Trace anomaly and Hawking effect in generic 2D dilaton gravity theories

Details Trace anomaly and Hawking effect in generic 2D dilaton gravity theories Trace anomaly and Hawking effect in generic 2D dilaton gravity theories

1995-10-09

arxiv.org/abs/gr-qc/9510012v1

Phys.Rev.D53:4413-4420,1996

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

14 pages, Plain-Tex, 4 figures in a uuencoded-gzipcompressed ps file

Scientific paper

10.1103/PhysRevD.53.4413

Black hole solutions in the context of a generic matter-coupled two-dimensional dilaton gravity theory are discussed both at the classical and semiclassical level. Starting from general assumptions, a criterion for the existence of black holes is given. The relationship between conformal anomaly and Hawking radiation is extended to a broad class of two-dimensional dilaton gravity models. A general and simple formula relating the magnitude of the Hawking effect to the dilaton potential evaluated on the horizon is derived.

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