CFT Duals for Extreme Black Holes
arXiv:0811.4393 · doi:10.1088/1126-6708/2009/04/019
Abstract
It is argued that the general four-dimensional extremal Kerr-Newman-AdS-dS black hole is holographically dual to a (chiral half of a) two-dimensional CFT, generalizing an argument given recently for the special case of extremal Kerr. Specifically, the asymptotic symmetries of the near-horizon region of the general extremal black hole are shown to be generated by a Virasoro algebra. Semiclassical formulae are derived for the central charge and temperature of the dual CFT as functions of the cosmological constant, Newton's constant and the black hole charges and spin. We then show, assuming the Cardy formula, that the microscopic entropy of the dual CFT precisely reproduces the macroscopic Bekenstein-Hawking area law. This CFT description becomes singular in the extreme Reissner-Nordstrom limit where the black hole has no spin. At this point a second dual CFT description is proposed in which the global part of the U(1) gauge symmetry is promoted to a Virasoro algebra. This second description is also found to reproduce the area law. Various further generalizations including higher dimensions are discussed.
18 pages; v2 minor changes
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- Kerr/CFT Correspondence in the Low Energy Limit of Heterotic String Theory
- Extremal Kerr black hole/CFT correspondence in the five dimensional Gödel universe
- Uniqueness of near-horizon geometries of rotating extremal AdS(4) black holes
- Emerging AdS from Extremally Rotating NS5-branes
- Extremal Isolated Horizon/CFT Correspondence
- Holographic RG flow dual to attractor flow in extremal black holes
- Conformal Symmetry for Rotating D-branes
- Holographic descriptions of (near-)extremal black holes in five dimensional minimal supergravity