Journal
PHYSICAL REVIEW D
Volume 94, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.94.064003
Keywords
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Funding
- NSF [PHY-1506027]
- CNPq (Brazil) [308556/2014-3]
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We show that the horizon instability of the extremal Kerr black hole is associated with a singular branch point in the Green function at the superradiant bound frequency. We study generic initial data supported away from the horizon and find an enhanced growth rate due to nonaxisymmetric modes. The growth is controlled by the conformal weight h of each mode. We speculate on connections to near-extremal black holes and holographic duality.
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