Covariant anomaly and Hawking radiation from the modified black hole in the rainbow gravity theory

Details Covariant anomaly and Hawking radiation from the modified black hole in the rainbow gravity theory Covariant anomaly and Hawking radiation from the modified black hole in the rainbow gravity theory

2007-09-03

arxiv.org/abs/0709.0167v1

Gen.Rel.Grav.40:2619-2626,2008

Physics

High Energy Physics

High Energy Physics - Theory

5 pages

Scientific paper

10.1007/s10714-008-0642-4

Recently, Banerjee and Kulkarni (R. Banerjee, S. Kulkarni, arXiv:0707.2449 [hep-th]) suggested that it is conceptually clean and economical to use only the covariant anomaly to derive Hawking radiation from a black hole. Based upon this simplified formalism, we apply the covariant anomaly cancellation method to investigate Hawking radiation from a modified Schwarzschild black hole in the theory of rainbow gravity. Hawking temperature of the gravity's rainbow black hole is derived from the energy-momentum flux by requiring it to cancel the covariant gravitational anomaly at the horizon. We stress that this temperature is exactly the same as that calculated by the method of cancelling the consistent anomaly.

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