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.
6 pages, 5 figures; final version
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