Bonn 2001 – wissenschaftliches Programm

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GR: Gravitation und Relativitätstheorie

GR 5: Quantenfeldtheorie in gekrümmten Raumzeiten

GR 5.1: Fachvortrag

Dienstag, 27. März 2001, 12:00–12:15, VII

On the Hawking effect — •Ralf Schützhold — Institut für theoretische Physik, Technische Universität Dresden, 01062 Dresden

In terms of the Painlevé-Gullstrand-Lemaître coordinates a rather general scenario for the gravitational collapse of a star and the subsequent formation of a horizon is described by a manifestly C^∞-metric. For a 1+1 dimensional model scenario the leading contributions to the Bogoliubov coefficients are calculated explicitly and the Hawking temperature is recovered. But depending on the particular dynamics of the collapse the final state represents either evaporation or anti-evaporation. The generalization of the calculation to 3+1 dimensions is outlined and possible implications are addressed.
Supported by BMBF, DFG, and GSI.
PACS-numbers: 04.70.Dy, 04.70.-s, 04.62.+v.
e-preprint: gr-qc/0011047.