3 papers
hep-th2005
Gravitational field of relativistic gyratons
Valeri P. Frolov, Werner Israel, Andrei Zelnikov
The metric ansatz is used to describe the gravitational field of a beam-pulse of spinning radiation (gyraton) in an arbitrary number of spacetime dimensions D. First we demonstrate…
gr-qc2005
Dark energy, wormholes, and the Big Rip
Valerio Faraoni, Werner Israel
The time evolution of a wormhole in a Friedmann universe approaching the Big Rip is studied. The wormhole is modeled by a thin spherical shell accreting the superquintessence fluid…
gr-qc2005
Lagrangian Brane Dynamics in General Relativity and Einstein-Gauss-Bonnet Gravity
Claude Barrabes, Werner Israel
This paper gives a new, simple and concise derivation of brane actions and brane dynamics in general relativity and in Einstein-Gauss-Bonnet gravity. We present a unified treatment…