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Showing 2001Show all

96 papers · 1 filter

hep-th2001★ 84 cited

Branes in the Euclidean AdS_3

B. Ponsot, V. Schomerus, J. Teschner

In this work we propose an exact microscopic description of maximally symmetric branes in a Euclidean background. As shown by Bachas and Petropoulos, the most important suc…

gr-qc2001★ 97 cited

Cosmological models and centre manifold theory

Alan D. Rendall

Centre manifold theory is applied to some dynamical systems arising from spatially homogeneous cosmological models. Detailed information is obtained concerning the late-time behavi…

gr-qc2001★ 14 cited

A New Transition between Discrete and Continuous Self-Similarity in Critical Gravitational Collapse

Christiane Lechner, Jonathan Thornburg, Sascha Husa +1

We analyze a bifurcation phenomenon associated with critical gravitational collapse in a family of self-gravitating SU(2) -models. As the dimensionless coupling constant decreas…

gr-qc2001★ 1 cited

Semiglobal Numerical Calculations of Asymptotically Minkowski Spacetimes

Sascha Husa

This talk reports on recent progress toward the semiglobal study of asymptotically flat spacetimes within numerical relativity. The development of a 3D solver for asymptotically Mi…

hep-th2001★ 29 cited

Limiting Geometries of Two Circular Maldacena-Wilson Loop Operators

Gleb Arutyunov, Jan Plefka, Matthias Staudacher

We further analyze a recent perturbative two-loop calculation of the expectation value of two axi-symmetric circular Maldacena-Wilson loops in N=4 gauge theory. Firstly, it is demo…

hep-th2001★ 53 cited

D-Branes in Coset Models

Stefan Fredenhagen, Volker Schomerus

The analysis of D-branes in coset models G/H provides a natural extension of recent studies on branes in WZW-theory and it has various interesting applications to physically releva…

gr-qc2001★ 23 cited

Lighthouses of Gravitational Wave Astronomy

Bernard F. Schutz

Gravitational wave detectors capable of making astronomical observations could begin to operate within the next year, and over the next 10 years they will extend their reach out to…

quant-ph2001★ 95 cited

Mirror quiescence and high-sensitivity position measurements with feedback

David Vitali, Stefano Mancini, Luciano Ribichini +1

We present a detailed study of how phase-sensitive feedback schemes can be used to improve the performance of optomechanical devices. Considering the case of a cavity mode coupled…

gr-qc2001★ 13 cited

Performance of a 1200m long suspended Fabry-Perot cavity

A. Freise, M. M. Casey, S. Gossler +9

Using one arm of the Michelson interferometer and the power recycling mirror of the interferometric gravitational wave detector GEO600, we created a Fabry-Perot cavity with a lengt…

math-ph2001★ 11 cited

Branching rules of semi-simple Lie algebras using affine extensions

T. Quella

We present a closed formula for the branching coefficients of an embedding p in g of two finite-dimensional semi-simple Lie algebras. The formula is based on the untwisted affine e…

gr-qc2001★ 230 cited

Geometry of Generic Isolated Horizons

Abhay Ashtekar, Christopher Beetle, Jerzy Lewandowski

Geometrical structures intrinsic to non-expanding, weakly isolated and isolated horizons are analyzed and compared with structures which arise in other contexts within general rela…

gr-qc2001★ 32 cited

On the observational determination of squeezing in relic gravitational waves and primordial density perturbations

Sukanta Bose, L. P. Grishchuk

We develop a theory in which relic gravitational waves and primordial density perturbations are generated by strong variable gravitational field of the early Universe. The generati…

gr-qc2001★ 183 cited

Calculating the gravitational self force in Schwarzschild spacetime

Leor Barack, Yasushi Mino, Hiroyuki Nakano +2

We present a practical method for calculating the local gravitational self-force (often called ``radiation-reaction force'') for a pointlike particle orbiting a Schwarzschild black…

gr-qc2001★ 118 cited

Galactic Collapse of Scalar Field Dark Matter

Miguel Alcubierre, F. Siddhartha Guzman, Tonatiuh Matos +3

We present a scenario for galaxy formation based on the hypothesis of scalar field dark matter. We interpret galaxy formation through the collapse of a scalar field fluctuation. We…

hep-th2001★ 195 cited

Fivebranes Wrapped on SLAG Three-Cycles and Related Geometry

Jerome P. Gauntlett, Nakwoo Kim, Dario Martelli +1

We construct ten-dimensional supergravity solutions corresponding to the near horizon limit of IIB fivebranes wrapping special Lagrangian three-cycles of constant curvature. The ca…

gr-qc2001★ 90 cited

On the Einstein-Vlasov system with hyperbolic symmetry

Hakan Andreasson, Gerhard Rein, Alan D. Rendall

It is shown that a spacetime with collisionless matter evolving from data on a compact Cauchy surface with hyperbolic symmetry can be globally covered by compact hypersurfaces on w…

gr-qc2001★ 12 cited

Global Prescribed Mean Curvature foliations in cosmological spacetimes with matter, Part II

Oliver Henkel

This second part is devoted to the investigation of global properties of Prescribed Mean Curvature (PMC) foliations in cosmological spacetimes with local symmetr…

gr-qc2001★ 21 cited

Global Prescribed Mean Curvature foliations in cosmological spacetimes with matter, Part I

Oliver Henkel

This work investigates some global questions about cosmological spacetimes with two dimensional spherical, plane and hyperbolic symmetry containing matter. The result is, that thes…

gr-qc2001★ 202 cited

Three-dimensional general relativistic hydrodynamics II: long-term dynamics of single relativistic stars

J. Font, T. Goodale, S. Iyer +6

This is the second in a series of papers on the construction and validation of a three-dimensional code for the solution of the coupled system of the Einstein equations and of the…

gr-qc2001★ 15 cited

Computational cost for detecting inspiraling binaries using a network of laser interferometric detectors

Archana Pai, Sukanta Bose, Sanjeev Dhurandhar

We extend a coherent network data-analysis strategy developed earlier for detecting Newtonian waveforms to the case of post-Newtonian (PN) waveforms. Since the PN waveform depends…

gr-qc2001★ 456 cited

Introduction to Modern Canonical Quantum General Relativity

Thomas Thiemann

This is an introduction to the by now fifteen years old research field of canonical quantum general relativity, sometimes called "loop quantum gravity". The term "modern" in the ti…

gr-qc2001

Remarks on a solvable cosmological model

Ion I. Cotaescu, Dumitru N. Vulcanov

We present an exact analytical solution of the Einstein equations with cosmological constant in a spatially flat Robertson-Walker metric. This is interpreted as an isotropic Lemait…

gr-qc2001★ 7 cited

Progress on stochastic background search codes for LIGO

John T. Whelan, Warren G. Anderson, Martha Casquette +7

One of the types of signals for which the LIGO interferometric gravitational wave detectors will search is a stochastic background of gravitational radiation. We review the techniq…

math.DG2001★ 3 cited

Regularizing a singular special Lagrangian variety

Adrian Butscher

Suppose and are two special Lagrangian submanifolds of $\Rtn$ with boundary that intersect transversally at one point . The set is a singular…