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Entropy 2011, 13(7), 1355-1379; doi:10.3390/e13071355
Article

Effective Conformal Descriptions of Black Hole Entropy

Received: 1 July 2011 / Revised: 12 July 2011 / Accepted: 19 July 2011 / Published: 20 July 2011
(This article belongs to the Special Issue Black Hole Thermodynamics)
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Abstract

It is no longer considered surprising that black holes have temperatures and entropies. What remains surprising, though, is the universality of these thermodynamic properties: their exceptionally simple and general form, and the fact that they can be derived from many very different descriptions of the underlying microscopic degrees of freedom. I review the proposal that this universality arises from an approximate conformal symmetry, which permits an effective “conformal dual” description that is largely independent of the microscopic details.
Keywords: black holes; Bekenstein–Hawking entropy; conformal dual black holes; Bekenstein–Hawking entropy; conformal dual
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Carlip, S. Effective Conformal Descriptions of Black Hole Entropy. Entropy 2011, 13, 1355-1379.

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