Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-10-16
Class.Quant.Grav.26:035006,2009
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, 10 figures; added acknowledgment
Scientific paper
10.1088/0264-9381/26/3/035006
In the traditional picture of black holes Hawking radiation is created by pair creation from the vacuum at the horizon. In the fuzzball proposal, individual microstates do not have a horizon with the `vacuum' state in its vicinity. For a special family of non-extremal microstates it was recently found that emission occurs due to pair creation in an ergoregion, rather than at a horizon. In this paper we extend this result to a slightly larger class of microstates, again finding exact agreement between the emission in the gravity picture and the CFT dual. We write down an expression for emission from geometries with ergoregions, in terms of the leading falloff behavior of the wavefunctions in the fuzzball region. Finally, we describe another family of nonextremal microstates and find their ergoregion.
Chowdhury Borun D.
Mathur Samir D.
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