Classical stability of black hole Cauchy horizons in two-dimensional asymptotically flat space-times

Details Classical stability of black hole Cauchy horizons in two-dimensional asymptotically flat space-times Classical stability of black hole Cauchy horizons in two-dimensional asymptotically flat space-times

1996-07-04

arxiv.org/abs/gr-qc/9607013v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

19 pages, harvmac, 4 figures

Scientific paper

In this paper we analyse the stability of black hole Cauchy horizons arising in a class of 2d dilaton gravity models. It is shown that due to the characteristic asymptotic Rindler form of the metric of these models, time dependent gravitational perturbations generated in the external region do not necessarily blow-up when propagated along the Cauchy horizon. There exists, in fact, a region of nonzero measure in the space of the parameters characterizing the solutions such that both instability and mass inflation are avoided. This is a new result concerning asymptotically flat space-times, not shared by the well-known solutions of General Relativity. Despite this fact, however, quantum back-reaction seems to produce a scalar curvature singularity there.

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