Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1999-11-10
Phys.Rev. D62 (2000) 064027
Physics
High Energy Physics
High Energy Physics - Theory
21 pages, LaTeX; v2: added discussion for section 3.3
Scientific paper
10.1103/PhysRevD.62.064027
We propose that Strominger's method to derive the BTZ black hole entropy is in fact applicable to other asymptotically AdS_3 black holes and gives the correct functional form of entropies. We discuss various solutions in the Einstein-Maxwell theory, dilaton gravity, Einstein-scalar theories, and Einstein-Maxwell-dilaton theory. In some cases, solutions approach AdS_3 asymptotically, but their entropies do not have the form of Cardy's formula. However, it turns out that they are actually not "asymptotically $AdS_3$" solutions. On the other hand, for truly asymptotically AdS_3 solutions, their entropies have the form of Cardy's formula. In this sense, all known solutions are consistent with our proposal.
Natsuume Makoto
Okamura Takashi
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