Hawking radiation in GHS blackhole, Effective action and Covariant Boundary condition

Abstract

We exploit the expression for the anomalous (chiral) effective action to obtain the Hawking radiation from the GHS (stringy) blackhole falling in the class of the most general spherically symmetric blackholes $(\sqrt{-g}\ne 1)$, using only covariant boundary condition at the event horizon. The connection between the anomalous and the normal energy-momentum tensors is also established from the effective action approach.

5 pages Latex file, minor modifications, some additional material added

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• Thermodynamics and Hawking radiation of five-dimensional rotating charged Gödel black holes
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• Near horizon approximation and beyond for a two-level atom falling into a Kerr-Newman black hole
• Anomalies and Hawking fluxes from the black holes of topologically massive gravity
• Higher Derivative Correction to the Hawking Flux via Trace Anomaly
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