Ramp-up of Hawking radiation in Bose-Einstein condensate analogue black holes
arXiv:2005.04443 · doi:10.1103/PhysRevLett.126.111301
Abstract
Inspired by a recent experiment by Steinhauer and co-workers, we present a simple model which describes the formation of an acoustic black hole in a Bose-Einstein condensate, allowing an analytical computation of the evolution in time of the corresponding density-density correlator. We show the emergence of analog Hawking radiation out of a "quantum atmosphere" region significantly displaced from the horizon. This is quantitatively studied both at and even in the presence of an initial temperature T, as is always the case experimentally.
arXiv comment6 pages, 5 figures; final version
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