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math.DG2003★ 7 cited

The Futaki invariant and the Mabuchi energy of a complete intersection

D. H. Phong, Jacob Sturm

We study the Futaki invariant and the Mabuchi K-energy of a Kähler manifold using the Deligne pairing technique developed in earlier papers. We first prove a rather simple char…

math.DG2003★ 2 cited

On asymptotics for the Mabuchi energy functional

D. H. Phong, Jacob Sturm

If is a projective manifold in , then one can associate to each one parameter subgroup of the Mumford invariant. The manifold is Chow-Mumford stable…

cond-mat.mtrl-sci2003★ 220 cited

Amorphous-like Density of Gap States in Single Crystal Pentacene

D. V. Lang, X. Chi, T. Siegrist +2

We show that optical and electrical measurements on pentacene single crystals can be used to extract the density of states in the HOMO-LUMO bandgap. It is found that these highly p…

cond-mat.mtrl-sci2003★ 132 cited

Bias-Dependent Generation and Quenching of Defects in Pentacene

D. V. Lang, X. Chi, A. M. Sergent +1

We describe a defect in pentacene single crystals that is created by bias stress and persists at room temperature for an hour in the dark but only seconds with 420nm illumination.…

hep-ex2003★ 3 cited

Low Energy Neutrino Cross Sections: Comparison of Various Monte Carlo Predictions to Experimental Data

G. P. Zeller

Charged and neutral current low energy neutrino cross section predictions from a variety of Monte Carlo generators in present use are compared against existing experimental data. C…

cond-mat.mes-hall2003★ 48 cited

Electron Scattering in AlGaN/GaN Structures

S. Syed, M. J. Manfra, Y. J. Wang +2

We present data on mobility lifetime, , quantum lifetime, , and cyclotron resonance lifetime, , of a sequence of high-mobility two-dimensional electron gases in t…

hep-ex2003★ 11 cited

Bose-Einstein correlations in one and two dimensions in deep inelastic scattering

ZEUS Collaboration

Bose-Einstein correlations in one and two dimensions have been studied in deep inelastic EP scattering events measured with the ZEUS detector at HERA using an integrated luminosity…

hep-ex2003★ 14 cited

Isolated tau leptons in events with large missing transverse momentum at HERA

ZEUS collaboration

A search for events containing isolated tau leptons and large missing transverse momentum, not originating from the tau decay, has been performed with the ZEUS detector at the elec…

astro-ph2003★ 39 cited

The Stellar Halo in the Large Magellanic Cloud: Mass, Luminosity, and Microlensing Predictions

David R. Alves

Recently obtained kinematic data has shown that the Large Magellanic Cloud (LMC) possesses an old stellar halo. In order to further characterize the properties of this halo, parame…

astro-ph2003★ 54 cited

Isolating Geometry in Weak Lensing Measurements

Jun Zhang, Lam Hui, Albert Stebbins

Given a foreground galaxy-density field or shear field, its cross-correlation with the shear field from a background population of source galaxies scales with the source redshift i…

astro-ph2003★ 23 cited

Revealing the obscured supernova remnant Kes 32 with Chandra

Jacco Vink

I report here on the analysis and interpretation of a Chandra observation of the supernova remnant Kes 32. Kes 32 is rather weak in X-rays due to a large interstellar absorption, w…

cond-mat.mes-hall2003★ 84 cited

New type of -periodic magneto-oscillations in a two-dimensional electron system induced by microwave irradiation

I. V. Kukushkin, M. Yu. Akimov, J. H. Smet +4

We observe a new type of magneto-oscillations in the photovoltage and the longitudinal resistance of a two-dimensional electron system. The oscillations are induced by microwave ir…

astro-ph2003★ 142 cited

Flares from small to large: X-ray spectroscopy of Proxima Centauri with XMM-Newton

M. Guedel, M. Audard, F. Reale +2

(Abridged) We report results from a comprehensive study of the nearby M dwarf Proxima Centauri with the XMM-Newton satellite. We find strongly variable coronal X-ray emission, with…

astro-ph2003★ 74 cited

Modeling an X-ray Flare on Proxima Centauri: evidence of two flaring loop components and of two heating mechanisms at work

F. Reale, M. Guedel, G. Peres +1

We model in detail a flare observed on Proxima Centauri with the EPIC-PN on board XMM-Newton at high statistics and high time resolution and coverage. Time-dependent hydrodynamic l…

q-bio.NC2003★ 2 cited

Structured psychosocial stress and the US obesity epidemic

Rodrick Wallace, Deborah N. Wallace

We examine the accelerating 'obesity epidemic' in the US from the perspective of generalized language-of-thought arguments relating a cognitive hypothalamic-pituitary-adrenal axis…

math.OC2003★ 2 cited

Geometrical and Numerical Design of Structured Unitary Space Time Constellations

Guangyue Han, Joachim Rosenthal

In this paper we propose constellations with suitable structure which allow one to construct codes with excellent diversity using geometrical symmetry and numerical methods. We als…

astro-ph2003

A Search for Short Time-Scale Optical Variability in the GRB 030329 Afterglow

N. Mirabal, J. P. Halpern, M. Bureau +1

We present a densely sampled R-band light curve of the optical afterglow of GRB 030329 obtained during the period 15.5-23 hours after the burst. This dataset allows us to search fo…

astro-ph2003

GRB 021004: A Possible Shell Nebula around a Wolf-Rayet Star Gamma-Ray Burst Progenitor

N. Mirabal, J. P. Halpern, R. Chornock +2

The rapid localization of GRB 021004 by the HETE-2 satellite allowed nearly continuous monitoring of its early optical afterglow decay, as well as high-quality optical spectra that…

astro-ph2003

Was the X-ray Afterglow of GRB 970815 Detected?

N. Mirabal, J. P. Halpern, E. V. Gotthelf +1

GRB 970815 was a well-localized gamma-ray burst (GRB) detected by the All-Sky Monitor (ASM) on the Rossi X-Ray Timing Explorer (RXTE) for which no afterglow was identified despite…

astro-ph2003★ 24 cited

The H-alpha Light Curves and Spatial Distribution of Novae in M81

James D. Neill, Michael M. Shara

We present the results of a preliminary H-alpha survey of M81 for novae conducted over a 5 month interval using the 5' field of view camera (WFCAM) on the Calypso Telescope at Kitt…

astro-ph2003★ 958 cited

An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system

M. Burgay, N. D'Amico, A. Possenti +10

The merger of close binary systems containing two neutron stars should produce a burst of gravitational waves, as predicted by the theory of general relativity. A reliable estimate…

hep-th2003★ 38 cited

Two-Loop Superstrings on Orbifold Compactifications

Kenichiro Aoki, Eric D'Hoker, D. H. Phong

The two-loop chiral measure for superstring theories compactified on $\bZ_2$ reflection orbifolds is constructed from first principles for even spin structures. This is achieved by…

hep-ph2003★ 38 cited

Diffractive photon dissociation in the saturation regime from the Good and Walker picture

S. Munier, A. Shoshi

Combining the QCD dipole model with the Good and Walker picture, we formulate diffractive dissociation of a photon of virtuality Q^2 off a hadronic target, in the kinematical regim…

astro-ph2003★ 143 cited

The detailed optical light curve of GRB 030329

Y. M. Lipkin, E. O. Ofek, A. Gal-Yam +22

(Abridged) We present densely sampled BVRI light curves of the optical transient associated with the gamma-ray burst GRB 030329, the result of a coordinated observing campaign cond…