Four-Dimensional Entropy from Three-Dimensional Gravity
- Author(s): Carlip, S
- et al.
Published Web Locationhttps://doi.org/10.1103/PhysRevLett.115.071302
© 2015 American Physical Society. 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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