The string spectrum on the horizon of a non-extremal black hole

Abstract

We investigate the conformal string $\sigma$-model corresponding to a general five-dimensional non-extremal black hole solution. In the horizon region the theory reduces to an exactly solvable conformal field theory. We determine the modular invariant spectrum of physical string states, which expresses the Rindler momentum operator in terms of three charges and string oscillators. For black holes with winding and Kaluza-Klein charges, we find that states made with only right-moving excitations have ADM mass equal to the black hole ADM mass, and thus they can be used as sources of the gravitational field. A discussion on statistical entropy is included.

17 pages, harvmac (minor corrections)

References in corpus (8)

• Microscopic Origin of the Bekenstein-Hawking Entropy
• General Rotating Five Dimensional Black Holes of Toroidally Compactified Heterotic String
• Solitonic Strings and BPS Saturated Dyonic Black Holes
• Nonextremal Black Hole Microstates and U-duality
• Strings as Solitons & Black Holes as Strings
• Extreme dyonic black holes in string theory
• Internal Structure of Black Holes
• Extremal black hole entropy from conformal string sigma model

Cited by in corpus (2)

• Propagation of Scalars in Non-extremal Black Hole and Black p-brane Geometries
• Sigma model of near-extreme rotating black holes and their microstates