RT Journal Article
T1 Birth of a quasi-stationary black hole in an outcoupled Bose–Einstein condensate
A1 Muñoz de Nova, Juan Ramón
A1 Guéry Odelin, D.
A1 Sols Lucía, Fernando
A1 Zapata, I.
AB We study the evolution of an initially confined atom condensate, which is progressively outcoupled by gradually lowering the confining barrier on one side. The goal is to identify protocols that best lead to a quasi-stationary sonic black hole separating regions of subsonic and supersonic flow. An optical lattice is found to be more efficient than a single barrier in yielding a long-time stationary flow. This is best achieved if the final conduction band is broad and its minimum is not much lower than the initial chemical potential. An optical lattice with a realistic Gaussian envelope yields similar results. We analytically prove and numerically check that, within a spatially coarse-grained description, the sonic horizon is bound to lie right at the envelope maximum. We derive an analytical formula for the Hawking temperature in that setup.
PB IOP Publishing
SN 1367-2630
YR 2014
FD 2014-12-15
LK https://hdl.handle.net/20.500.14352/35491
UL https://hdl.handle.net/20.500.14352/35491
LA eng
NO © 2014 IOP Publishing Ltd and Deutsche Physikalische GesellschaftWe thank I Carusotto and R Parentani for valuable discussions. This work has been supported by MINECO (Spain) through grants FIS2010-21372 and FIS2013-41716-P, Comunidad de Madrid through grant MICROSERES-CM (S2009/TIC-1476), and the Institut Universitaire de France.
NO Ministerio de Economía y Competitividad (MINECO)
NO Comunidad de Madrid
NO Institut Universitaire de France
DS Docta Complutense
RD 10 abr 2025