Matt Visser and David L Wiltshire 2004 Class. Quantum Grav. 21 1135 doi:10.1088/0264-9381/21/4/027
Matt Visser1 and David L Wiltshire2
Show affiliationsThe 'gravastar' picture developed by Mazur and Mottola is one of a very small number of serious challenges to our usual conception of a 'black hole'. In the gravastar picture there is effectively a phase transition at/near where the event horizon would have been expected to form, and the interior of what would have been the black hole is replaced by a segment of de Sitter space. While Mazur and Mottola were able to argue for the thermodynamic stability of their configuration, the question of dynamic stability against spherically symmetric perturbations of the matter or gravity fields remains somewhat obscure. In this paper we construct a model that shares the key features of the Mazur–Mottola scenario, and which is sufficiently simple for a full dynamical analysis. We find that there are some physically reasonable equations of state for the transition layer that lead to stability.
04.70.Bw Classical black holes
04.40.Dg Relativistic stars: structure, stability, and oscillations
95.30.Tg Thermodynamic processes, conduction, convection, equations of state
83C40 Gravitational energy and conservation laws; groups of motions
Issue 4 (21 February 2004)
Received 31 October 2003
Published 22 January 2004
Matt Visser and David L Wiltshire 2004 Class. Quantum Grav. 21 1135
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