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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
17395591 | astro-ph/9905040 | 1999-05-05 | Quintessence and Supergravity | In the context of quintessence, the concept of tracking solutions allows to address the fine-tuning and coincidence problems. When the field is on tracks today, one has $Q\approx m_{\rm Pl}$ demonstrating that, generically, any realistic model of quintessence must be based on supergravity. We construct the most simple ... | [
"astro-ph",
"gr-qc",
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8179189 | astro-ph/9905043 | 1999-05-05 | CLASS B1152+199 and B1359+154: Two New Gravitational Lens Systems Discovered in the Cosmic Lens All-Sky Survey | The third phase of the Cosmic Lens All-Sky Survey (CLASS) has recently been completed, bringing the total number of sources imaged to over 15000 in the CLASS and JVAS combined survey. In the VLA observations carried out in March and April of 1998, two new candidate lensed systems were discovered: CLASS B1152+199 and B1... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
3175587 | adap-org/9905004 | 1999-05-06 | Number-conserving cellular automaton rules | A necessary and sufficient condition for a one-dimensional q-state n-input cellular automaton rule to be number-conserving is established. Two different forms of simpler and more visual representations of these rules are given, and their flow diagrams are determined. Various examples are presented and applications to c... | [
"adap-org",
"nlin.AO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17165851 | gr-qc/9905027 | 1999-05-08 | Constructing a Mass-Current Radiation-Reaction Force For Numerical Simulations | We present a new set of 3.5 Post-Newtonian equations in which Newtonian hydrodynamics is coupled to the nonconservative effects of gravitational radiation emission. Our formalism differs in two significant ways from a similar 3.5 Post-Newtonian approach proposed by Blanchet (1993, 1997). Firstly we concentrate only on ... | [
"gr-qc",
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118957341 | astro-ph/9905106 | 1999-05-10 | The Lx-T and Lx-sigma Relationships for Galaxy Clusters Revisited | The relationships between the X-ray determined bolometric luminosity Lx, the temperature T of the intracluster gas, and the optical measured velocity dispersion sigma of the cluster galaxies are updated for galaxy clusters using the largest sample of 256 clusters drawn from literature. The newly established relationshi... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12187640 | astro-ph/9905128 | 1999-05-11 | Extrapolation of Galactic Dust Emission at 100 Microns to CMBR Frequencies Using FIRAS | We present predicted full-sky maps of submillimeter and microwave emission from the diffuse interstellar dust in the Galaxy. These maps are extrapolated from the 100 micron emission and 100/240 micron flux ratio maps that Schlegel, Finkbeiner, & Davis (1998; SFD98) generated from IRAS and COBE/DIRBE data. Results are p... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8989302 | cs/9905007 | 1999-05-12 | An Efficient, Probabilistically Sound Algorithm for Segmentation and Word Discovery | This paper presents a model-based, unsupervised algorithm for recovering word boundaries in a natural-language text from which they have been deleted. The algorithm is derived from a probability model of the source that generated the text. The fundamental structure of the model is specified abstractly so that the detai... | [
"cs.CL",
"cs.LG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6603873 | astro-ph/9905170 | 1999-05-13 | L Dwarfs and the Substellar Mass Function | Analysis of initial observations from near-infrared sky surveys has shown that the resulting photometric catalogues, combined with far-red optical data, provide an extremely effective method of finding isolated, very low-temperature objects in the general field. Follow-up observations have already identified more than ... | [
"astro-ph"
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{
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"author_id": "i reid_1",
"name": "I. [\"Neill\"] Reid",
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"author_id": "j kirkpatrick_2",
"name": "J. [\"Davy\"] Kirkpatrick",
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19780186 | quant-ph/9905045 | 1999-05-13 | Quantum Simulations on a Quantum Computer | We present a general scheme for performing a simulation of the dynamics of one quantum system using another. This scheme is used to experimentally simulate the dynamics of truncated quantum harmonic and anharmonic oscillators using nuclear magnetic resonance. We believe this to be the first explicit physical realizatio... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1175318 | math/9905084 | 1999-05-13 | The asymptotics of monotone subsequences of involutions | We compute the limiting distributions of the lengths of the longest monotone subsequences of random (signed) involutions with or without conditions on the number of fixed points (and negated points) as the sizes of the involutions tend to infinity. The resulting distributions are, depending on the number of fixed point... | [
"math.CO",
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"nlin.SI",
"solv-int"
] | null | [
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16123228 | cond-mat/9905191 | 1999-05-13 | The Largest Cluster in Subcritical Percolation | The statistical behavior of the size (or mass) of the largest cluster in subcritical percolation on a finite lattice of size $N$ is investigated (below the upper critical dimension, presumably $d_c=6$). It is argued that as $N \to \infty$ the cumulative distribution function converges to the Fisher-Tippett (or Gumbel) ... | [
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{
"author_id": "m bazant_1",
"name": "Martin [\"Z.\"] Bazant",
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] | null |
10581940 | math/9905083 | 1999-05-13 | Algebraic aspects of increasing subsequences | We present a number of results relating partial Cauchy-Littlewood sums, integrals over the compact classical groups, and increasing subsequences of permutations. These include: integral formulae for the distribution of the longest increasing subsequence of a random involution with constrained number of fixed points; ne... | [
"math.CO",
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"math.RT"
] | null | [
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6861849 | adap-org/9905005 | 1999-05-13 | A microsimulation of traders activity in the stock market: the role of heterogeneity, agents' interactions and trade frictions | We propose a model with heterogeneous interacting traders which can explain some of the stylized facts of stock market returns. In the model synchronization effects, which generate large fluctuations in returns, can arise either from an aggregate exogenous shock or, even in its absence, purely from communication and im... | [
"adap-org",
"nlin.AO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2574500 | hep-th/9905104 | 1999-05-15 | AdS/CFT Correspondence and Symmetry Breaking | We study, using the dual AdS description, the vacua of field theories where some of the gauge symmetry is broken by expectation values of scalar fields. In such vacua, operators built out of the scalar fields acquire expectation values, and we show how to calculate them from the behavior of perturbations to the AdS bac... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
38280439 | astro-ph/9905191 | 1999-05-15 | Uncorrelated Modes of the Nonlinear Power Spectrum | Nonlinear evolution causes the galaxy power spectrum to become broadly correlated over different wavenumbers. It is shown that prewhitening the power spectrum - transforming the power spectrum in such a way that the noise covariance becomes proportional to the unit matrix - greatly narrows the covariance of power. The ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14259683 | hep-th/9905112 | 1999-05-17 | Supertwistors as Quarks of SU(2,2|4) | The GS superstring on AdS_5 x S^5 has a nonlinearly realized, spontaneously broken SU(2,2|4) symmetry. Here we introduce a two-dimensional model in which the unbroken SU(2,2|4) symmetry is linearly realized. The basic variables are supertwistors, which transform in the fundamental representation of this supergroup. The... | [
"hep-th",
"gr-qc"
] | null | [
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{
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{
"corpus_id": "118961055",
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] | [
{
"author_id": "p claus_1",
"name": "Piet Claus",
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{
"author_id": "m gunaydin_0",
"name": "Murat Gunaydin",
"publication_history": null,
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... | null |
10503812 | hep-th/9905117 | 1999-05-17 | Batalin-Vilkovisky gauge-fixing of a chiral two-form in six dimensions | We perform the gauge-fixing of the theory of a chiral two-form boson in six dimensions starting from the action given by Pasti, Sorokin and Tonin. We use the Batalin-Vilkovisky formalism, introducing antifields and writing down an extended action satisfying the classical master equation. Then we gauge-fix the three loc... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "119092161",
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},
{
"corpus_id": "7473924",
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] | [
{
"author_id": "c broeck_1",
"name": "Chris [\"Van\",\"Den\"] Broeck",
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},
{
"author_id": "k hoof_0",
"name": "K. [\"Van\"] Hoof",
"publication_history": null,
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17600584 | math/9905094 | 1999-05-17 | Combinatorics of free cumulants | We derive a formula for expressing free cumulants whose entries are products of random variables in terms of the lattice structure of non-crossing partitions. We show the usefulness of that result by giving direct and conceptually simple proofs for a lot of results about $R$-diagonal elements. Our investigations do not... | [
"math.CO",
"math.OA",
"math.PR"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
13966185 | astro-ph/9905234 | 1999-05-18 | The Diffuse Interstellar Clouds toward 23 Orionis | Spectra obtained with the Hubble Space Telescope GHRS are combined with high-resolution optical spectra and UV spectra from Copernicus to study the abundances and physical conditions in the diffuse interstellar clouds seen along the line of sight to the star 23 Ori. Strong low-velocity (SLV) absorption, due to cool, mo... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7982966 | hep-th/9905131 | 1999-05-18 | Classical mechanics of relativistic particle with colour | Classical description of relativistic pointlike particle with intrinsic degrees of freedom such as isospin or colour is proposed. It is based on the Lagrangian of general form defined on the tangent bundle over a principal fibre bundle. It is shown that the dynamics splits into the external dynamics which describes the... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a duviryak_1",
"name": "Askold Duviryak",
"publication_history": null,
"h_index": null,
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}
] | null |
10414459 | hep-ph/9905386 | 1999-05-18 | An update on vector boson pair production at hadron colliders | We present numerical results (including full one-loop QCD corrections) for the processes p p-bar and pp -> W+ W-, W+/- Z/gamma* and Z/gamma* Z/gamma* followed by the decay of the massive vector bosons into leptons. In addition to their intrinsic importance as tests of the standard model, these processes are also backgr... | [
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
113401703 | chao-dyn/9905027 | 1999-05-18 | Lagrangian Tetrad Dynamics and the Phenomenology of Turbulence | A new phenomenological model of turbulent fluctuations is constructed by considering the Lagrangian dynamics of 4 points (the tetrad). The closure of the equations of motion is achieved by postulating an anisotropic, i.e. tetrad shape dependent, relation of the local pressure and the velocity gradient defined on the te... | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
3264213 | cs/9905008 | 1999-05-19 | Inducing a Semantically Annotated Lexicon via EM-Based Clustering | We present a technique for automatic induction of slot annotations for subcategorization frames, based on induction of hidden classes in the EM framework of statistical estimation. The models are empirically evalutated by a general decision test. Induction of slot labeling for subcategorization frames is accomplished b... | [
"cs.CL",
"cs.AI",
"cs.LG"
] | null | [
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] | [
{
"corpus_id": "3261520",
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] | [
{
"author_id": "m rooth_1",
"name": "Mats Rooth",
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},
{
"author_id": "s riezler_1",
"name": "Stefan Riezler",
"publication_history": null,
"h_index": null,
"num_papers": null,
"... | null |
60269 | cs/9905010 | 1999-05-19 | Statistical Inference and Probabilistic Modelling for Constraint-Based NLP | We present a probabilistic model for constraint-based grammars and a method for estimating the parameters of such models from incomplete, i.e., unparsed data. Whereas methods exist to estimate the parameters of probabilistic context-free grammars from incomplete data (Baum 1970), so far for probabilistic grammars invol... | [
"cs.CL",
"cs.LG"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s riezler_1",
"name": "Stefan Riezler",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
15395146 | cond-mat/9905273 | 1999-05-19 | Dipolar interaction and incoherent quantum tunneling: a Monte Carlo study of magnetic relaxation | We study the magnetic relaxation of a system of localized spins interacting through weak dipole interactions, at a temperature large with respect to the ordering temperature but low with respect to the crystal field level splitting. The relaxation results from quantum spin tunneling but is only allowed on sites where t... | [
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a cuccoli_1",
"name": "Alessandro Cuccoli",
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{
"author_id": "a fořt_0",
"name": "A. Fořt",
"publication_history": null,
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"... | null |
2499521 | cs/9905009 | 1999-05-19 | Inside-Outside Estimation of a Lexicalized PCFG for German | The paper describes an extensive experiment in inside-outside estimation of a lexicalized probabilistic context free grammar for German verb-final clauses. Grammar and formalism features which make the experiment feasible are described. Successive models are evaluated on precision and recall of phrase markup. | [
"cs.CL",
"cs.LG"
] | null | [
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] | [
{
"author_id": "f beil_0",
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{
"author_id": "g carroll_1",
"name": "Glenn Carroll",
"publication_history": null,
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"nu... | null |
158345 | hep-ph/9905421 | 1999-05-20 | Mass bounds for Triplet Scalars of the Left-Right symmetric model and their future detection prospects | The standard formulation of the Left-Right symmetric model involves scalars transforming as a triplet under SU(2)L. This multiplet contains particles which are uncharged, singly-charged, and doubly-charged. We derive a bound on the uncharged scalar mass of 55.4 GeV using results from LEP-II and find that a range upto 1... | [
"hep-ph",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17572289 | cond-mat/9905305 | 1999-05-20 | Scaling of the distribution of fluctuations of financial market indices | We study the distribution of fluctuations over a time scale $\Delta t$ (i.e., the returns) of the S&P 500 index by analyzing three distinct databases. Database (i) contains approximately 1 million records sampled at 1 min intervals for the 13-year period 1984-1996, database (ii) contains 8686 daily records for the 35-y... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn",
"q-fin.ST"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
25624217 | cond-mat/9905303 | 1999-05-20 | Size Segregation of Granular Matter in Silo Discharges | We present an experimental study of segregation of granular matter in a quasi-two dimensional silo emptying out of an orifice. Size separation is observed when multi-sized particles are used with the larger particles found in the center of the silo in the region of fastest flow. We use imaging to study the flow inside ... | [
"cond-mat.stat-mech",
"cond-mat.soft"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6490587 | cond-mat/9905438 | 1999-05-20 | Chaos in neural networks with a nonmonotonic transfer function | Time evolution of diluted neural networks with a nonmonotonic transfer function is analitically described by flow equations for macroscopic variables. The macroscopic dynamics shows a rich variety of behaviours: fixed-point, periodicity and chaos. We examine in detail the structure of the strange attractor and in parti... | [
"cond-mat.dis-nn",
"physics.bio-ph",
"q-bio.NC"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "d caroppo_1",
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{
"author_id": "m mannarelli_1",
"name": "Massimo Mannarelli",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
57341 | cs/9905014 | 1999-05-21 | Hierarchical Reinforcement Learning with the MAXQ Value Function Decomposition | This paper presents the MAXQ approach to hierarchical reinforcement learning based on decomposing the target Markov decision process (MDP) into a hierarchy of smaller MDPs and decomposing the value function of the target MDP into an additive combination of the value functions of the smaller MDPs. The paper defines the ... | [
"cs.LG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15466313 | gr-qc/9905084 | 1999-05-21 | A `warp drive' with more reasonable total energy requirements | I show how a minor modification of the Alcubierre geometry can dramatically improve the total energy requirements for a `warp bubble' that can be used to transport macroscopic objects. A spacetime is presented for which the total negative mass needed is of the order of a few solar masses, accompanied by a comparable am... | [
"gr-qc"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c broeck_1",
"name": "Chris [\"Van\",\"Den\"] Broeck",
"publication_history": null,
"h_index": null,
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}
] | null |
42350703 | gr-qc/9905086 | 1999-05-21 | Large quantum gravity effects and nonlocal variables | We reconsider here the model where large quantum gravity effects were first found, but now in its Null Surface Formulation (NSF). We find that although the set of coherent states for $Z$, the basic variable of NSF, is as restricted as it is the one for the metric, while some type of small deviations from these states m... | [
"gr-qc",
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a domínguez_3",
"name": "Alfredo [\"E.\"] Domínguez",
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},
{
"author_id": "m tiglio_1",
"name": "Manuel Tiglio",
"publication_history": null,
"h_index": null,
"num_pa... | null |
2693986 | cs/9905015 | 1999-05-21 | State Abstraction in MAXQ Hierarchical Reinforcement Learning | Many researchers have explored methods for hierarchical reinforcement learning (RL) with temporal abstractions, in which abstract actions are defined that can perform many primitive actions before terminating. However, little is known about learning with state abstractions, in which aspects of the state space are ignor... | [
"cs.LG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8915427 | astro-ph/9905292 | 1999-05-22 | Keck Pencil-Beam Survey for Faint Kuiper Belt Objects | We present the results of a pencil-beam survey of the Kuiper Belt using the Keck 10-m telescope. A single 0.01 square degree field is imaged 29 times for a total integration time of 4.8 hr. Combining exposures in software allows the detection of Kuiper Belt Objects (KBOs) having visual magnitude V < 27.9. Two new KBOs ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
135605 | astro-ph/9905332 | 1999-05-26 | Evolutionary calculations of phase separation in crystallizing white dwarf stars | We present an exploration of the significance of Carbon/Oxygen phase separation in white dwarf stars in the context of self-consistent evolutionary calculations. Because phase separation can potentially increase the calculated ages of the oldest white dwarfs, it can affect the age of the Galactic disk as derived from t... | [
"astro-ph"
] | null | [
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{
"corpus_id": "13998019",
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] | [
{
"author_id": "m montgomery_2",
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{
"author_id": "m montgomery_2",
"name": "Michael [\"H.\"] Montgomery",
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"h_index... | null |
119102048 | cond-mat/9905392 | 1999-05-26 | Noise induced transition from an absorbing phase to a regime of stochastic spatiotemporal intermittency | We introduce a stochastic partial differential equation capable of reproducing the main features of spatiotemporal intermittency (STI). Additionally the model displays a noise induced transition from laminarity to the STI regime. We show by numerical simulations and a mean-field analysis that for high noise intensities... | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | null | [
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{
"author_id": "m zimmermann_5",
"name": "Martín [\"G.\"] Zimmermann",
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{
"author_id": "r toral_1",
"name": "Raúl Toral",
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14574812 | cond-mat/9905411 | 1999-05-27 | Noise-Induced Phase Separation: Mean-Field Results | We present a study of a phase-separation process induced by the presence of spatially-correlated multiplicative noise. We develop a mean-field approach suitable for conserved-order-parameter systems and use it to obtain the phase diagram of the model. Mean-field results are compared with numerical simulations of the co... | [
"cond-mat"
] | null | [
"target.author.publication_history"
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{
"author_id": "m ibañes_1",
"name": "Marta Ibañes",
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{
"author_id": "j garcía-ojalvo_1",
"name": "Jordi García-Ojalvo",
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"num_papers... | null |
73638725 | cond-mat/9905423 | 1999-05-28 | Lyapunov Potential Description for Laser Dynamics | We describe the dynamical behavior of both class A and class B lasers in terms of a Lyapunov potential. For class A lasers we use the potential to analyze both deterministic and stochastic dynamics. In the stochastic case it is found that the phase of the electric field drifts with time in the steady state. For class B... | [
"cond-mat",
"physics.optics"
] | null | [
"target.author.publication_history"
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{
"author_id": "c mayol_1",
"name": "Catalina Mayol",
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{
"author_id": "r toral_1",
"name": "Raúl Toral",
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"nu... | null |
2448767 | quant-ph/9905096 | 1999-05-28 | Electron Spin Resonance Transistors for Quantum Computing in Silicon-Germanium Heterostructures | We apply the full power of modern electronic band structure engineering and epitaxial heterostructures to design a transistor that can sense and control a single donor electron spin. Spin resonance transistors may form the technological basis for quantum information processing. One and two qubit operations are performe... | [
"quant-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r vrijen_1",
"name": "Rutger [\"B.\"] Vrijen",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "e yablonovitch_1",
"name": "Eli Yablonovitch",
"publication_history": null,
"h_index": null,
"num_... | null |
3204300 | cs/9906002 | 1999-06-01 | The Symbol Grounding Problem | How can the semantic interpretation of a formal symbol system be made intrinsic to the system, rather than just parasitic on the meanings in our heads? How can the meanings of the meaningless symbol tokens, manipulated solely on the basis of their (arbitrary) shapes, be grounded in anything but other meaningless symbol... | [
"cs.AI"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
8463220 | cs/9906001 | 1999-06-01 | On Bounded-Weight Error-Correcting Codes | This paper computationally obtains optimal bounded-weight, binary, error-correcting codes for a variety of distance bounds and dimensions. We compare the sizes of our codes to the sizes of optimal constant-weight, binary, error-correcting codes, and evaluate the differences. | [
"cs.IT",
"math.IT"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r bent_1",
"name": "Russell Bent",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m schear_0",
"name": "Michael Schear",
"publication_history": null,
"h_index": null,
"num_papers": null,
"... | null |
8809439 | astro-ph/9906010 | 1999-06-01 | The Planck-LFI instrument: analysis of the 1/f noise and implications for the scanning strategy | We study the impact of the 1/f noise on the PLANCK Low Frequency Instrument (LFI) osbervations (Mandolesi et al 1998) and describe a simple method for removing striping effects from the maps for a number of different scanning stategies. A configuration with an angle between telescope optical axis and spin-axis just les... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "d maino_1",
"name": "Davide Maino",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "c burigana_1",
"name": "Carlo Burigana",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
119462703 | cond-mat/9906023 | 1999-06-02 | Observation of a Nanoscale Metallic Dot Self-Consistently Coupled to a Two-Level System | We have observed anomalous transport properties for a 50 nm Bi dot in the Coulomb-blockade regime. Over a range of gate voltages, Coulomb blockade peaks are suppressed at low bias, and dramatic structure appears in the current at higher bias. We propose that the state of the dot is determined self-consistently with the... | [
"cond-mat.mes-hall"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "d grupp_0",
"name": "Daniel [\"Edmund\"] Grupp",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "t zhang_101",
"name": "T. Zhang",
"publication_history": null,
"h_index": null,
"num_papers": nu... | null |
17108919 | astro-ph/9906065 | 1999-06-03 | A Very Low-Luminosity, Very Cool, DC White Dwarf | The star LHS 3250 is found to be a white dwarf at a distance of 30 pc. Its absolute magnitudes (M_V = 15.72; M_bol = 16.2) put it among the least-luminous white dwarfs known. Its optical spectrum shows no features, indicating it has a DC classification, and it shows no detectable polarization, indicating it does not ha... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11353852 | hep-th/9906046 | 1999-06-04 | Local Mirror Symmetry at Higher Genus | We discuss local mirror symmetry for higher-genus curves. Specifically, we consider the topological string partition function of higher-genus curves contained in a Fano surface within a Calabi-Yau. Our main example is the local P^2 case. The Kodaira-Spencer theory of gravity, tailored to this local geometry, can be sol... | [
"hep-th",
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
20195 | cs/9906007 | 1999-06-04 | MSO definable string transductions and two-way finite state transducers | String transductions that are definable in monadic second-order (mso) logic (without the use of parameters) are exactly those realized by deterministic two-way finite state transducers. Nondeterministic mso definable string transductions (i.e., those definable with the use of parameters) correspond to compositions of t... | [
"cs.LO",
"cs.CC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119061595 | cond-mat/9906071 | 1999-06-05 | Noise of Entangled Electrons: Bunching and Antibunching | Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering set-up with an entangler and a beam splitter. It is shown that, due to electron-electron interaction, the fidelity of the entangled singlet and t... | [
"cond-mat.mes-hall",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16917458 | cond-mat/9906078 | 1999-06-05 | An investigation of site-bond percolation on many lattices | A calculation of site-bond percolation thresholds in many lattices in two to five dimensions is presented. The line of threshold values has been parametrized in the literature, but we show here that there are strong deviations from the known approximate equations. We propose an alternative parametrization that lies muc... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7256059 | quant-ph/9906023 | 1999-06-07 | Classical interventions in quantum systems. I. The measuring process | The measuring process is an external intervention in the dynamics of a quantum system. It involves a unitary interaction of that system with a measuring apparatus, a further interaction of both with an unknown environment causing decoherence, and then the deletion of a subsystem. This description of the measuring proce... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
84835273 | cond-mat/9906099 | 1999-06-07 | High real-space resolution measurement of the local structure of Ga_1-xIn_xAs using x-ray diffraction | High real-space resolution atomic pair distribution functions (PDF)s from the alloy series Ga_1-xIn_xAs have been obtained using high-energy x-ray diffraction. The first peak in the PDF is resolved as a doublet due to the presence of two nearest neighbor bond lengths, Ga-As and In-As, as previously observed using XAFS.... | [
"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 |
14849112 | math/9906042 | 1999-06-08 | The Honeycomb Conjecture | The classical honeycomb conjecture asserts that any partition of the plane into regions of equal area has perimeter at least that of the regular hexagonal honeycomb tiling. Pappus discusses this problem in his preface to Book V. This paper gives the first general proof of the conjecture. The revision is the published v... | [
"math.MG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18530420 | hep-th/9906064 | 1999-06-08 | An Alternative to Compactification | Conventional wisdom states that Newton's force law implies only four non-compact dimensions. We demonstrate that this is not necessarily true in the presence of a non-factorizable background geometry. The specific example we study is a single 3-brane embedded in five dimensions. We show that even without a gap in the K... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6791153 | hep-th/9906070 | 1999-06-09 | CFT's From Calabi-Yau Four-folds | We consider F/M/Type IIA theory compactified to four, three, or two dimensions on a Calabi-Yau four-fold, and study the behavior near an isolated singularity in the presence of appropriate fluxes and branes. We analyze the vacuum and soliton structure of these models, and show that near an isolated singularity, one oft... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16864976 | hep-ph/9906298 | 1999-06-09 | The Production of Charginos/Neutralinos and Sleptons at Hadron Colliders | We analyse the production of charginos/neutralinos and sleptons at the hadron colliders Tevatron and LHC in the direct channels: $p\bar{p}/pp \to \tilde{\chi}_i \tilde{\chi}_j + X$ and $\tilde{\ell} \bar{\tilde{\ell}'} +X$. The cross sections for these reactions are given in next-to-leading order SUSY QCD. By including... | [
"hep-ph",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9827270 | astro-ph/9906173 | 1999-06-09 | CTQ 414: A New Gravitational Lens | We report the discovery and ground based observations of the new gravitational lens CTQ 414. The source quasar lies at a redshift of z = 1.29 with a B magnitude of 17.6. Ground based optical imaging reveals two point sources separated by 1.2 arcsec with a magnitude difference of roughly 1 mag. Subtraction of two stella... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15189932 | astro-ph/9906156 | 1999-06-09 | Constraining Primordial Non-Gaussianity With the Abundance of High Redshift Clusters | We show how observations of the evolution of the galaxy cluster number abundance can be used to constrain primordial non-Gaussianity in the universe. We carry out a maximum likelihood analysis incorporating a number of current datasets and accounting for a wide range of sources of systematic error. Under the assumption... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14116641 | quant-ph/9906034 | 1999-06-10 | Classical interventions in quantum systems. II. Relativistic invariance | If several interventions performed on a quantum system are localized in mutually space-like regions, they will be recorded as a sequence of ``quantum jumps'' in one Lorentz frame, and as a different sequence of jumps in another Lorentz frame. Conditions are specified that must be obeyed by the various operators involve... | [
"quant-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119082019 | astro-ph/9906179 | 1999-06-10 | New Modeling of the Lensing Galaxy and Cluster of Q0957+561: Implications for the Global Value of the Hubble Constant | The gravitational lens 0957+561 is modeled utilizing recent observations of the galaxy and the cluster as well as previous VLBI radio data which have been re-analyzed recently. The galaxy is modeled by a power-law elliptical mass density with a small core while the cluster is modeled by a non-singular power-law sphere ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
59332923 | cond-mat/9906160 | 1999-06-11 | Spin Hall effect | It is proposed that when a charge current circulates in a paramagnetic metal a transverse spin imbalance will be generated, giving rise to a 'spin Hall voltage'. Similarly, that when a spin current circulates a transverse charge imbalance will be generated, hence a Hall voltage, in the absence of charge current and mag... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15795829 | math/9906074 | 1999-06-11 | Spaces of Incompressible Surfaces | This is a "software upgrade" to a paper originally published in 1976, with cleaner statements and improved proofs. The main result is that, in a Haken 3-manifold, the space of all incompressible surfaces in a single isotopy class is contractible, except when the surface is the fiber of a surface bundle structure, in wh... | [
"math.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
36434 | math/9906097 | 1999-06-14 | A new bound on partial sum-sets and difference-sets, and applications to the Kakeya conjecture | Let $A, B$, be finite subsets of an abelian group, and let $G \subset A \times B$ be such that $# A, # B, # \{a+b: (a,b) \in G \} \leq N$. We consider the question of estimating the quantity $# \{a-b: (a,b) \in G \}$. Recently Bourgain improved the trivial upper bound of $N^2$ to $N^{2-1/13}$, and applied this to the K... | [
"math.CO",
"math.CA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5504867 | hep-th/9906109 | 1999-06-15 | `Blowing up' D-branes on Non-supersymmetric Cycles | In the orbifold limit of K3, one can give exact conformal field theory description of D-branes wrapped on certain non-supersymmetric cycles of K3. We study the effect of switching on the `non-geometric blow up modes' corresponding to anti-symmetric tensor gauge field flux through the 2-cycles on these D-branes. Working... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8539246 | gr-qc/9906050 | 1999-06-15 | On the (im)possibility of warp bubbles | Various objections against Alcubierre's warp drive geometry are reviewed. Superluminal warp bubbles seem an unlikey possibility within the framework of general relativity and quantum field theory, although subluminal bubbles may still be possible. | [
"gr-qc"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c broeck_1",
"name": "Chris [\"Van\",\"Den\"] Broeck",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
17596893 | cond-mat/9906209 | 1999-06-15 | Electronic Structure of Cu_(1-x)Ni_xRh_2S_4 and CuRh_2Se_4: Band Structure Calculations, X-ray Photoemission and Fluorescence Measurements | The electronic structure of spinel-type Cu_(1-x)Ni_xRh_2S_4 (x = 0.0, 0.1, 0.3, 0.5, 1.0) and CuRh_2Se_4 compounds has been studied by means of X-ray photoelectron and fluorescent spectroscopy. Cu L_3, Ni L_3, S L_(2,3) and Se M_(2,3) X-ray emission spectra (XES) were measured near thresholds at Beamline 8.0 of the Law... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g hart_1",
"name": "Gus [\"L.\",\"W.\"] Hart",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "w pickett_0",
"name": "Warren [\"E.\"] Pickett",
"publication_history": null,
"h_index": null,
"nu... | null |
17394383 | hep-th/9906118 | 1999-06-15 | A Simple Particle Action from a Twistor Parametrization of AdS_5 | The SO(4,2) isometries of AdS_5 are realized non-linearly on its horospherical coordinates (x^m,\rho). On the other hand, Penrose twistors have long been known to linearly realize these symmetries on 4-dimensional Minkowski space, the boundary of AdS_5, parametrized by x^m. Here we extend the twistor construction and d... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "p claus_1",
"name": "Piet Claus",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j rahmfeld_1",
"name": "Joachim Rahmfeld",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
8620622 | quant-ph/9906054 | 1999-06-16 | On Universal and Fault-Tolerant Quantum Computing | A novel universal and fault-tolerant basis (set of gates) for quantum computation is described. Such a set is necessary to perform quantum computation in a realistic noisy environment. The new basis consists of two single-qubit gates (Hadamard and ${\sigma_z}^{1/4}$), and one double-qubit gate (Controlled-NOT). Since t... | [
"quant-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [
{
"corpus_id": "14212814",
"num_citations": null
}
] | [
{
"author_id": "p boykin_1",
"name": "P. [\"Oscar\"] Boykin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "t mor_1",
"name": "Tal Mor",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
17329896 | cond-mat/9906281 | 1999-06-17 | Phonon and Elastic Instabilities in MoC and MoN | We present several results related to the instability of MoC and MoN in the B1 (sodium chloride) structure. These compounds were proposed as potential superconductors with moderately high transition temperatures. We show that the elastic instability in B1-structure MoN, demonstrated several years ago, persists at eleva... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g hart_1",
"name": "Gus [\"L.\",\"W.\"] Hart",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "b klein_9",
"name": "Barry [\"M.\"] Klein",
"publication_history": null,
"h_index": null,
"num_pap... | null |
10330692 | cond-mat/9906279 | 1999-06-17 | Statistical properties of eigenvectors in non-Hermitian Gaussian random matrix ensembles | Statistical properties of eigenvectors in non-Hermitian random matrix ensembles are discussed, with an emphasis on correlations between left and right eigenvectors. Two approaches are described. One is an exact calculation for Ginibre's ensemble, in which each matrix element is an independent, identically distributed G... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1251079 | cond-mat/9906280 | 1999-06-17 | The potential energy landscape of a model glass former: thermodynamics, anharmonicities, and finite size effects | It is possible to formulate the thermodynamics of a glass forming system in terms of the properties of inherent structures, which correspond to the minima of the potential energy and build up the potential energy landscape in the high-dimensional configuration space. In this work we quantitatively apply this general ap... | [
"cond-mat.soft",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2330542 | math/9906123 | 1999-06-18 | Homotopy Groups of the Space of Curves on a Surface | We explicitly calculate the fundamental group of the space $\mathcal F$ of all immersed closed curves on a surface $F$. It is shown that $\pi_n(\mathcal F)=0$, n>1 for $F\neq S^2, RP^2$. It is also proved that $\pi_2(\mathcal F)=\Z$, and $\pi_n(\mathcal F)=\pi_n(S^2)\oplus\pi_{n+1}(S^2)$, n>2, for $F$ equal to $S^2$ or... | [
"math.GT",
"math.DG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16835678 | hep-th/9906153 | 1999-06-19 | Undulating Strings and Gauge Theory Waves | We study some dynamical aspects of the correspondence between strings in AdS space and external heavy quarks in N=4 SYM. Specifically, by examining waves propagating on such strings, we make some plausible (and some surprising) inferences about the time-dependent fields produced by oscillating quarks in the strongly-co... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119444902 | hep-ph/9906432 | 1999-06-19 | Multibaryons as Symmetric Multiskyrmions | We study non-adiabatic corrections to multibaryon systems within the bound state approach to the SU(3) Skyrme model. We use approximate ansatze for the static background fields based on rational maps which have the same symmetries of the exact solutions. To determine the explicit form of the collective Hamiltonians and... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j garrahan_1",
"name": "Juan [\"P.\"] Garrahan",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m schvellinger_0",
"name": "Martin Schvellinger",
"publication_history": null,
"h_index": null,
... | null |
119010132 | cond-mat/9906323 | 1999-06-21 | Triviality of the Ground State Structure in Ising Spin Glasses | We investigate the ground state structure of the three-dimensional Ising spin glass in zero field by determining how the ground state changes in a fixed finite block far from the boundaries when the boundary conditions are changed. We find that the probability of a change in the block ground state configuration tends t... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16624693 | hep-th/9906171 | 1999-06-22 | Derivative expansion of quadratic operators in a general 't Hooft gauge | A derivative expansion technique is developed to compute functional determinants of quadratic operators, non diagonal in spacetime indices. This kind of operators arise in general 't Hooft gauge fixed Lagrangians. Elaborate applications of the developed derivative expansion are presented. | [
"hep-th",
"gr-qc",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "v zarikas_1",
"name": "Vasilios Zarikas",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
3130152 | cs/9906019 | 1999-06-22 | Resolving Part-of-Speech Ambiguity in the Greek Language Using Learning Techniques | This article investigates the use of Transformation-Based Error-Driven learning for resolving part-of-speech ambiguity in the Greek language. The aim is not only to study the performance, but also to examine its dependence on different thematic domains. Results are presented here for two different test cases: a corpus ... | [
"cs.CL",
"cs.AI"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g petasis_1",
"name": "Georgios Petasis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g paliouras_1",
"name": "Georgios Paliouras",
"publication_history": null,
"h_index": null,
"num_papers... | null |
1080 | cs/9906020 | 1999-06-22 | Temporal Meaning Representations in a Natural Language Front-End | Previous work in the context of natural language querying of temporal databases has established a method to map automatically from a large subset of English time-related questions to suitable expressions of a temporal logic-like language, called TOP. An algorithm to translate from TOP to the TSQL2 temporal database lan... | [
"cs.CL"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "7619657",
"num_citations": null
},
{
"corpus_id": "3265742",
"num_citations": null
}
] | [
{
"author_id": "i androutsopoulos_1",
"name": "Ion Androutsopoulos",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
118165962 | cond-mat/9906350 | 1999-06-23 | Scaling functions for Tsallis non--extensive statistics | We study the one-dimensional Ising model with long-range interactions in the context of Tsallis non-extensive statistics by computing numerically the number of states with a given energy. We find that the internal energy, magnetization, entropy and free energy follow non-trivial scaling laws with the number of constitu... | [
"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 |
17580350 | quant-ph/9906086 | 1999-06-23 | Geometric Quantum Mechanics | The manifold of pure quantum states is a complex projective space endowed with the unitary-invariant geometry of Fubini and Study. According to the principles of geometric quantum mechanics, the detailed physical characteristics of a given quantum system can be represented by specific geometrical features that are sele... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15316349 | quant-ph/9906084 | 1999-06-23 | A Foundation of Programming a Multi-Tape Quantum Turing machine | The notion of quantum Turing machines is a basis of quantum complexity theory. We discuss a general model of multi-tape, multi-head Quantum Turing machines with multi final states that also allow tape heads to stay still. | [
"quant-ph",
"cs.CC"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "t yamakami_1",
"name": "Tomoyuki Yamakami",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
119464724 | astro-ph/9906391 | 1999-06-24 | Dark matter annihilation at the galactic center | If cold dark matter is present at the galactic center, as in current models of the dark halo, it is accreted by the central black hole into a dense spike. Particle dark matter then annihilates strongly inside the spike, making it a compact source of photons, electrons, positrons, protons, antiprotons, and neutrinos. Th... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
122779442 | cond-mat/9906356 | 1999-06-24 | Bayes-optimal performance in a discrete space | We study a simple model of unsupervised learning where the single symmetry breaking vector has binary components $\pm 1$. We calculate exactly the Bayes-optimal performance of an estimator which is required to lie in the same discrete space. We also show that, except for very special cases, such an estimator cannot be ... | [
"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 |
789782 | quant-ph/9906095 | 1999-06-25 | Computational Complexity of Uniform Quantum Circuit Families and Quantum Turing Machines | Deutsch proposed two sorts of models of quantum computers, quantum Turing machines (QTMs) and quantum circuit families (QCFs). In this paper we explore the computational powers of these models and re-examine the claim of the computational equivalence of these models often made in the literature without detailed investi... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15271568 | astro-ph/9906463 | 1999-06-29 | The Cosmic Triangle: Revealing the State of the Universe | The "cosmic triangle" is introduced as a way of representing the past, present, and future status of the universe. Our current location within the cosmic triangle is determined by the answers to three questions: How much matter is in the universe? Is the expansion rate slowing down or speeding up? And, is the universe ... | [
"astro-ph",
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17780733 | astro-ph/9906472 | 1999-06-29 | Measuring the Remnant Mass Function of the Galactic Bulge | I show that by observing microlensing events both astrometrically and photometrically, the Space Interferometry Mission (SIM) can measure the mass function of stellar remnants in the Galactic bulge including white dwarfs, neutron stars, and black holes. Neutron stars and black holes can be identified individually, whil... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
12560512 | astro-ph/9906466 | 1999-06-29 | The Lick Planet Search: Detectability and Mass Thresholds | We analyse 11 years of precise radial velocities for 76 solar type stars from the Lick survey. Eight stars in this sample have previously reported planetary-mass companions, all with mass (m sin i) less than 8 Jupiter masses (MJ). For the stars without a detected companion, we place upper limits on possible companion m... | [
"astro-ph"
] | null | [
"target.key_reference"
] | null | null | null |
119525304 | hep-th/9906226 | 1999-06-29 | Holographic Particle Detection | In anti-de Sitter (AdS) space, classical supergravity solutions are represented "holographically" by conformal field theory (CFT) states in which operators have expectation values. These 1-point functions are directly related to the asymptotic behaviour of bulk fields. In some cases, distinct supergravity solutions hav... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119137528 | math/9906212 | 1999-06-30 | Proof of the gradient conjecture of R. Thom | Let x(t) be a trajectory of the gradient of a real analytic function and suppose that x_0 is a limit point of x(t). We prove the gradient conjecture of R. Thom which states that the secants of x(t) at x_0 have a limit. Actually we show a stronger statement: the radial projection of x(t) from x_0 onto the unit sphere ha... | [
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8969800 | quant-ph/9906129 | 1999-06-30 | Fault-Tolerant Quantum Computation With Constant Error Rate | This paper proves the threshold result, which asserts that quantum computation can be made robust against errors and inaccuracies, when the error rate, $\eta$, is smaller than a constant threshold, $\eta_c$. The result holds for a very general, not necessarily probabilistic noise model, for quantum particles with any n... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
385425 | cond-mat/9906446 | 1999-06-30 | Pseudogap and Superconducting Gap in Y-123: A Raman Study | We present results of electronic Raman-scattering experiments in differently doped Y-123. In B2g symmetry, an analysis of the data in terms of a memory function approach is presented and dynamical relaxation rates $\Gamma(\omega,T)$ and mass-enhancement factors $1+\lambda(\omega,T)$ for the carriers are obtained. Start... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m opel_1",
"name": "Matthias Opel",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m götzinger_0",
"name": "Martin Götzinger",
"publication_history": null,
"h_index": null,
"num_papers": null,... | null |
8338650 | astro-ph/9907019 | 1999-07-01 | Discovery of Four Field Methane (T-type) Dwarfs with 2MASS | We report the discovery of four field methane (T-type) brown dwarfs using 2MASS survey data. One additional methane dwarf, previously discovered by SDSS, was also identified. Near-infrared spectra clearly show the 1.6 and 2.2 um CH4 absorption bands characteristic of objects with T_eff < 1300 K, as well as broadened H2... | [
"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 |
21174730 | cond-mat/9907017 | 1999-07-01 | Neutron diffraction evidence of microscopic charge inhomogeneities in the CuO2 plane of superconducting La2-xSrxCuO4 (0 < x <0.30) | We present local structural evidence supporting the presence of charge inhomogeneities in the CuO2 planes of underdoped La2-xSrxCuO4. High-resolution atomic pair distribution functions have been obtained from neutron powder diffraction data over the range of doping 0 < x < 0.30 at 10 K. Despite the average structure ge... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "e bozin_1",
"name": "Emil [\"S.\"] Bozin",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g kwei_1",
"name": "George [\"H.\"] Kwei",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
12083963 | astro-ph/9907015 | 1999-07-01 | Radioactive Decay Energy Deposition in Supernovae and the Exponential/Quasi-Exponential Behavior of Late-Time Supernova Light Curves | The radioactive decay energy (RDE) deposition in supernovae from the decay chain Ni56-Co56-Fe56 usually directly powers the UV/optical/IR (UVOIR) bolometric luminosity of supernovae in their quasi-steady state phase until very late times. The result for this phase is exponential/quasi-exponential UVOIR bolometric light... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7810806 | astro-ph/9907037 | 1999-07-02 | The Risetime of Nearby Type Ia Supernovae | We present calibrated photometric measurements of the earliest detections of nearby type Ia supernovae (SNe Ia). The set of ~30 new, unfiltered CCD observations delineate the early rise behavior of SNe Ia > 18 to 10 days before maximum. Using simple empirical models, we demonstrate the strong correlation between the ri... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4419938 | cond-mat/9907038 | 1999-07-02 | The diameter of the world wide web | Despite its increasing role in communication, the world wide web remains the least controlled medium: any individual or institution can create websites with unrestricted number of documents and links. While great efforts are made to map and characterize the Internet's infrastructure, little is known about the topology ... | [
"cond-mat.dis-nn",
"adap-org",
"cond-mat.stat-mech",
"cs.NI",
"math-ph",
"math.MP",
"nlin.AO",
"physics.comp-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119531046 | cond-mat/9907034 | 1999-07-02 | A-type Antiferromagnetic and C-type Orbital-Ordered State in LaMnO$_3$ Using Cooperative Jahn-Teller Phonons | The effect of Jahn-Teller phonons on the magnetic and orbital structure of LaMnO$_3$ is investigated using a combination of relaxation and Monte Carlo techniques on three-dimensional clusters of MnO$_6$ octahedra. In the physically relevant region of parameter space for LaMnO$_3$, and after including small corrections ... | [
"cond-mat.str-el"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
7086759 | astro-ph/9907040 | 1999-07-03 | The Effect of Crystallization on the Pulsations of White Dwarf Stars | We consider the pulsational properties of white dwarf star models with temperatures appropriate for the ZZ Ceti instability strip and with masses large enough that they should be substantially crystallized. Our work is motivated by the existence of a potentially crystallized DAV, BPM 37093, and the expectation that dig... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "m montgomery_2",
"name": "Michael [\"H.\"] Montgomery",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "m montgomery_2",
"name": "Michael [\"H.\"] Montgomery",
"publication_history": null,
"h_index... | null |
2495768 | cond-mat/9907068 | 1999-07-05 | Mean-field theory for scale-free random networks | Random networks with complex topology are common in Nature, describing systems as diverse as the world wide web or social and business networks. Recently, it has been demonstrated that most large networks for which topological information is available display scale-free features. Here we study the scaling properties of... | [
"cond-mat.dis-nn",
"adap-org",
"cond-mat.stat-mech",
"math-ph",
"math.MP",
"math.PR",
"nlin.AO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5090043 | hep-ph/9907232 | 1999-07-05 | Cottingham formula and the pion electromagnetic mass difference at finite temperature | We generalize the Cottingham formula at finite (T\neq 0) temperature by using the imaginary time formalism. The Cottingham formula gives the theoretical framework to compute the electromagnetic mass differences of the hadrons using a dispersion relation approach. It can be also used in other contexts, such as non lepto... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m ladisa_1",
"name": "M. Ladisa",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "g nardulli_1",
"name": "Giuseppe Nardulli",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
14695759 | astro-ph/9907052 | 1999-07-05 | The Reddening-Free Decline Rate Versus Luminosity Relationship for Type Ia Supernovae | We develop a method for estimating the host galaxy dust extinction for type Ia supernovae based on an observational coincidence first noted by Lira (1995), who found that the B-V evolution during the period from 30-90 days after V maximum is remarkably similar for all events, regardless of light curve shape. This fact ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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