Publication: Black Hole Superradiance From Kerr/CFT
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Date
2010
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Springer Verlag
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Citation
Bredberg, Irene, Thomas Hartman, Wei Song, and Andrew E. Strominger. 2010. Black hole superradiance from Kerr/CFT. Journal of High Energy Physics 2010(4): 19.
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Abstract
The superradiant scattering of a scalar field with frequency and angular momentum (w,m) by a near-extreme Kerr black hole with mass and spin (M, J) was derived in the seventies by Starobinsky, Churilov, Press and Teukolsky. In this paper we show that for frequencies scaled to the superradiant bound the full functional dependence on (w,m,M, J) of the scattering amplitudes is precisely reproduced by a dual twodimensional conformal field theory in which the black hole corresponds to a specific thermal state and the scalar field to a specific operator. This striking agreement corroborates a conjectured Kerr/CFT correspondence.
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Keywords
black holes, AdS-CFT correspondence, space-time symmetries, high energy astrophysical phenomena, general relativity and quantum cosmology
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