Departing from thermality of analogue Hawking radiation in a Bose-Einstein condensate

M. Isoard; N. Pavloff

Departing from thermality of analogue Hawking radiation in a Bose-Einstein condensate

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arxiv 1909.02509 v2 pith:ENFAJ2TU submitted 2019-09-05 cond-mat.quant-gas gr-qc

M. Isoard , N. Pavloff This is my paper · ORCID

classification cond-mat.quant-gasgr-qc

keywords analogousbose-einsteincondensatehawkingradiationthermalityaccountaccurately

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We study the quantum fluctuations in a one dimensional Bose-Einstein condensate realizing an analogous acoustic black hole. The taking into account of evanescent channels and of zero modes makes it possible to accurately reproduce recent experimental measurements of the density correlation function. We discuss the determination of Hawking temperature and show that in our model the analogous radiation presents some significant departure from thermality.

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