Black holes by analytic continuation

Details Black holes by analytic continuation Black holes by analytic continuation

1996-02-22

arxiv.org/abs/hep-th/9602125v2

Phys.Rev. D56 (1997) 974-982

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, harvmac, 3 figures, minor changes

Scientific paper

10.1103/PhysRevD.56.974

In the context of a two-dimensional exactly solvable model, the dynamics of quantum black holes is obtained by analytically continuing the description of the regime where no black hole is formed. The resulting spectrum of outgoing radiation departs from the one predicted by the Hawking model in the region where the outgoing modes arise from the horizon with Planck-order frequencies. This occurs early in the evaporation process, and the resulting physical picture is unconventional. The theory predicts that black holes will only radiate out an energy of Planck mass order, stabilizing after a transitory period. The continuation from a regime without black hole formation --accessible in the 1+1 gravity theory considered-- is implicit in an S-matrix approach and suggests in this way a possible solution to the problem of information loss.

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