Radiation from the non-extremal fuzzball
By Borun D. Chowdhury, Samir D. Mathur. 2007
137 citations recorded by the source corpus.
The fuzzball proposal says that the information of the black hole state is distributed throughout the interior of the horizon in a ‘quantum fuzz’. There are special microstates where in the dual CFT we have ‘many excitations in the same state’; these are described by regular classical geometries without horizons. Jejjala et al (2005 Phys. Rev. D 71 124030) constructed non-extremal regular geometries of this type. Cardoso et al (2006 Phys. Rev. D 73 064031, 2007 Phys. Rev. D 76 105015) then found that these geometries had a classical instability. In this paper, we show that the energy radiated through the unstable modes is exactly the Hawking radiation for these microstates. We do this by (i) starting with the semiclassical Hawking radiation rate, (ii) using it to find the emission vertex in the CFT, (iii) replacing the Boltzman distributions of the generic CFT state with the ones describing the microstate of interest, (iv) observing that the emission now reproduces the classical instability. Because the CFT has ‘many excitations in the same state’ we get the physics of a Bose–Einstein condensate rather than a thermal gas, and the usually slow Hawking emission increases, by Bose enhancement, to a classically radiated field. This system therefore provides a complete gravity description of information-carrying radiation from a special microstate of the non-extremal hole.
Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/94fca84405d1d182d6da960ae46e12288b516ffc
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In Astronomy and Astrophysics
- Marika Taylor
- Paolo Pani
- V. Cardoso
- R. Brito
- Kostas Skenderis
- David Turton
- V. Hubeny
- Samir D. Mathur
In Atomic and Molecular Physics, and Optics
- Marika Taylor
- Paolo Pani
- Kostas Skenderis
- R. Brito
- V. Cardoso
- Samir D. Mathur
- David Turton
- K. Narayan
In Nuclear and High Energy Physics
- Marika Taylor
- Paolo Pani
- R. Brito
- V. Cardoso
- Kostas Skenderis
- David Turton
- V. Hubeny
- Samir D. Mathur
Citations in the corpus
- Numerical methods for finding stationary gravitational solutions (2015, unknown): “See [418, 469–473] for applications.”
- The fuzzball proposal for black holes (2008, background): “However, the known non-extremal fuzzball solutions decay much faster; there is no contradication, as the decay rate matches that of the corresponding CFT states, see [118, 119], but these atypical fuzzballs are not representative.”
- Superradiance (2015, background): “urprisingly, for the few microstates known explicitly { which rotate and possess an ergoregion { it was shown that the Hawking radiation rate can be exactly reproduced from the ergoregion instability [394,395] (because these eective geometries have no horizon, spin will in general give rise to an er”
- Superradiance: Energy Extraction, Black-Hole Bombs and Implications for Astrophysics and Particle Physics (2015, background): “For horizonless geometries, ergoregion instabilities lead precisely to Hawking radiation [93, 94].”
- Comments on black holes I: the possibility of complementarity (2012, background): “For simple microstates this radiation has been explicitly computed, and it arises from ‘ergoregion emission’ [50–54] near the boundary.”
- Tests for the existence of black holes through gravitational wave echoes (2017, background): “Phenomena such as Hawking radiation can be recovered, in some instances, from classical instabilities [20].”