Hawking Radiation from Fluctuating Black Holes

Details Hawking Radiation from Fluctuating Black Holes Hawking Radiation from Fluctuating Black Holes

2010-05-03

arxiv.org/abs/1005.0286v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

35pages, 4 figures

Scientific paper

Classically, black Holes have the rigid event horizon. However, quantum mechanically, the event horizon of black holes becomes fuzzy due to quantum fluctuations. We study Hawking radiation of a real scalar field from a fluctuating black hole. To quantize metric perturbations, we derive the quadratic action for those in the black hole background. Then, we calculate the cubic interaction terms in the action for the scalar field. Using these results, we obtain the spectrum of Hawking radiation in the presence of interaction between the scalar field and the metric. It turns out that the spectrum deviates from the Planck spectrum due to quantum fluctuations of the metric.

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