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Non-extremal fuzzballs and ergoregion emission
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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.
Forward citations
Cited by 3 Pith papers
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Berry Picking: Random Wave Chaos Hierarchy for BPS Microstate Geometries
Wave chaos in BPS microstate geometries strengthens toward black-hole-like throats while geodesic chaos weakens, and weak-coupling CFT Renyi entropies do not share that bulk hierarchy.
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Cogito, ergo - strings: Supersymmetric ergoregions and their stringy excitations
Supersymmetric ergoregions without horizons in NS5-F1-P bound states are shown to admit negative-energy BPS excitations, described via gauged WZW models and mapped holographically to the dual CFT.
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Quasinormal modes of supersymmetric microstate geometries from the D1-D5 CFT
In the near-decoupling limit, the scalar quasinormal mode spectrum of GMS microstate geometries is reproduced exactly by D1-D5 orbifold CFT emission amplitudes, including the slow-decaying ERS modes.
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