetic Fields in Star-Forming Molecular Clouds I. The First Polarimetry of OMC-3 in Orion A | The first polarimetric images of the OMC-3 region of the Orion A filamentary molecular cloud are presented. Using the JCMT, we have detected polarized thermal emission at 850 microns from dust along a 6' length of the dense filament. The polarization pattern is highly ordered and is aligned with the filament throughout... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17681304 | astro-ph/9911177 | 1999-11-10 | Efficient Computation of CMB anisotropies in closed FRW models | We implement the efficient line of sight method to calculate the anisotropy and polarization of the cosmic microwave background for scalar and tensor modes in almost-Friedmann-Robertson-Walker models with positive spatial curvature. We present new results for the polarization power spectra in such models. | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119522261 | quant-ph/9911044 | 1999-11-10 | Classification of multi-qubit mixed states: separability and distillability properties | We give a complete, hierarchic classification for arbitrary multi-qubit mixed states based on the separability properties of certain partitions. We introduce a family of N-qubit states to which any arbitrary state can be depolarized. This family can be viewed as the generalization of Werner states to multi-qubit system... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
1213612 | math/9911072 | 1999-11-10 | Boundary slopes of immersed surfaces in 3-manifolds | This paper presents some finiteness results for the number of boundary slopes of immersed essential surfaces of given genus g in a compact 3-manifold with torus boundary. In the case of hyperbolic 3-manifolds we obtain uniform quadratic bounds in g for the number of possible slopes, independent of the 3-manifold. We al... | [
"math.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17620392 | astro-ph/9911188 | 1999-11-10 | R-Mode Oscillations in Rotating Magnetic Neutron Stars | We show that r-mode oscillations distort the magnetic fields of neutron stars and that their occurrence is likely to be limited by this interaction. If the field is gtrsim 10^{16} (Omega/Omega_B) G, where Omega and Omega_B are the angular velocities of the star and at which mass shedding occurs, r-mode oscillations can... | [
"astro-ph",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
35736018 | hep-ex/9911013 | 1999-11-11 | High Resolution Hybrid Pixel Sensors for the e+e- TESLA Linear Collider Vertex Tracker | In order to fully exploit the physics potential of a future high energy e+e- linear collider, a Vertex Tracker, providing high resolution track reconstruction, is required. Hybrid Silicon pixel sensors are an attractive option, for the sensor technology, due to their read-out speed and radiation hardness, favoured in t... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m battaglia_3",
"name": "M. Battaglia",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "r orava_1",
"name": "Risto Orava",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119386569 | astro-ph/9911196 | 1999-11-11 | The Observed Probability Distribution Function, Power Spectrum, and Correlation Function of the Transmitted Flux in the Lyman-alpha Forest | A sample of eight quasars observed at high resolution and signal-to-noise is used to determine the probability distribution function (PDF), the power spectrum, and the correlation function of the transmitted flux in the \lya forest, in three redshift bins centered at z=2.41, 3.00, and 3.89. All the results are presente... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1015851 | astro-ph/9911219 | 1999-11-11 | CMBFAST for spatially closed universes | We extend the cosmological linear perturbation theory code CMBFAST to closed geometries. This completes the implementation of CMBFAST to all types of geometries and allows the user to perform an unlimited search in the parameter space of models. This will be specially useful for placing confidence limits on cosmologica... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m zaldarriaga_1",
"name": "Matias Zaldarriaga",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "u seljak_2",
"name": "Uroš Seljak",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
7620023 | math/9911084 | 1999-11-12 | Values of Brownian intersection exponents I: Half-plane exponents | This paper proves conjectures originating in the physics literature regarding the intersection exponents of Brownian motion in a half-plane. For instance, suppose that B and B' are two independent planar Brownian motions started from distinct points in a half-plane H. Then, as $t \to \infty$, $$ P [ B[0,t] \cap B'[0,t]... | [
"math.PR",
"math.CV"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14518148 | hep-ph/9911340 | 1999-11-12 | A full Next to Leading Order study of direct photon pair production in hadronic collisions | We discuss the production of photon pairs in hadronic collisions, from fixed target to LHC energies. The study which follows is based on a QCD calculation at full next-to-leading order accuracy, including single and double fragmentation contributions, and implemented in the form of a general purpose computer program of... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16825180 | astro-ph/9911222 | 1999-11-12 | New Pulsars from Arecibo Drift Scan Search | We report the discovery of 3 pulsars, PSR J0030+0451, PSR J0711+09, and PSR J1313+09 that were found in a three dimensional (DM, period, position) search at 430 MHz using the 305m Arecibo telescope. PSR J0030+0451 is a nearby 4.8-millisecond solitary pulsar. Spin and astrometric parameters are presented for the three n... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
116976055 | gr-qc/9911050 | 1999-11-14 | Test compatible metrics and 2-branes | We propose a sufficient condition for a general spherical symmetric static metric to be compatible with classical tests of gravity. A 1-parametric class of such metrics are constructed. The Schwarzschild metric as well as the Yilmaz-Rosen metric are in this class. By computing the scalar curvature we show that the non-... | [
"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 |
813040 | cs/9911009 | 1999-11-16 | Two-way finite automata with quantum and classical states | We introduce 2-way finite automata with quantum and classical states (2qcfa's). This is a variant on the 2-way quantum finite automata (2qfa) model which may be simpler to implement than unrestricted 2qfa's; the internal state of a 2qcfa may include a quantum part that may be in a (mixed) quantum state, but the tape he... | [
"cs.CC",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15067026 | astro-ph/9911295 | 1999-11-16 | Nonlinear r-modes in a spherical shell: issues of principle | We use a simple physical model to study the nonlinear behaviour of the r-mode instability. We assume that r-modes (Rossby waves) are excited in a thin spherical shell of rotating incompressible fluid. For this case, exact Rossby wave solutions of arbitrary amplitude are known. We find that: (a) These nonlinear Rossby w... | [
"astro-ph",
"gr-qc"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "14129441",
"num_citations": null
},
{
"corpus_id": "11541437",
"num_citations": null
},
{
"corpus_id": "17165851",
"num_citations": null
},
{
"corpus_id": "17620392",
"num_citations": null
}
] | [
{
"author_id": "y levin_1",
"name": "Yuri Levin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g caltech_2",
"name": "Greg [\"Ushomirsky\"] Caltech",
"publication_history": null,
"h_index": null,
"num_paper... | null |
119093212 | quant-ph/9911072 | 1999-11-16 | Use of composite rotations to correct systematic errors in NMR quantum computation | We implement an ensemble quantum counting algorithm on three NMR spectrometers with 1H resonance frequencies of 500, 600 and 750 MHz. At higher frequencies, the results deviate markedly from naive theoretical predictions. These systematic errors can be attributed almost entirely to off-resonance effects, which can be s... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12615770 | astro-ph/9911334 | 1999-11-17 | New non-Gaussian feature in COBE-DMR Four Year Maps | We extend a previous bispectrum analysis of the Cosmic Microwave Background temperature anisotropy, allowing for the presence of correlations between different angular scales. We find a strong non-Gaussian signal in the ``inter-scale'' components of the bispectrum: their observed values concentrate close to zero instea... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14059884 | quant-ph/9911079 | 1999-11-17 | Minimal Entropy of States Emerging from Noisy Quantum Channels | In this paper, we consider the minimal entropy of qubit states transmitted through two uses of a noisy quantum channel, which is modeled by the action of a completely positive trace-preserving (or stochastic) map. We provide strong support for the conjecture that this minimal entropy is additive, namely that the minimu... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18274004 | quant-ph/9911082 | 1999-11-18 | A Quantum Algorithm for finding the Maximum | This paper describes a quantum algorithm for finding the maximum among N items. The classical method for the same problem takes O(N) steps because we need to compare two numbers in one step. This algorithm takes O(sqrt(N)) steps by exploiting the property of quantum states to exist in a superposition of states and henc... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119509129 | hep-ph/9911400 | 1999-11-18 | Lattice Gauge Theory | The status of lattice calculations in Quantum Field Theory is reviewed. A major part is devoted to recent progress in formulating exact chiral symmetry on the lattice. Another topic which has received a lot of attention is the influence of dynamical quark effects. Attempts to quantify these effects for the light hadron... | [
"hep-ph",
"hep-lat"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "z davoudi_1",
"name": "Zohreh Davoudi",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c bauer_1",
"name": "Christian [\"W.\"] Bauer",
"publication_history": null,
"h_index": null,
"num_papers... | null |
14143964 | hep-th/9911147 | 1999-11-18 | A brief review of "little string theories" | This is a brief review of the current state of knowledge on "little string theories", which are non-gravitational theories having several string-like properties. We focus on the six dimensional maximally supersymmetric "little string theories" and describe their definition, some of their simple properties, the motivati... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1805721 | cond-mat/9911293 | 1999-11-18 | Local structure of In_(0.5)Ga_(0.5)As from joint high-resolution and differential pair distribution function analysis | High resolution total and indium differential atomic pair distribution functions (PDFs) for In_(0.5)Ga_(0.5)As alloys have been obtained by high energy and anomalous x-ray diffraction experiments, respectively. The first peak in the total PDF is resolved as a doublet due to the presence of two distinct bond lengths, In... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v petkov_1",
"name": "Valeri Petkov",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i jeong_3",
"name": "I-K. Jeong",
"publication_history": null,
"h_index": null,
"num_papers": null,
"nu... | null |
9854046 | astro-ph/9911390 | 1999-11-19 | On the Snow Line in Dusty Protoplanetary Disks | The snow line, in Hayashi's (1981) model, is where the temperature of a black body that absorbed direct sunlight and re-radiated as much as it absorbed, would be 170~K. It is usually assumed that the cores of the giant planets, e.g., Jupiter, form beyond the snow line. Since Hayashi, there have been a series of more de... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18044694 | astro-ph/9911418 | 1999-11-22 | Neutron Stars in Supernova Remnants | I briefly summarize some facts and ideas concerning the presence of neutron stars in Supernova remnants. While sources similar to the Crab Nebula require the presence of a central energetic object, shell-type remnants such as Cas A are compatible with the presence of neutron stars releasing a weak relativistic wind. | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16124371 | cond-mat/9911396 | 1999-11-24 | Zero-variance principle for Monte Carlo algorithms | We present a general approach to greatly increase at little cost the efficiency of Monte Carlo algorithms. To each observable to be computed we associate a renormalized observable (improved estimator) having the same average but a different variance. By writing down the zero-variance condition a fundamental equation de... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10701579 | astro-ph/9911459 | 1999-11-24 | The Dust Content and Opacity of Actively Star-Forming Galaxies | (Abridged) We present far-infrared (FIR) photometry at 150 micron and 205 micron of eight low-redshift starburst galaxies obtained with the ISO Photometer. Five of the eight galaxies are detected in both wavebands and these data are used, in conjunction with IRAS archival photometry, to model the dust emission at lambd... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15721842 | astro-ph/9911476 | 1999-11-25 | Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei | (abridged) We have spectrophotometrically monitored a well-defined sample of 28 Palomar-Green quasars in order to obtain measurements of their BLRs and to investigate the relationships between quasar luminosity, central black hole mass, and broad emission line region (BLR) size in active galactic nuclei (AGN). Spectrop... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15721518 | astro-ph/9911488 | 1999-11-27 | Bars and Warps traced by the Molecular Gas in the Seyfert 2 Galaxy NGC 1068 | We present new interferometer observations of the 12CO(1-0) and 12CO(2-1) line emission of NGC 1068 with a resolution of 0.7''. The molecular gas in the inner 5'' is resolved into a ring with two bright knots east and west of the nuclear continuum emission. For the first time in NGC 1068, we can trace molecular gas at ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11374691 | math/9911238 | 1999-11-29 | Bounds on complex eigenvalues and resonances | We obtain bounds on the complex eigenvalues of non-self-adjoint Schr\"odinger operators with complex potentials, and also on the complex resonances of self-adjoint Schr\"odinger operators. Our bounds are compared with numerical results, and are seen to provide useful information. | [
"math.SP",
"cs.NA",
"math.NA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
738521 | astro-ph/9911528 | 1999-11-30 | The Tip of the Red Giant Branch Distance to the Large Magellanic Cloud | We present the I-band luminosity function of the red giant branch stars in the Large Magellanic Cloud (LMC) using the data from the Magellanic Clouds Photometric Survey (Zaritsky, Harris & Thompson, 1997). Selecting stars in uncrowded, low-extinction regions, a discontinuity in the luminosity function is observed at I_... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119459717 | cond-mat/9911483 | 1999-11-30 | Semiclassical approach to the thermodynamics of spin chains | Using the PQSCHA semiclassical method, we evaluate thermodynamic quantities of one-dimensional Heisenberg ferro- and antiferromagnets. Since the PQSCHA reduces their evaluation to classical-like calculations, we take advantage of Fisher's exact solution to get all results in an almost fully analytical way. Explicitly c... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a cuccoli_1",
"name": "Alessandro Cuccoli",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "v tognetti_1",
"name": "Valerio Tognetti",
"publication_history": null,
"h_index": null,
"num_papers"... | null |
118868102 | cond-mat/9911474 | 1999-11-30 | Field Theoretical Analysis of On-line Learning of Probability Distributions | On-line learning of probability distributions is analyzed from the field theoretical point of view. We can obtain an optimal on-line learning algorithm, since renormalization group enables us to control the number of degrees of freedom of a system according to the number of examples. We do not learn parameters of a mod... | [
"cond-mat.dis-nn",
"adap-org",
"hep-th",
"nlin.AO",
"physics.data-an"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9989629 | cond-mat/9911482 | 1999-11-30 | Adsorption of Large Ions from an Electrolyte Solution: A Modified Poisson-Boltzmann Equation | The behavior of electrolyte solutions close to a charged surface is studied theoretically. A modified Poisson-Boltzmann equation which takes into account the volume excluded by the ions in addition to the electrostatic interactions is presented. In a formal lattice gas formalism the modified Poisson-Boltzmann equation ... | [
"cond-mat.soft",
"cond-mat.stat-mech",
"physics.chem-ph"
] | 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.