Hawking Radiation in the Ghost Condensate is Non-Thermal
arXiv:0807.0253 · doi:10.1103/PhysRevD.78.064061
Abstract
We consider a Schwarzschild black hole immersed in a ghost condensate background. It is shown that the Hawking radiation in the quanta of small perturbations around this background is highly suppressed- in particular it is not given by a thermal spectrum. This result is in accord with observations that such black holes can be used to violate the generalized second law of thermodynamics, and thus cannot have a standard entropy/area relation.
26 pages; v2: reference added, missing Christoffel symbols included in appendix, minor typos corrected in equations (39) and (50)