output
19932026
most citedMeasurements of Omega and Lambda from 42 High-Redshift Supernovae

18.1k citations

Showing 2001 · gr-qcShow all

8 papers · 2 filters

gr-qc2001★ 69 cited

Warp Drive With Zero Expansion

Jose Natario

It is commonly believed that Alcubierre's warp drive works by contracting space in front of the warp bubble and expanding space behind it. We show that this expansion/contraction i…

gr-qc2001★ 96 cited

Quasi-normal modes of toroidal, cylindrical and planar black holes in anti-de Sitter spacetimes: scalar, electromagnetic and gravitational perturbations

Vitor Cardoso, Jose' P. S. Lemos

We study the quasi-normal modes (QNM) of scalar, electromagnetic and gravitational perturbations of black holes in general relativity whose horizons have toroidal, cylindrical or p…

gr-qc2001

Pair creation of particles and black holes in external fields

Oscar J. C. Dias

It is well known that massive black holes may form through the gravitational collapse of a massive astrophysical body. Less known is the fact that a black hole can be produced by t…

gr-qc2001★ 366 cited

Quasi-Normal Modes of Schwarzschild Anti-De Sitter Black Holes: Electromagnetic and Gravitational Perturbations

Vitor Cardoso, Jose' P. S. Lemos

We study the quasi-normal modes (QNM) of electromagnetic and gravitational perturbations of a Schwarzschild black hole in an asymptotically Anti-de Sitter (AdS) spacetime. Some of…

gr-qc2001★ 1 cited

Interaction between gravitational waves and domain walls

Luis Bento, Jose P. S. Lemos

We study the gravitational perturbations of thick domain walls. The refraction index and spin properties of the solutions interior to the wall are analyzed in detail. It is shown t…

gr-qc2001★ 18 cited

Quantum Field Theory of Spin Networks

A. Mikovic

We study the transition amplitudes in state-sum models of quantum gravity in D=2,3,4 spacetime dimensions by using the field theory over a Lie group formulation. By promoting the g…

gr-qc2001★ 18 cited

Singular Behaviour of electric and magnetic fields in dielectric media in a non-linear gravitational wave background

Alexander B. Balakin, Jose' P. S. Lemos

Evolution of electric and magnetic fields in dielectric media, driven by the influence of a strong gravitational wave, is considered for four exactly integrable models. It is shown…

gr-qc2001★ 373 cited

Scalar, electromagnetic and Weyl perturbations of BTZ black holes: quasi normal modes

Vitor Cardoso, Jose' P. S. Lemos

We calculate the quasinormal modes and associated frequencies of the Banados, Zanelli and Teitelboim (BTZ) non-rotating black hole. This black hole lives in 2+1-dimensions in an as…