Quantum toy model for black-hole back-reaction

Details Quantum toy model for black-hole back-reaction Quantum toy model for black-hole back-reaction

2007-06-27

arxiv.org/abs/0706.4010v1

Phys.Rev.D76:101502,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages

Scientific paper

10.1103/PhysRevD.76.101502

We propose a simple quantum field theoretical toy model for black hole evaporation and study the back-reaction of Hawking radiation onto the classical background. It turns out that the horizon is also ``pushed back'' in this situation (i.e., the interior region shrinks) but this back-reaction is not caused by energy conservation but by momentum balance. The effective heat capacity and the induced entropy variation can have both signs -- depending on the parameters of the model. PACS: 04.62.+v, 04.70.Dy.

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