output
19912026
Showing 2004Show all

269 papers · 1 filter

hep-ph2004★ 5 cited

Higgsless Electroweak Symmetry Breaking

Csaba Csaki

We discuss the possibility of breaking the electroweak symmetry in theories with extra dimensions via boundary conditions, without a physical Higgs scalar in the spectrum. In these…

gr-qc2004★ 72 cited

Boundary Conditions for the Einstein Evolution System

Lawrence E. Kidder, Lee Lindblom, Mark A. Scheel +2

New boundary conditions are constructed and tested numerically for a general first-order form of the Einstein evolution system. These conditions prevent constraint violations from…

cond-mat.mes-hall2004★ 98 cited

Rate equations for Coulomb blockade with ferromagnetic leads

Stephan Braig, Piet W. Brouwer

We present a density-matrix rate-equation approach to sequential tunneling through a metal particle weakly coupled to ferromagnetic leads. The density-matrix description is able to…

cs.CL2004★ 5 cited

A Framework for Creating Natural Language User Interfaces for Action-Based Applications

Stephen Chong, Riccardo Pucella

In this paper we present a framework for creating natural language interfaces to action-based applications. Our framework uses a number of reusable application-independent componen…

cond-mat.mes-hall2004★ 6 cited

Mesoscopic bound on anisotropy in itinerant ferromagnets

Piet W. Brouwer, Denis A. Gorokhov

We calculate the anisotropy energy of a single-domain ferromagnetic particle in which the only source of anisotropy is the presence of non-magnetic impurities. We find that such an…

astro-ph2004★ 14 cited

The Neon Abundance of Galactic Wolf-Rayet Stars

J. D. T. Smith, J. R. Houck

The fast, dense winds which characterize Wolf-Rayet (WR) stars obscure their underlying cores, and complicate the verification of evolving core and nucleosynthesis models. Core evo…

astro-ph2004★ 74 cited

Complete Multiwavelength Characterization of Faint Chandra X-ray Sources Seen in the Spitzer Wide-Area IR Extragalactic (SWIRE) Survey

A. Franceschini, J. Manners, M. Polletta +24

We exploit deep combined observations with Spitzer and Chandra of the SWIRE survey in the ELAIS-N1 region, to investigate the nature of the faint X-ray and IR sources in common, to…

astro-ph2004★ 92 cited

A new Search for Carbon Monoxide Absorption in the Transmission Spectrum of the Extrasolar Planet HD 209458b

Drake Deming, Timothy M. Brown, David Charbonneau +2

We have revisited the search for carbon monoxide absorption features in transmission during the transit of the extrasolar planet HD 209458b. We acquired 1077 high resolution spectr…

astro-ph2004★ 150 cited

HI Narrow Self-Absorption in Dark Clouds: Correlations with Molecular Gas and Implications for Cloud Evolution and Star Formation

P. F. Goldsmith, D. Li

We present the results of a comparative study of HI narrow self-absorption (HINSA), OH, 13CO, and C18O in five dark clouds. The HINSA follows the distribution of the emission of th…

hep-th2004★ 26 cited

Slow Roll in Brane Inflation

Sarah E. Shandera

We address the issue of slow-roll in string theory models of inflation. Using a Kähler transformation and results from the D3-D7 model, we show why we expect flat directions to be…

gr-qc2004★ 1 cited

Recent analytical and numerical techniques applied to the Einstein equations

Dave Neilsen, Luis Lehner, Olivier Sarbach +1

Combining deeper insight of Einstein's equations with sophisticated numerical techniques promises the ability to construct accurate numerical implementations of these equations. We…

hep-ex2004★ 24 cited

CKM Results From CLEO

Karl M. Ecklund

I present recent CLEO measurements of inclusive semileptonic B decay spectra and the branching fraction. I also report preliminary results from a combined fit to spectral moments,…

astro-ph2004★ 127 cited

Spectral energy distributions and luminosities of galaxies and AGN in the SPITZER SWIRE Legacy Survey

M. Rowan-Robinson, T. Babbedge, J. Surace +28

We discuss optical associations, spectral energy distributions and photometric redshifts for SWIRE sources in the ELAIS-N1 area and the Lockman Validation Field. The band-merged IR…

cond-mat.mes-hall2004★ 150 cited

Time-Resolved Intraband Relaxation of Strongly-Confined Electrons and Holes in Colloidal PbSe Nanocrystals

Jeffrey M. Harbold, Frank W. Wise, Hui Du +3

The relaxation of strongly-confined electrons and holes between 1P and 1S levels in colloidal PbSe nanocrystals has been time-resolved using femtosecond transient absorption spectr…

astro-ph2004★ 1 cited

350 micron Galactic Center Dust Observations with SHARC II

Johannes Staguhn, Dominic Benford, Mark Morris +1

We present first and preliminary submillimeter continuum images of the Galactic Center region obtained with the new Caltech Submillimeter Observatory facility camera SHARC II. The…

physics.optics2004★ 200 cited

Coherent resonant interactions and slow light with molecules confined in photonic band-gap fibers

Saikat Ghosh, Jay E. Sharping, Dimitre G. Ouzounov +1

We investigate resonant nonlinear optical interactions and demonstrate induced transparency in acetylene molecules in a hollow-core photonic band-gap fiber at 1.5m. The induced…

gr-qc2004★ 24 cited

Quasi-local contribution to the gravitational self-force

Warren G. Anderson, Eanna E. Flanagan, Adrian C. Ottewill

The gravitational self-force on a point particle moving in a vacuum background spacetime can be expressed as an integral over the past worldline of the particle, the so-called tail…

math.NA2004★ 11 cited

A Fully Sparse Implementation of a Primal-Dual Interior-Point Potential Reduction Method for Semidefinite Programming

Gun Srijuntongsiri, Stephen A. Vavasis

In this paper, we show a way to exploit sparsity in the problem data in a primal-dual potential reduction method for solving a class of semidefinite programs. When the problem data…

hep-ph2004★ 92 cited

Collider Phenomenology of the Higgsless Models

Andreas Birkedal, Konstantin Matchev, Maxim Perelstein

We identify and study the signatures of the recently proposed Higgsless models at the Large Hadron Collider (LHC). We concentrate on tests of the mechanism of partial unitarity res…

hep-ph2004★ 41 cited

Two-Loop Relations for Heavy-Quark Parameters in the Shape-Function Scheme

Matthias Neubert

Moments of the renormalized B-meson shape function provide a natural way to define short-distance, running heavy-quark parameters such as the b-quark mass and kinetic energy. These…

hep-ph2004

Heavy Quarkonium Physics

N. Brambilla, M. Krämer, R. Mussa +82

This report is the result of the collaboration and research effort of the Quarkonium Working Group over the last three years. It provides a comprehensive overview of the state of t…

gr-qc2004★ 3 cited

Boundary conditions for Einstein's field equations: Analytical and numerical analysis

Olivier Sarbach, Manuel Tiglio

Outer boundary conditions for strongly and symmetric hyperbolic formulations of 3D Einstein's field equations with a live gauge condition are discussed. The boundary conditions hav…

cond-mat.other2004★ 197 cited

Energy and variance optimization of many body wave functions

C. J. Umrigar, Claudia Filippi

We present a simple, robust and efficient method for varying the parameters in a many-body wave function to optimize the expectation value of the energy. The effectiveness of the m…

hep-ex2004★ 43 cited

Measuring cal B(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_D^+

G. Bonvicini, CLEO Collaboration

In 60 inverse-pb of data taken on the psi(3770) resonance with the CLEO-c detector, we find 8 D+ -> mu+ nu decay candidates that are mostly signal, containing only 1 estimated back…