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Hawking radiation from covariant anomalies in (2+1)-dimensional black holes

Soonkeon Nam1,2 and Jong-Dae Park3

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In an insightful approach, Robinson and Wilczek proposed that Hawking radiation can be obtained as the compensation of a breakdown of general covariance and gauge invariance and the radiation is a black body radiation at Hawking temperature. We apply this method to two types of black holes in three-dimensional spacetime, both of which have the form of a metric such that the tt component of the metric is not inverse of the rr component of the metric. The first one is the warped AdS3 black hole in three-dimensional topologically massive gravity with the negative cosmological constant, and the second one is the charged rotating black hole in three dimensions.


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PACS

04.70.Dy Quantum aspects of black holes, evaporation, thermodynamics

98.80.Es Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc)

04.60.-m Quantum gravity

95.30.Sf Relativity and gravitation

97.60.Lf Black holes

MSC

83C57 Black holes

81T13 Yang-Mills and other gauge theories (See also 53C07, 58E15)

83C05 Einstein's equations (general structure, canonical formalism, Cauchy problems)

83F05 Cosmology

85A40 Cosmology (For relativistic cosmology, see 83F05)

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 14 (21 July 2009)

Received 5 February 2009, in final form 3 June 2009

Published 2 July 2009



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