Gravitational Instanton for Black Hole Radiation

Details Gravitational Instanton for Black Hole Radiation Gravitational Instanton for Black Hole Radiation

1997-01-10

arxiv.org/abs/gr-qc/9701015v1

Phys.Rev.Lett. 78 (1997) 3810-3813

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, latex

Scientific paper

10.1103/PhysRevLett.78.3810

Hawking radiation is derived from the existence of a euclidean instanton which lives in the euclidean black hole geometry. Upon taking into account the gravitational field of the instanton itself, its action is exactly equal to one quarter the change in the horizon area. This result also applies to the Schwinger process, the Unruh process, and particle creation in deSitter space. The implications for horizon thermodynamics are discussed.

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