Departing from Thermality of Analogue Hawking Radiation in a Bose-Einstein Condensate

M. Isoard and N. Pavloff
Phys. Rev. Lett. 124, 060401 – Published 10 February 2020
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Abstract

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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  • Received 5 September 2019
  • Accepted 9 January 2020

DOI:https://doi.org/10.1103/PhysRevLett.124.060401

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalGeneral PhysicsGravitation, Cosmology & Astrophysics

Authors & Affiliations

M. Isoard and N. Pavloff

  • Université Paris-Saclay, CNRS, LPTMS, 91405 Orsay

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Vol. 124, Iss. 6 — 14 February 2020

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