Nonsingular Black Hole Evaporation and ``Stable'' Remnants

Details Nonsingular Black Hole Evaporation and ``Stable'' Remnants Nonsingular Black Hole Evaporation and ``Stable'' Remnants

1993-05-24

arxiv.org/abs/hep-th/9305125v1

Phys.Rev.D48:3735-3742,1993

Physics

High Energy Physics

High Energy Physics - Theory

23 pages, 6 figures, harvmac and epsf, RU-93-12, PUPT-1399, NSF-ITP-93-56

Scientific paper

10.1103/PhysRevD.48.3735

We examine the evaporation of two--dimensional black holes, the classical space--times of which are extended geometries, like for example the two--dimensional section of the extremal Reissner--Nordstrom black hole. We find that the evaporation in two particular models proceeds to a stable end--point. This should represent the generic behavior of a certain class of two--dimensional dilaton--gravity models. There are two distinct regimes depending on whether the back--reaction is weak or strong in a certain sense. When the back--reaction is weak, evaporation proceeds via an adiabatic evolution, whereas for strong back--reaction, the decay proceeds in a somewhat surprising manner. Although information loss is inevitable in these models at the semi--classical level, it is rather benign, in that the information is stored in another asymptotic region.

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