The stability of thin-shell wormholes with a phantom-like equation of state

Details The stability of thin-shell wormholes with a phantom-like equation of state The stability of thin-shell wormholes with a phantom-like equation of state

2010-08-18

arxiv.org/abs/1008.3111v3

Acta Phys.Polon.B41:2017-2019,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, 4 figures

Scientific paper

This paper discusses the stability to linearized radial perturbations of spherically symmetric thin-shell wormholes with a "phantom-like" equation of state for the exotic matter at the throat: $P=\omega\sigma$, $\omega<0$, where $\sigma$ is the energy-density of the shell and $P$ the lateral pressure. This equation is analogous to the generalized Chaplygin-gas equation of state used by E.F. Eiroa. The analysis, which differes from Eiroa's in its basic approach, is carried out for wormholes constructed from the following spacetimes: Schwarzschild, de Sitter and anti de Sitter, Reissner-Nordstrom, and regular charged black-hole spacetimes, followed by black holes in dilaton and generalized dilaton-axion gravity.

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