Microscopic Theory of Black Hole Superradiance

Abstract

We study how black hole superradiance appears in string microscopic models of rotating black holes. In order to disentangle superradiance from finite-temperature effects, we consider an extremal, rotating D1-D5-P black hole that has an ergosphere and is not supersymmetric. We explain how the microscopic dual accounts for the superradiant ergosphere of this black hole. The bound 0< omega < m Omega_H on superradiant mode frequencies is argued to be a consequence of Fermi-Dirac statistics for the spin-carrying degrees of freedom in the dual CFT. We also compute the superradiant emission rates from both sides of the correspondence, and show their agreement.

33 pages, 1 figure. v2: minor corrections

References in corpus (7)

• Microstates of a Neutral Black Hole in M Theory
• Radiation from the non-extremal fuzzball
• Statistical Description of Rotating Kaluza-Klein Black Holes
• Superradiant instability of large radius doubly spinning black rings
• Counting the Microstates of a Kerr Black Hole
• On the gravitational stability of D1-D5-P black holes
• Fundamental Plasmid Strings and Black Rings

Cited by in corpus (14)

• Bicycling Black Rings
• Greybody Factors and Charges in Kerr/CFT
• Ultraspinning instability of rotating black holes
• The Kerr/CFT Correspondence and String Theory
• Superradiant Instability of Five-Dimensional Rotating Charged AdS Black Holes
• Pair creation in non-extremal fuzzball geometries
• Hidden Conformal Symmetry of Kerr-Bolt Spacetimes
• Holographic description of Kerr-Bolt-AdS-dS Spacetimes
• New Near Horizon Limit in Kerr/CFT
• Intertwining Relations for the Deformed D1D5 CFT
• Acceleration radiation and the Planck scale
• Exact Microscopic Entropy of Non-Supersymmetric Extremal Black Rings
• On Universality of Ergoregion Mergers
• Extreme charged black holes in braneworld with cosmological constant