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 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|
17333378 | hep-ph/9806299 | 1998-06-08 | SUSY-QCD corrections to stop and sbottom decays into Higgs bosons | We calculate the order(\alpha_s) SUSY-QCD corrections to the widths of stop and sbottom decays into Higgs bosons within the Minimal Supersymmetric Standard Model. We give the complete analytical formulae paying particular attention to the on-shell renormalization of the soft SUSY-breaking parameters. We also perform a ... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a bartl_1",
"name": "Alfred Bartl",
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{
"author_id": "h eberl_1",
"name": "Helmut Eberl",
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"nu... | null |
52206725 | cond-mat/9806133 | 1998-06-10 | On the anomalous thermal conductivity of one-dimensional lattices | The divergence of the thermal conductivity in the thermodynamic limit is thoroughly investigated. The divergence law is consistently determined with two different numerical approaches based on equilibrium and non-equilibrium simulations. A possible explanation in the framework of linear-response theory is also presente... | [
"cond-mat.stat-mech"
] | null | [
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{
"author_id": "s lepri_2",
"name": "Stefano Lepri",
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"author_id": "r livi_1",
"name": "Roberto Livi",
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2102 | cmp-lg/9806009 | 1998-06-11 | Methods and Tools for Building the Catalan WordNet | In this paper we introduce the methodology used and the basic phases we followed to develop the Catalan WordNet, and shich lexical resources have been employed in its building. This methodology, as well as the tools we made use of, have been thought in a general way so that they could be applied to any other language. | [
"cmp-lg",
"cs.CL"
] | null | [
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{
"author_id": "l benitez_2",
"name": "Laura Benitez",
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},
{
"author_id": "s cervell_0",
"name": "Sergi Cervell",
"publication_history": null,
"h_index": null,
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... | null |
3124457 | hep-th/9806087 | 1998-06-11 | The Holographic Weyl anomaly | We calculate the Weyl anomaly for conformal field theories that can be described via the adS/CFT correspondence. This entails regularizing the gravitational part of the corresponding supergravity action in a manner consistent with general covariance. Up to a constant, the anomaly only depends on the dimension d of the ... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16287827 | hep-th/9806094 | 1998-06-11 | The Heterotic String, the Tangent Bundle, and Derived Categories | We consider the compactification of the E8xE8 heterotic string on a K3 surface with "the spin connection embedded in the gauge group" and the dual picture in the type IIA string (or F-theory) on a Calabi-Yau threefold X. It turns out that the same X arises also as dual to a heterotic compactification on 24 point-like i... | [
"hep-th",
"math.AG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14924830 | astro-ph/9806171 | 1998-06-12 | APM 08279+5255: an ultraluminous BAL quasar at a redshift z=3.87 | We report on the discovery of a highly luminous, broad absorption line quasar at a redshift of $z=3.87$ which is positionally coincident, within one arcsecond, with the IRAS FSC source F08279+5255. A chance alignment of the quasar and the IRAS source is extremely unlikely and we argue that the optical and FIR flux are ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
4421384 | astro-ph/9806175 | 1998-06-12 | Discovery of the peculiar supernova 1998bw in the error box of GRB980425 | The discovery of X-ray, optical and radio afterglows of gamma-ray bursts (GRBs) and the measurements of the distances to some of them have established that these events come from Gpc distances and are the most powerful photon emitters known in the Universe, with peak luminosities up to 10^52 erg/s. We here report the d... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18309046 | cond-mat/9806177 | 1998-06-15 | Mean field theory of critical coupled map lattices | We study the single-site approximation of the Perron-Frobenius equation for a coupled map lattice exhibiting a phase transition at a critical value g_c of the coupling constant. We found that the critical exponents are the same as in the usual mean-field theory of equilibrium statistical mechanics. Remarkably, the valu... | [
"cond-mat",
"chao-dyn",
"nlin.CD"
] | null | [
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] | [] | [
{
"author_id": "s lepri_2",
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{
"author_id": "w just_1",
"name": "Wolfram Just",
"publication_history": null,
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"nu... | null |
8074746 | cmp-lg/9806011 | 1998-06-16 | A Memory-Based Approach to Learning Shallow Natural Language Patterns | Recognizing shallow linguistic patterns, such as basic syntactic relationships between words, is a common task in applied natural language and text processing. The common practice for approaching this task is by tedious manual definition of possible pattern structures, often in the form of regular expressions or finite... | [
"cmp-lg",
"cs.CL"
] | null | [
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{
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] | [
{
"author_id": "s argamon_1",
"name": "Shlomo [\"Engelson\"] Argamon",
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{
"author_id": "i dagan_1",
"name": "Ido Dagan",
"publication_history": null,
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"num_papers... | null |
15852114 | astro-ph/9806238 | 1998-06-17 | Reconstruction Analysis of Galaxy Redshift Surveys: A Hybrid Reconstruction Method | In reconstruction analysis of galaxy redshift surveys, one works backwards from the observed galaxy distribution to the primordial density field in the same region, then evolves the primordial fluctuations forward in time with an N-body code. This incorporates assumptions about the cosmological parameters, the properti... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
55165469 | quant-ph/9806063 | 1998-06-18 | Quantum secret sharing | Secret sharing is a procedure for splitting a message into several parts so that no subset of parts is sufficient to read the message, but the entire set is. We show how this procedure can be implemented using GHZ states. In the quantum case the presence of an eavesdropper will introduce errors so that his presence can... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16632320 | physics/9806030 | 1998-06-19 | The Geometry of Algorithms with Orthogonality Constraints | In this paper we develop new Newton and conjugate gradient algorithms on the Grassmann and Stiefel manifolds. These manifolds represent the constraints that arise in such areas as the symmetric eigenvalue problem, nonlinear eigenvalue problems, electronic structures computations, and signal processing. In addition to t... | [
"physics.comp-ph",
"cond-mat",
"math.NA",
"physics.chem-ph"
] | null | [
"target.author.publication_history.key_reference",
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] | null | null | null |
119095859 | cond-mat/9806243 | 1998-06-19 | Generalized Force Model of Traffic Dynamics | Floating car data of car-following behavior in cities were compared to existing microsimulation models, after their parameters had been calibrated to the experimental data. With these parameter values, additional simulations have been carried out, e.g. of a moving car which approaches a stopped car. It turned out that,... | [
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
17164599 | hep-th/9806177 | 1998-06-21 | Brane Box Realization of Chiral Gauge Theories in Two Dimensions | We study type IIA configurations of D4 branes and three kinds of NS fivebranes. The D4 brane world-volume has finite extent in three directions, giving rise to a two-dimensional low-energy field theory. The models have generically $(0,2)$ supersymmetry. We determine the rules to read off the spectrum and interactions o... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119354546 | astro-ph/9806302 | 1998-06-22 | A method to determine the polarization of high energy gamma-rays | A method to determine the polarization direction of a very high energy (50 MeV - 30 GeV), linearly polarized gamma ray is analyzed and discussed. We study the differential cross section for pair production and show that the only relevant piece of information comes from the reconstruction of the pair trajectory. In part... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g depaola_0",
"name": "Gerardo [\"O.\"] Depaola",
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},
{
"author_id": "c kozameh_1",
"name": "Carlos [\"N.\"] Kozameh",
"publication_history": null,
"h_index": null,
... | null |
542894 | physics/9806032 | 1998-06-22 | Wavelet Analysis of Blood Pressure Waves in Vasovagal Syncope | We describe the multiresolution wavelet analysis of blood pressure waves in vasovagal syncope affected patients compared with healthy people. We argue that there exist discriminating criteria which allow us to isolate particular features, common to the syncope-affected patients sample, indicating an alternative diagnos... | [
"physics.bio-ph",
"physics.med-ph",
"q-bio"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "a marrone_1",
"name": "Alessandro Marrone",
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},
{
"author_id": "a polosa_1",
"name": "Antonio [\"D.\"] Polosa",
"publication_history": null,
"h_index": null,
"num_pa... | null |
3026103 | astro-ph/9806297 | 1998-06-22 | Unveiling Dust-enshrouded Star Formation in the Early Universe: a Sub-mm Survey of the Hubble Deep Field | The advent of sensitive sub-mm array cameras now allows a proper census of dust-enshrouded massive star-formation in very distant galaxies, previously hidden activity to which even the faintest optical images are insensitive. We present the deepest sub-mm survey of the sky to date, taken with the SCUBA camera on the Ja... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118690319 | hep-ex/9806022 | 1998-06-23 | Observation of Z Decays to b Quark Pairs at the Tevatron Collider | A search for Z boson decays to pairs of b-quark jets has been performed in the full dataset collected with the CDF detector at the Tevatron proton-antiproton collider. After the selection of a pure sample of bb events by means of the identification of secondary vertices from b-quark decays, we have used two kinematic v... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "t dorigo_1",
"name": "Tommaso Dorigo",
"publication_history": null,
"h_index": null,
"num_papers": null,
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}
] | null |
14630031 | math/9806131 | 1998-06-23 | Loss network representation of Peierls contours | We present a probabilistic approach for the study of systems with exclusions, in the regime traditionally studied via cluster-expansion methods. In this paper we focus on its application for the gases of Peierls contours found in the study of the Ising model at low temperatures, but most of the results are general. We ... | [
"math.PR",
"math-ph",
"math.MP"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16475317 | hep-ex/9806025 | 1998-06-24 | Measurement of the CP-Violation Parameter $\sin(2\beta)$ in $B^0_d/\bar{B}{^0_d} \to J/\psi K^0_S$ Decays | We present a measurement of the time-dependent asymmetry in the rate for $\bar{B}{^0_d}$ versus $B^0_d$ decays to $J/\psi K^0_S$. In the context of the Standard Model this is interpreted as a measurement of the CP-violation parameter $\sin(2\beta)$. A total of $198\pm 17$ $B^0_d/\bar{B}{^0_d}$ decays were observed in $... | [
"hep-ex"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s klimenko_2",
"name": "Sergey Klimenko",
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{
"author_id": "d knoblauch_1",
"name": "Dieter Knoblauch",
"publication_history": null,
"h_index": null,
"num_papers":... | null |
6638553 | astro-ph/9806353 | 1998-06-26 | The Lx-T Relation and Intracluster Gas Fractions of X-ray Clusters | We re-examine the X-ray luminosity-temperature relation using a nearly homogeneous data set of 24 clusters selected for statistically accurate temperature measurements and absence of strong cooling flows. The data exhibit a remarkably tight power-law relation between bolometric luminosity and temperature with a slope 2... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
30550760 | quant-ph/9806088 | 1998-06-26 | Quantum Games and Quantum Strategies | We investigate the quantization of non-zero sum games. For the particular case of the Prisoners' Dilemma we show that this game ceases to pose a dilemma if quantum strategies are allowed for. We also construct a particular quantum strategy which always gives reward if played against any classical strategy. | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17963236 | astro-ph/9806355 | 1998-06-26 | Early Evolution of Disk Galaxies : Formation of Bulges in Clumpy Young Galactic Disks | A new idea is proposed for the origin of bulges in spiral galaxies. Numerical simulations for the protogalactic collapse suggest strongly that galactic bulges have been assembled from massive clumps formed in the galactic disks in their early evolutionary phase. These clumps result from the gravitational instability of... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18611136 | gr-qc/9806110 | 1998-06-28 | Gravity on a parallelizable manifold. Exact solutions | The wave type field equation $\square \vt^a=\la \vt^a$, where $\vt^a$ is a coframe field on a space-time, was recently proposed to describe the gravity field. This equation has a unique static, spherical-symmetric, asymptotically-flat solution, which leads to the viable Yilmaz-Rosen metric. We show that the wave type f... | [
"gr-qc",
"hep-th",
"math-ph",
"math.MP"
] | null | [
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{
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{
"corpus_id": "7736176",
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] | [
{
"author_id": "y itin_1",
"name": "Y. Itin",
"publication_history": null,
"h_index": null,
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}
] | null |
15621066 | astro-ph/9806375 | 1998-06-29 | ROSAT PSPC observations of the outer regions of the Perseus cluster of galaxies | We present an analysis of four off-axis ROSAT PSPC observations of the Perseus cluster of galaxies (Abell~426). We detect the surface brightness profile to a radius of 80 arcmin ($\sim 2.4 h_{50}^{-1}$ Mpc) from the X-ray peak. The profile is measured in various sectors and in three different energy bands. Firstly, a c... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14334831 | quant-ph/9806094 | 1998-06-29 | Robustness of entanglement | In the quest of completely describing entanglement in the general case of a finite number of parties sharing a physical system of finite dimensional Hilbert space a new entanglement magnitude is introduced for its pure and mixed states: robustness. It corresponds to the minimal amount of mixing with locally prepared st... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119475398 | astro-ph/9806377 | 1998-06-29 | Rotating Nuclear Rings and Extreme Starbursts in Ultraluminous Galaxies | New high resolution interferometer data of 10 IR ultraluminous galaxies shows the molecular gas is in rotating nuclear rings or disks with radii 300 to 800 pc. Most of the CO flux comes from a moderate-density, warm, intercloud medium rather than self-gravitating clouds. Gas masses of ~ 5 x 10^9 Msun, 5 times lower tha... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
197531110 | astro-ph/9806395 | 1998-06-30 | Ring structure and warp of NGC5907 -- Interaction with dwarf galaxies | The edge-on, nearby spiral galaxy NGC5907 has long been used as the prototype of a ``non-interacting'' warped galaxy. We report here the discovery of two interactions with companion dwarf galaxies that substantially change this picture. First, a faint ring structure is discovered around this galaxy that is likely due t... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [
{
"corpus_id": "14795908",
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}
] | [
{
"author_id": "z shang_5",
"name": "Zhaohui Shang",
"publication_history": null,
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},
{
"author_id": "z zheng_12",
"name": "Zhongyuan Zheng",
"publication_history": null,
"h_index": null,
"num_papers": null,
... | null |
15947511 | quant-ph/9807006 | 1998-07-01 | The Heisenberg Representation of Quantum Computers | Since Shor's discovery of an algorithm to factor numbers on a quantum computer in polynomial time, quantum computation has become a subject of immense interest. Unfortunately, one of the key features of quantum computers - the difficulty of describing them on classical computers - also makes it difficult to describe an... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16396150 | astro-ph/9807028 | 1998-07-02 | Hyper-Accreting Black Holes and Gamma-Ray Bursts | A variety of current models for gamma-ray bursts (GRBs) suggest a common engine - a black hole of several solar masses accreting matter from a disk at a rate 0.01 to 10 solar masses per second. Using a numerical model for relativistic disk accretion, we have studied steady-state accretion at these high rates. Inside a ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7102535 | hep-ex/9807003 | 1998-07-03 | Evidence for oscillation of atmospheric neutrinos | We present an analysis of atmospheric neutrino data from a 33.0 kiloton-year (535-day) exposure of the Super-Kamiokande detector. The data exhibit a zenith angle dependent deficit of muon neutrinos which is inconsistent with expectations based on calculations of the atmospheric neutrino flux. Experimental biases and un... | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119402063 | gr-qc/9807009 | 1998-07-03 | Non stationary Einstein-Maxwell fields interacting with a superconducting cosmic string | Non stationary cylindrically symmetric exact solutions of the Einstein-Maxwell equations are derived as single soliton perturbations of a Levi-Civita metric, by an application of Alekseev inverse scattering method. We show that the metric derived by L. Witten, interpreted as describing the electrogravitational field of... | [
"gr-qc"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "r gleiser_1",
"name": "Reinaldo [\"J\"] Gleiser",
"publication_history": null,
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},
{
"author_id": "m tiglio_1",
"name": "Manuel Tiglio",
"publication_history": null,
"h_index": null,
"num_papers... | null |
125854 | math/9807016 | 1998-07-03 | The Computational Complexity of Knot and Link Problems | We consider the problem of deciding whether a polygonal knot in 3-dimensional Euclidean space is unknotted, capable of being continuously deformed without self-intersection so that it lies in a plane. We show that this problem, {\sc unknotting problem} is in {\bf NP}. We also consider the problem, {\sc unknotting probl... | [
"math.GT"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17316966 | astro-ph/9807047 | 1998-07-04 | Bulge-Disk Decomposition of 659 Spiral and Lenticular Galaxy Brightness Profiles | We present one of the largest homogeneous sets of spiral and lenticular galaxy brightness profile decompositions completed to date. The 659 galaxies in our sample have been fitted with a deVaucouleurs' law for the bulge component and an inner-truncated exponential for the disk component. Of the 659 galaxies in the samp... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
29052658 | astro-ph/9807046 | 1998-07-04 | The Expulsion of Stellar Envelopes in Core-Collapse Supernovae | We examine the relation between presupernova stellar structure and the distribution of ejecta in core-collapse supernovae, assuming adiabatic, spherically symmetric flow. We develop a simple yet accurate formula for the blastwave shock velocity, and demonstrate that the entire final density distribution can be approxim... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15706959 | astro-ph/9807055 | 1998-07-06 | Chemical Equilibrium Abundances in Brown Dwarf and Extrasolar Giant Planet Atmospheres | We calculate detailed chemical abundance profiles for a variety of brown dwarf and extrasolar giant planet atmosphere models, focusing in particular on Gliese 229B, and derive the systematics of the changes in the dominant reservoirs of the major elements with altitude and temperature. We assume an Anders and Grevesse ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15856194 | cond-mat/9807101 | 1998-07-07 | Attractor neural networks storing multiple space representations: a model for hippocampal place fields | A recurrent neural network model storing multiple spatial maps, or ``charts'', is analyzed. A network of this type has been suggested as a model for the origin of place cells in the hippocampus of rodents. The extremely diluted and fully connected limits are studied, and the storage capacity and the information capacit... | [
"cond-mat.dis-nn",
"q-bio"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
38595105 | cond-mat/9807099 | 1998-07-07 | How to mesh up Ewald sums (I): A theoretical and numerical comparison of various particle mesh routines | Standard Ewald sums, which calculate e.g. the electrostatic energy or the force in periodically closed systems of charged particles, can be efficiently speeded up by the use of the Fast Fourier Transformation (FFT). In this article we investigate three algorithms for the FFT-accelerated Ewald sum, which attracted a wid... | [
"cond-mat.soft"
] | null | [
"target.key_reference"
] | null | null | null |
32323236 | cond-mat/9807100 | 1998-07-07 | How to mesh up Ewald sums (II): An accurate error estimate for the P3M algorithm | We construct an accurate estimate for the root mean square force error of the particle-particle-particle-mesh (P3M) algorithm by extending a single particle pair error measure which has been given by Hockney and Eastwood. We also derive an easy-to-use analytic approximation to the error formula. This allows a straightf... | [
"cond-mat.soft"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10562785 | math/9807039 | 1998-07-08 | Constant mean curvature surfaces with Delaunay ends | We construct a new class of complete constant mean curvature surfaces in R^3. These are geometrically different than the surfaces constructed by Kapouleas' gluing technique. These are obtained by piecing together half-Delaunay surfaces to the truncations of minimal k-noids. The gluing techniques are new: the surfaces a... | [
"math.DG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
38054395 | hep-ph/9807282 | 1998-07-08 | High Energy Neutrinos from Astrophysical Sources: An Upper Bound | We show that cosmic-ray observations set a model-independent upper bound to the flux of high-energy, > 10^14 eV, neutrinos produced by photo-meson (or p-p) interactions in sources of size not much larger than the proton photo-meson (or pp) mean-free-path. The bound applies, in particular, to neutrino production by eith... | [
"hep-ph",
"astro-ph",
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
8408979 | hep-th/9807080 | 1998-07-10 | Superconformal Field Theory on Threebranes at a Calabi-Yau Singularity | Just as parallel threebranes on a smooth manifold are related to string theory on $AdS_5\times {\bf S}^5$, parallel threebranes near a conical singularity are related to string theory on $AdS_5\times X_5$, for a suitable $X_5$. For the example of the conifold singularity, for which $X_5=(SU(2)\times SU(2))/U(1)$, we ar... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
16613734 | cond-mat/9807201 | 1998-07-14 | Glass transition in self organizing cellular patterns | We have considered the dynamical evolution of cellular patterns controlled by a stochastic Glauber process determined by the deviations of local cell topology from that of a crystalline structure. Above a critical temperature evolution is towards a common equilibrium state from any initial configuration, but beneath th... | [
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "t aste_1",
"name": "Tomaso Aste",
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},
{
"author_id": "d sherrington_1",
"name": "David Sherrington",
"publication_history": null,
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"num_papers": null... | null |
16918470 | astro-ph/9807131 | 1998-07-14 | The Population of Weak Mg II Absorbers I. A Survey of 26 QSO HIRES/Keck Spectra | We present a search for "weak" MgII absorbers [those with W_r(2796) < 0.3 A in the HIRES/Keck spectra of 26 QSOs. We found 30, of which 23 are newly discovered. The spectra are 80% complete to W_r(2796) = 0.02 A and have a cumulative redshift path of ~17.2 for the redshift range 0.4 < z < 1.4. The number of absorbers p... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16689082 | hep-th/9807095 | 1998-07-14 | The rigid limit in Special K\"ahler geometry for SU(2) SYM with a massive quark hypermultiplet | We study the rigid limit of type IIB string theory, compactified on a K3 fibration, which, near its conifold limit, contains the Seiberg-Witten curve for N=2 SU(2) Super-Yang-Mills with a massive hypermultiplet in the fundamental representation. Instead of working with an ALE approximation, we treat the K3 fibration gl... | [
"hep-th"
] | 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 |
6726744 | math/9807080 | 1998-07-15 | Multisymplectic geometry, variational integrators, and nonlinear PDEs | This paper presents a geometric-variational approach to continuous and discrete mechanics and field theories. Using multisymplectic geometry, we show that the existence of the fundamental geometric structures as well as their preservation along solutions can be obtained directly from the variational principle. In parti... | [
"math.DG",
"cs.NA",
"math-ph",
"math.DS",
"math.MP",
"math.NA",
"math.SG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14886176 | hep-th/9807109 | 1998-07-15 | Theta Dependence In The Large N Limit Of Four-Dimensional Gauge Theories | The theta dependent of pure gauge theories in four dimensions can be studied using a duality of large N gauge theories with string theory on a certain spacetime. Via this duality, one can argue that for every theta, there are infinitely many vacua that are stable in the large N limit. The true vacuum, found by minimizi... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7937333 | math/9807078 | 1998-07-15 | Geometry and curvature of diffeomorphism groups with $H^1$ metric and mean hydrodynamics | Recently, Holm, Marsden, and Ratiu [1998] have derived a new model for the mean motion of an ideal fluid in Euclidean space given by the equation $\dot{V}(t) + \nabla_{U(t)} V(t) - \alpha^2 [\nabla U(t)]^t \cdot \triangle U(t) = -\text{grad} p(t)$ where $\text{div} U=0$, and $V = (1- \alpha^2 \triangle)U$. In this mode... | [
"math.AP",
"math.DG"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17918766 | cond-mat/9807222 | 1998-07-15 | Quenched complexity of the p-spin spherical spin-glass with external magnetic field | We consider the p-spin spherical spin-glass model in the presence of an external magnetic field as a general example of a mean-field system where a one step replica symmetry breaking (1-RSB) occurs. In this context we compute the complexity of the Thouless-Anderson-Palmer states, performing a quenched computation. We f... | [
"cond-mat.dis-nn",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "a cavagna_1",
"name": "Andrea Cavagna",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j garrahan_1",
"name": "Juan [\"P.\"] Garrahan",
"publication_history": null,
"h_index": null,
"num_paper... | null |
264634327 | astro-ph/9807150 | 1998-07-15 | Propagation of cosmic-ray nucleons in the Galaxy | We describe a method for the numerical computation of the propagation of primary and secondary nucleons, primary electrons, and secondary positrons and electrons. Fragmentation and energy losses are computed using realistic distributions for the interstellar gas and radiation fields, and diffusive reacceleration is als... | [
"astro-ph",
"hep-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117489210 | astro-ph/9807152 | 1998-07-15 | ESO Imaging Survey IV. Exploring the EIS Multicolor Data | This paper presents preliminary lists of potentially interesting point-like sources extracted from multicolor data obtained for a 1.7 square degree region near the South Galactic Pole. The region has been covered by the ESO Imaging Survey (EIS) in B, V,I, and offers a unique combination of area and depth.These lists, c... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "s zaggia_1",
"name": "Simone Zaggia",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "i hook_1",
"name": "Isobel [\"M.\"] Hook",
"publication_history": null,
"h_index": null,
"num_papers": null... | null |
3262500 | cmp-lg/9807006 | 1998-07-17 | A Maximum-Entropy Partial Parser for Unrestricted Text | This paper describes a partial parser that assigns syntactic structures to sequences of part-of-speech tags. The program uses the maximum entropy parameter estimation method, which allows a flexible combination of different knowledge sources: the hierarchical structure, parts of speech and phrasal categories. In effect... | [
"cmp-lg",
"cs.CL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
5645241 | astro-ph/9807187 | 1998-07-17 | Star Formation in Galaxies Along the Hubble Sequence | Observations of star formation rates (SFRs) in galaxies provide vital clues to the physical nature of the Hubble sequence, and are key probes of the evolutionary properties of galaxies. The focus of this review is on the broad patterns in the star formation properties of galaxies along the Hubble sequence, and their im... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119409673 | gr-qc/9807047 | 1998-07-17 | Cauchy-perturbative matching and outer boundary conditions: computational studies | We present results from a new technique which allows extraction of gravitational radiation information from a generic three-dimensional numerical relativity code and provides stable outer boundary conditions. In our approach we match the solution of a Cauchy evolution of the nonlinear Einstein field equations to a set ... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14688083 | math/9807091 | 1998-07-17 | Quantum Symmetry Groups of Finite Spaces | We determine the quantum automorphism groups of finite spaces and find they are all compact quantum groups in the sense of Woronowicz. This solves a problem of Connes for finite spaces. | [
"math.OA",
"math-ph",
"math.MP",
"math.QA"
] | null | [
"target.key_reference"
] | null | null | null |
5508021 | cmp-lg/9807008 | 1998-07-17 | A Linguistically Interpreted Corpus of German Newspaper Text | In this paper, we report on the development of an annotation scheme and annotation tools for unrestricted German text. Our representation format is based on argument structure, but also permits the extraction of other kinds of representations. We discuss several methodological issues and the analysis of some phenomena.... | [
"cmp-lg",
"cs.CL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
7232952 | quant-ph/9807053 | 1998-07-18 | Quantum Associative Memory | This paper combines quantum computation with classical neural network theory to produce a quantum computational learning algorithm. Quantum computation uses microscopic quantum level effects to perform computational tasks and has produced results that in some cases are exponentially faster than their classical counterp... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
1082 | cmp-lg/9807010 | 1998-07-20 | Automatically Creating Bilingual Lexicons for Machine Translation from Bilingual Text | A method is presented for automatically augmenting the bilingual lexicon of an existing Machine Translation system, by extracting bilingual entries from aligned bilingual text. The proposed method only relies on the resources already available in the MT system itself. It is based on the use of bilingual lexical templat... | [
"cmp-lg",
"cs.CL"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
264714080 | hep-lat/9807032 | 1998-07-20 | Towards a lattice determination of the $B^\ast B \pi$ coupling | The coupling $g_{B^\ast B \pi}$ is related to the form factor at zero momentum of the axial current between $B^\ast$- and $B$-states. This form factor is evaluated on the lattice using static heavy quarks and light quark propagators determined by a stochastic inversion of the fermionic bilinear. The $\gBBP$ coupling is... | [
"hep-lat",
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g divitiis_0",
"name": "G. [\"M.\",\"de\"] Divitiis",
"publication_history": null,
"h_index": null,
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"num_citations": null
},
{
"author_id": "l debbio_1",
"name": "Luigi [\"Del\"] Debbio",
"publication_history": null,
"h_index": null,
... | null |
14938875 | hep-th/9807174 | 1998-07-22 | Black Holes, Newtonian Scattering and Conformal Field Theory | We discuss non-relativistic scattering by a Newtonian potential. We show that the gray-body factors associated with scattering by a black hole exhibit the same functional dependence as scattering amplitudes in the Newtonian limit, which should be the weak-field limit of any quantum theory of gravity. This behavior aris... | [
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g siopsis_1",
"name": "George Siopsis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
17088574 | math/9807127 | 1998-07-23 | The Projective Geometry of the Gale Transform | The Gale transform, an involution on sets of points in projective space, appears in a multitude of guises, in subjects as diverse as optimization, coding theory, theta-functions, and recently in our proof that certain general sets of points fail to satisfy the minimal free resolution conjecture. In this paper we reexam... | [
"math.AG",
"math.AC"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
118937256 | quant-ph/9807070 | 1998-07-24 | A quantum algorithm providing exponential speed increase for finding eigenvalues and eigenvectors | We describe a new polynomial time quantum algorithm that uses the quantum fast fourier transform to find eigenvalues and eigenvectors of a Hamiltonian operator, and that can be applied in cases (commonly found in ab initio physics and chemistry problems) for which all known classical algorithms require exponential time... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
2679107 | astro-ph/9807307 | 1998-07-29 | A Planetary Companion to the Nearby M4 Dwarf, Gliese 876 | Doppler measurements of the M4 dwarf star, Gliese 876, taken at both Lick and Keck Observatory reveal periodic, Keplerian velocity variations with a period of 61 days. The orbital fit implies that the companion has a mass of, M = 2.1 MJUP /sin i, an orbital eccentricity of, e = 0.27+-0.03, and a semimajor axis of, a = ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119378477 | cond-mat/9807384 | 1998-07-29 | Low-temperature properties of classical, geometrically frustrated antiferromagnets | We study the ground-state and low-energy properties of classical vector spin models with nearest-neighbour antiferromagnetic interactions on a class of geometrically frustrated lattices which includes the kagome and pyrochlore lattices. We explore the behaviour of these magnets that results from their large ground-stat... | [
"cond-mat.stat-mech",
"cond-mat.dis-nn"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11984014 | astro-ph/9807299 | 1998-07-29 | The 1995 Pilot Campaign of PLANET: Searching for Microlensing Anomalies through Precise, Rapid, Round-the-Clock Monitoring | PLANET (the Probing Lensing Anomalies NETwork) is a worldwide collaboration of astronomers whose primary goal is to monitor microlensing events densely and precisely in order to detect and study anomalies that contain information about Galactic lenses and sources that would otherwise be unobtainable. The results of PLA... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117711466 | hep-ph/9807556 | 1998-07-30 | First-Order QCD Effects in t-tbar Production at the NLC Above Threshold | We study the effects of gluon interference in the production and semi-leptonic decay of a t-tbar pair above threshold at the Next Linear Collider (NLC). We calculate all matrix elements to next-to-leading order and use the resulting expressions for the development of a Monte Carlo event generator. Our results show effe... | [
"hep-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "g siopsis_1",
"name": "George Siopsis",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
}
] | null |
15967648 | astro-ph/9807317 | 1998-07-30 | A theoretical unifying scheme for gamma-ray bright blazars | The phenomenology of gamma-ray bright blazars can be accounted for by a sequence in the source power and intensity of the diffuse radiation field surrounding the relativistic jet. Correspondingly, the equilibrium particle distribution peaks at different energies. This leads to a trend in the observed properties: an inc... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16334253 | cond-mat/9807418 | 1998-07-31 | Ab initio pseudopotentials for electronic structure calculations of poly-atomic systems using density-functional theory | The package fhi98PP allows one to generate norm-conserving pseudopotentials adapted to density-functional theory total-energy calculations for a multitude of elements throughout the periodic table, including first-row and transition metal elements. The package also facilitates a first assessment of the pseudopotentials... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
18989221 | astro-ph/9807336 | 1998-07-31 | ESO Imaging Survey VII. Distant Cluster Candidates over 12 square degrees | In this paper the list of candidate clusters identified from the I-band data of the ESO Imaging Survey (EIS) is completed using the images obtained over a total area of about 12 square degrees. Together with the data reported earlier the total I-band coverage of EIS is 17 square degrees, which has yielded a sample of 2... | [
"astro-ph"
] | null | [
"target.author.publication_history",
"target.author.publication_history.key_reference"
] | [] | [
{
"author_id": "m scodeggio_2",
"name": "Marco Scodeggio",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "l olsen_1",
"name": "L. [\"F.\"] Olsen",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
209841585 | hep-ex/9807032 | 1998-07-31 | The Observation of Up-going Charged Particles Produced by High Energy Muons in Underground Detectors | An experimental study of the production of up-going charged particles in inelastic interactions of down-going underground muons is reported, using data obtained from the MACRO detector at the Gran Sasso Laboratory. In a sample of 12.2 10^6 single muons, corresponding to a detector livetime of 1.55 y, 243 events are obs... | [
"hep-ex"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
47329118 | cs/9808101 | 1998-07-31 | The Computational Complexity of Probabilistic Planning | We examine the computational complexity of testing and finding small plans in probabilistic planning domains with both flat and propositional representations. The complexity of plan evaluation and existence varies with the plan type sought; we examine totally ordered plans, acyclic plans, and looping plans, and partial... | [
"cs.AI"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119532807 | quant-ph/9807091 | 1998-07-31 | General teleportation channel, singlet fraction and quasi-distillation | We prove a theorem on direct relation between the optimal fidelity $f_{max}$ of teleportation and the maximal singlet fraction $F_{max}$ attainable by means of trace-preserving LQCC action (local quantum and classical communication). For a given bipartite state acting on $C^d\otimes C^d$ we have $f_{max}= {F_{max}d+1\o... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119513295 | cond-mat/9808010 | 1998-08-03 | Dynamic Fluctuations of Semiflexible Polymers | We develop a scaling theory to describe dynamic fluctuations of a semiflexible polymer and find several distinct regimes. We performed simulations to characterize the longitudinal and transverse dynamics; using ensemble averaging for a range of different degrees of coarse-graining we avoid the problems of slow equilibr... | [
"cond-mat.soft",
"cond-mat.stat-mech"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
15404251 | cond-mat/9808026 | 1998-08-03 | Coupled quantum dots as quantum gates | We consider a new quantum gate mechanism based on electron spins in coupled semiconductor quantum dots. Such gates provide a general source of spin entanglement and can be used for quantum computers. We determine the exchange coupling J in the effective Heisenberg model as a function of magnetic (B) and electric fields... | [
"cond-mat.mes-hall",
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16628361 | math/9808018 | 1998-08-04 | Plane partitions II: 5 1/2 symmetry classes | We present new, simple proofs for the enumeration of five of the ten symmetry classes of plane partitions contained in a given box. Four of them are derived from a simple determinant evaluation, using combinatorial arguments. The previous proofs of these four cases were quite complicated. For one more symmetry class we... | [
"math.CO"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119510028 | hep-th/9808014 | 1998-08-04 | Branes at conical singularities and holography | For supergavrity solutions which are the product of an anti-de Sitter space with an Einstein space X, we study the relation between the amount of supersymmetry preserved and the geometry of X. Depending on the dimension and the amount of supersymmetry, the following geometries for X are possible, in addition to the max... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference",
"target.key_reference"
] | null | null | null |
119496090 | hep-ph/9808216 | 1998-08-04 | Instantons and the QCD Vacuum Wavefunctional | We analyze the instanton transitions in the framework of the gauge invariant variational calculation in the pure Yang-Mills theory. Instantons are identified with the saddle points in the integration over the gauge group which projects the Gaussian wave functional onto the gauge invariant physical Hilbert space. We sho... | [
"hep-ph",
"hep-th"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "w brown_4",
"name": "William [\"E.\"] Brown",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "j garrahan_1",
"name": "Juan [\"P.\"] Garrahan",
"publication_history": null,
"h_index": null,
"num... | null |
7473924 | hep-th/9808025 | 1998-08-05 | Self-dual tensors and gravitational anomalies in 4n+2 dimensions | Starting from a manifestly Lorentz- and diffeomorphism-invariant classical action we perform a perturbative derivation of the gravitational anomalies for chiral bosons in 4n+2 dimensions. The manifest classical invariance is achieved using a newly developed method based on a scalar auxiliary field and two new bosonic l... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
11526552 | quant-ph/9808009 | 1998-08-05 | Fisher information in quantum statistics | Braunstein and Caves (1994) proposed to use Helstrom's {\em quantum information} number to define, meaningfully, a metric on the set of all possible states of a given quantum system. They showed that the quantum information is nothing else than the maximal Fisher information in a measurement of the quantum system, maxi... | [
"quant-ph",
"math.ST",
"stat.TH"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17152546 | chao-dyn/9808005 | 1998-08-05 | A local fluctuation theorem | A mechanism for the validity of a local version of the fluctuation theorem, uniform in the system size, is discussed for a reversible chain of weakly coupled Anosov systems. | [
"chao-dyn",
"nlin.CD"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
17503583 | hep-th/9808032 | 1998-08-06 | Topological Black Holes in Anti-de Sitter Space | We consider a class of black hole solutions to Einstein's equations in d dimensions with a negative cosmological constant. These solutions have the property that the horizon is a (d-2)-dimensional Einstein manifold of positive, zero, or negative curvature. The mass, temperature, and entropy are calculated. Using the co... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14839644 | hep-th/9808037 | 1998-08-06 | Bulk and Boundary Dynamics in BTZ Black Holes | Recently, the AdS/CFT conjecture of Maldacena has been investigated in Lorentzian signature by Balasubramanian et. al. We extend this investigation to Lorentzian BTZ black hole spacetimes, and study the bulk and boundary behaviour of massive scalar fields both in the non-extremal and extremal case. Using the bulk-bound... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14830040 | hep-th/9808038 | 1998-08-06 | The GS String Action on AdS_5 x S^5 | We present a simple form of the Type IIB string action on $AdS_5\times S^5$. The result is achieved by fixing $\kappa$-symmetry in the Killing spinor gauge defined by the projector of the Killing spinor of the D3 brane. We show explicitly that in this gauge the superspace is greatly simplified which is the crucial ingr... | [
"hep-th"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
10371164 | hep-th/9808042 | 1998-08-07 | Hopf Algebras, Renormalization and Noncommutative Geometry | We explore the relation between the Hopf algebra associated to the renormalization of QFT and the Hopf algebra associated to the NCG computations of transverse index theory for foliations. | [
"hep-th",
"math.OA",
"math.QA"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16023060 | astro-ph/9808054 | 1998-08-07 | Extragalactic radio source evolution under the dual-population unification scheme | We show that a dual-population unification scheme provides a successful paradigm with which to describe the evolution and beaming of all bright extragalactic radio sources. The paradigm consists of two intrinsic radio-source populations, based on the two distinct radio-galaxy morphologies of Fanaroff-Riley classes I an... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14238537 | astro-ph/9808087 | 1998-08-10 | Drizzle: A Method for the Linear Reconstruction of Undersampled Images | We have developed a method for the linear reconstruction of an image from undersampled, dithered data. The algorithm, known as Variable-Pixel Linear Reconstruction, or informally as Drizzle, preserves photometry and resolution, can weight input images according to the statistical significance of each pixel, and removes... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
9749029 | hep-th/9808079 | 1998-08-13 | The AdS/CFT Correspondence and a New Positive Energy Conjecture for General Relativity | We examine the AdS/CFT correspondence when the gauge theory is considered on a compactified space with supersymmetry breaking boundary conditions. We find that the corresponding supergravity solution has a negative energy, in agreement with the expected negative Casimir energy in the field theory. Stability of the gaug... | [
"hep-th",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
119444449 | astro-ph/9808163 | 1998-08-16 | Cosmic microwave background anisotropies: Nonlinear dynamics | We develop a new approach to local nonlinear effects in cosmic microwave background anisotropies, and discuss the qualitative features of these effects. New couplings of the baryonic velocity to radiation multipoles are found, arising from nonlinear Thomson scattering effects. We also find a new nonlinear shear effect ... | [
"astro-ph",
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
14409664 | quant-ph/9808027 | 1998-08-17 | Parallel Quantum Computation and Quantum Codes | We propose a definition of QNC, the quantum analog of the efficient parallel class NC. We exhibit several useful gadgets and prove that various classes of circuits can be parallelized to logarithmic depth, including circuits for encoding and decoding standard quantum error-correcting codes, or more generally any circui... | [
"quant-ph",
"math.QA"
] | null | [
"target.key_reference"
] | null | null | null |
8820432 | astro-ph/9808184 | 1998-08-18 | The Synchrotron Shock Model Confronts a `Line of Death' in the BATSE Gamma-Ray Burst Data | The synchrotron shock model (SSM) for gamma-ray burst emission makes a testable prediction: that the observed low-energy power-law photon number spectral index cannot exceed -2/3 (where the photon model is defined with a positive index: dN/dE is proportional to E^alpha). We have collected time-resolved spectral fit par... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
6942275 | cond-mat/9808204 | 1998-08-18 | Finite temperature molecular dynamics study of unstable stacking fault free energies in silicon | We calculate the free energies of unstable stacking fault (USF) configurations on the glide and shuffle slip planes in silicon as a function of temperature, using the recently developed Environment Dependent Interatomic Potential (EDIP). We employ the molecular dynamics (MD) adiabatic switching method with appropriate ... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "m koning_0",
"name": "Maurice [\"de\"] Koning",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "a antonelli_2",
"name": "Alex Antonelli",
"publication_history": null,
"h_index": null,
"num_pape... | null |
14521936 | astro-ph/9808176 | 1998-08-18 | Variable Stars: which Nyquist Frequency ? | In the analysis of variable stars, the problem of sampling is central. This article focusses on the determination of the Nyquist frequency. It is well defined in the case of regular sampling. However, the time series of variable stars observations are generally unevenly sampled. Fourier analysis using the spectral wind... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
16843529 | cond-mat/9808211 | 1998-08-19 | Simulations of mechanics and structure of nanomaterials --- from nanoscale to coarser scales | We discuss how simulations of mechanical properties of materials require descriptions at many different length scales --- from the nanoscale where an atomic description is appropriate, through a mesoscale where dislocation based descriptions may be useful, to macroscopic length scales. In some materials, such as nanocr... | [
"cond-mat.mtrl-sci"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "j schiøtz_1",
"name": "Jakob Schiøtz",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "t vegge_1",
"name": "Tejs Vegge",
"publication_history": null,
"h_index": null,
"num_papers": null,
"n... | null |
1207793 | astro-ph/9808199 | 1998-08-19 | The Dynamic Formation of Prominence Condensations | We present simulations of a model for the formation of a prominence condensation in a coronal loop. The key idea behind the model is that the spatial localization of loop heating near the chromosphere leads to a catastrophic cooling in the corona (Antiochos & Klimchuk 1991). Using a new adaptive grid code, we simulate ... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117726245 | cond-mat/9808231 | 1998-08-20 | Measurements of the Magnetic Field Dependence of Lambda in YBa_2Cu_3O_6.95: Results as a Function of Temperature and Field Orientation | We present measurements of the magnetic field dependence of the penetration depth Lambda(H) for untwinned YBa_2Cu_3O_6.95 for temperatures from 1.2 to 70 K in dc fields up to 42 gauss and directions 0, 45 and 90 degrees with respect to the crystal b-axis. The experiment uses an ac susceptometer with fields applied para... | [
"cond-mat.supr-con"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c bidinosti_1",
"name": "Christopher [\"P.\"] Bidinosti",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "w hardy_1",
"name": "Walter [\"Newbold\"] Hardy",
"publication_history": null,
"h_index": n... | null |
2973336 | astro-ph/9808264 | 1998-08-24 | Radical Compression of Cosmic Microwave Background Data | Powerful constraints on theories can already be inferred from existing CMB anisotropy data. But performing an exact analysis of available data is a complicated task and may become prohibitively so for upcoming experiments with \gtrsim10^4 pixels. We present a method for approximating the likelihood that takes power spe... | [
"astro-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
73624873 | quant-ph/9808042 | 1998-08-24 | Optimal Quantum Clocks | A quantum clock must satisfy two basic constraints. The first is a bound on the time resolution of the clock given by the difference between its maximum and minimum energy eigenvalues. The second follows from Holevo's bound on how much classical information can be encoded in a quantum system. We show that asymptoticall... | [
"quant-ph"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
117817191 | astro-ph/9808292 | 1998-08-25 | Cosmic microwave background anisotropy power spectrum statistics for high precision cosmology | As the era of high precision cosmology approaches, the empirically determined power spectrum of the microwave background anisotropy, $C_l$, will provide a crucial test for cosmological theories. We present a unified semi-analytic framework for the study of the statistical properties of the $C_l$ coefficients computed f... | [
"astro-ph"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "b wandelt_1",
"name": "Benjamin [\"D.\"] Wandelt",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "e hivon_1",
"name": "Eric Hivon",
"publication_history": null,
"h_index": null,
"num_papers": ... | null |
1623 | cmp-lg/9808015 | 1998-08-26 | Error-Driven Pruning of Treebank Grammars for Base Noun Phrase Identification | Finding simple, non-recursive, base noun phrases is an important subtask for many natural language processing applications. While previous empirical methods for base NP identification have been rather complex, this paper instead proposes a very simple algorithm that is tailored to the relative simplicity of the task. I... | [
"cmp-lg",
"cs.CL"
] | null | [
"target.author.publication_history"
] | [] | [
{
"author_id": "c cardie_1",
"name": "Claire Cardie",
"publication_history": null,
"h_index": null,
"num_papers": null,
"num_citations": null
},
{
"author_id": "d pierce_1",
"name": "David [\"R.\"] Pierce",
"publication_history": null,
"h_index": null,
"num_papers": n... | null |
39901970 | gr-qc/9808076 | 1998-08-27 | Matched filtering of gravitational waves from inspiraling compact binaries: Computational cost and template placement | We estimate the number of templates, computational power, and storage required for a one-step matched filtering search for gravitational waves from inspiraling compact binaries. These estimates should serve as benchmarks for the evaluation of more sophisticated strategies such as hierarchical searches. We use waveform ... | [
"gr-qc"
] | null | [
"target.author.publication_history.key_reference"
] | null | null | null |
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