Microscopic theory of black hole superradiance
Microscopic theory of black hole superradiance
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<ω<mΩH on superradiant mode frequencies is argued to be a consequence of Fermi-Dirac statistics for the spin-carrying degrees of freedom in the dual conformal field theory. We also compute the superradiant emission rates from both sides of the correspondence, and show their agreement.
Dias, Oscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Emparan, Roberto
6f047bdb-0fdc-45eb-9c02-bfb540aa5020
Maccarrone, Alessandro
13ea3297-9a80-4403-86eb-7bc1031cee0f
15 March 2008
Dias, Oscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Emparan, Roberto
6f047bdb-0fdc-45eb-9c02-bfb540aa5020
Maccarrone, Alessandro
13ea3297-9a80-4403-86eb-7bc1031cee0f
Dias, Oscar J.C., Emparan, Roberto and Maccarrone, Alessandro
(2008)
Microscopic theory of black hole superradiance.
Phys.Rev.D, 77 (6), [064018].
(doi:10.1103/PhysRevD.77.064018).
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<ω<mΩH on superradiant mode frequencies is argued to be a consequence of Fermi-Dirac statistics for the spin-carrying degrees of freedom in the dual conformal field theory. We also compute the superradiant emission rates from both sides of the correspondence, and show their agreement.
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Published date: 15 March 2008
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©2008 American Physical Society
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Local EPrints ID: 468096
URI: http://eprints.soton.ac.uk/id/eprint/468096
PURE UUID: bc692c90-23bf-4230-a655-ea1d78287834
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Date deposited: 02 Aug 2022 17:04
Last modified: 17 Mar 2024 03:35
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Author:
Roberto Emparan
Author:
Alessandro Maccarrone
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