Gravitational anomalies: a recipe for Hawking radiation

Details Gravitational anomalies: a recipe for Hawking radiation Gravitational anomalies: a recipe for Hawking radiation

2007-05-16

arxiv.org/abs/0705.2233v3

Int.J.Mod.Phys.D17:533-539,2008

Physics

High Energy Physics

High Energy Physics - Theory

7 pages; This essay received an "Honorable Mention" in the 2007 Essay Competition of the Gravity Research Foundation; (v2) Sho

Scientific paper

10.1142/S0218271808012218

We explore the method of Robinson and Wilczek for deriving the Hawking temperature of a black hole. In this method, the Hawking radiation restores general covariance in an effective theory of near-horizon physics which otherwise exhibits a gravitational anomaly at the quantum level. The method has been shown to work for broad classes of black holes in arbitrary spacetime dimensions. These include static black holes, accreting or evaporating black holes, charged black holes, rotating black holes, and even black rings. In the case of charged and rotating black holes, the expected super-radiant current is also reproduced.

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