Microscopic theory of black hole superradiance

被引:50
作者
Dias, Oscar J. C. [1 ]
Emparan, Roberto [1 ,2 ]
Maccarrone, Alessandro [1 ]
机构
[1] Univ Barcelona, Dept Fis Fonamental, E-08028 Barcelona, Spain
[2] ICREA, Barcelona 08010, Spain
来源
PHYSICAL REVIEW D | 2008年 / 77卷 / 06期
关键词
D O I
10.1103/PhysRevD.77.064018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 conformal field theory. We also compute the superradiant emission rates from both sides of the correspondence, and show their agreement.
引用
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页数:19
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