Black Hole Entropy from Horizon Conformal Field Theory

Abstract

String theory and ``quantum geometry'' have recently offered independent statistical mechanical explanations of black hole thermodynamics. But these successes raise a new problem: why should models with such different microscopic degrees of freedom yield identical results? I propose that the asymptotic behavior of the density of states at a black hole horizon may be determined by an underlying symmetry inherited from classical general relativity, independent of the details of quantum gravity. I offer evidence that a two-dimensional conformal symmetry at the horizon, with a classical central extension, may provide the needed behavior.

8 pages, LaTeX; talk given at QG99,``Constrained Dynamics and Quantum Gravity,'' Villasimius, Sept. 1999

References in corpus (5)

• Black Hole Entropy from Conformal Field Theory in Any Dimension
• Entropy from Conformal Field Theory at Killing Horizons
• Conformal description of horizon's states
• Isolated Horizons: A Generalization of Black Hole Mechanics
• Near-Horizon Virasoro Symmetry and the Entropy of de Sitter Space in Any Dimension

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