Can conformal Transformations change the fate of 2D black holes?

Details Can conformal Transformations change the fate of 2D black holes? Can conformal Transformations change the fate of 2D black holes?

1998-11-30

arxiv.org/abs/hep-th/9811246v2

Phys.Lett. B449 (1999) 30-38

Physics

High Energy Physics

High Energy Physics - Theory

Some typos corrected. A few comments and two references added. Accepted for publication in PLB. Latex, 11 pages, no figures

Scientific paper

10.1016/S0370-2693(99)00081-7

By using a classical Liouville-type model of two dimensional dilaton gravity we show that the one-loop theory implies that the fate of a black hole depends on the conformal frame. There is one frame for which the evaporation process never stops and another one leading to a complete disappearance of the black hole. This can be seen as a consequence of the fact that thermodynamic variables are not conformally invariant. In the second case the evaporation always produces the same static and regular end-point geometry, irrespective of the initial state.

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