Hawking temperature in the tunneling picture

Details Hawking temperature in the tunneling picture Hawking temperature in the tunneling picture

2006-08-15

arxiv.org/abs/hep-th/0608098v2

Phys.Lett.B642:124-128,2006

Physics

High Energy Physics

High Energy Physics - Theory

7 pages revtex, no figures, added discussions/clarifications, added references, to be published PLB

Scientific paper

10.1016/j.physletb.2006.09.028

We examine Hawking radiation from a Schwarzschild black hole in several reference frames using the quasi-classical tunneling picture. It is shown that when one uses, $\Gamma \propto \exp(Im [\oint p dr])$, rather than, $\Gamma \propto \exp(2 Im [\int p dr])$, for the tunneling probability/decay rate one obtains twice the original Hawking temperature. The former expression for $\Gamma$ is argued to be correct since $\oint p dr$ is invariant under canonical transformations, while $\int p dr$ is not. Thus, either the tunneling methods of calculating Hawking radiation are suspect or the Hawking temperature is twice that originally calculated.

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