Covariant Anomalies, Horizons and Hawking Radiation

Details Covariant Anomalies, Horizons and Hawking Radiation Covariant Anomalies, Horizons and Hawking Radiation

2008-07-29

arxiv.org/abs/0807.4637v1

Int.J.Mod.Phys.D17:2539-2542,2009

Physics

High Energy Physics

High Energy Physics - Theory

5 pages; This essay was awarded an Honorable Mention in the 2008 Gravity Research Foundation essay competition

Scientific paper

10.1142/S0218271808014175

Hawking radiation is obtained from anomalies resulting from a breaking of diffeomorphism symmetry near the event horizon of a black hole. Such anomalies, manifested as a nonconservation of the energy momentum tensor, occur in two different forms -- covariant and consistent. The crucial role of covariant anomalies near the horizon is revealed since this is the {\it only} input required to obtain the Hawking flux, thereby highlighting the universality of this effect. A brief description to apply this method to obtain thermodynamic entities like entropy or temperature is provided.

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