Generic thin-shell gravastars

Details Generic thin-shell gravastars Generic thin-shell gravastars

2011-12-22

arxiv.org/abs/1112.5253v2

JCAP 03 (2012) 034

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

V1: 39 pages, 9 figures; V2: 40 pages, 9 figures. References added, some discussion added, some typos fixed. Identical to publ

Scientific paper

10.1088/1475-7516/2012/03/034

We construct generic spherically symmetric thin-shell gravastars by using the cut-and-paste procedure. We take considerable effort to make the analysis as general and unified as practicable; investigating both the internal physics of the transition layer and its interaction with "external forces" arising due to interactions between the transition layer and the bulk spacetime. Furthermore, we discuss both the dynamic and static situations. In particular, we consider "bounded excursion" dynamical configurations, and probe the stability of static configurations. For gravastars there is always a particularly compelling configuration in which the surface energy density is zero, while surface tension is nonzero.

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