PT Journal
AU Fabbri, A
   Balbinot, R
TI Ramp-up of Hawking Radiation in Bose-Einstein-Condensate Analog Black Holes
SO Physical Review Letters
JI Phys. Rev. Lett.
PY 2021
BP 111301
EP 6pp
VL 126
IS 11
DI 10.1103/PhysRevLett.126.111301
LA English
AB 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 T = 0 and even in the presence of an initial temperature T, as is always the case experimentally.
ER