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arXiv · 1503.02981

Four-Dimensional Entropy from Three-Dimensional Gravity

S. Carlip
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Abstract

At the horizon of a black hole, the action of (3+1)-dimensional loop quantum gravity acquires a boundary term that is formally identical to an action for three-dimensional gravity. I show how to use this correspondence to obtain the entropy of the (3+1)-dimensional black hole from well-understood conformal field theory computations of the entropy in (2+1)-dimensional de Sitter space.

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S. Carlip. 2015-03-10. Four-Dimensional Entropy from Three-Dimensional Gravity. https://doi.org/10.1103/physrevlett.115.071302

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