Microscopic theory of black hole superradiance
Dec, 2007
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Abstract: (arXiv)
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.- 04.70.Dy
- 11.25.Uv
- string model
- membrane model: D-brane
- membrane model: p-brane
- p-brane: 1
- p-brane: 5
- finite temperature
- black hole
- radiation
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