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Extremal and nonextremal Kerr/CFT correspondences

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Abstract

I rederive the Kerr/CFT correspondence without first taking the near-horizon extremal Kerr limit. This method extends easily to nonextremal black holes, for which the temperature and central charge behave poorly at the horizon but the entropy remains finite. A computation yields one-half of the standard Bekenstein-Hawking entropy, with hints that the other half may be related to a conformal field theory at the inner horizon. I then present an alternative approach, based on a stretched Killing horizon, in which the full entropy is obtained and the temperature and central charge remain well-behaved even in the nonextremal case.

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  1. Department of Physics, University of California, Davis, CA, 95616, U.S.A.

    S. Carlip

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ArXiv ePrint: 1101.5136

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Carlip, S. Extremal and nonextremal Kerr/CFT correspondences. J. High Energ. Phys. 2011, 76 (2011). https://doi.org/10.1007/JHEP04(2011)076

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