Quantum Signature of Analog Hawking Radiation in Momentum Space

Year: 2015

Authors: Boiron D., Fabbri A., Larre PE., Pavloff N., Westbrook CI., Zin P.

Autors Affiliation: Univ Paris Sud, CNRS, Inst Opt, Lab Charles Fabry, F-91127 Palaiseau, France; Ctr Studi & Ric E Fermi, I-00184 Rome, Italy; Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy;‎ Univ Valencia, CSIC, Dept Fis Teor, E-46100 Burjassot, Spain;‎ Univ Valencia, CSIC, IFIC, E-46100 Burjassot, Spain; Univ Paris Sud, CNRS UMR 8627, Lab Phys Theor, F-91405 Orsay, France; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy;‎ Univ Paris Sud, CNRS, Lab Phys Theor & Modeles Stat, UMR 8626, F-91405 Orsay, France;‎ Natl Ctr Nucl Res, PL-00681 Warsaw, Poland

Abstract: We consider a sonic analog of a black hole realized in the one-dimensional flow of a Bose-Einstein condensate. Our theoretical analysis demonstrates that one-and two-body momentum distributions accessible by present-day experimental techniques provide clear direct evidence (i) of the occurrence of a sonic horizon, (ii) of the associated acoustic Hawking radiation, and (iii) of the quantum nature of the Hawking process. The signature of the quantum behavior persists even at temperatures larger than the chemical potential.


Volume: 115 (2)      Pages from: 025301-1  to: 025301-5

DOI: 10.1103/PhysRevLett.115.025301

Citations: 38
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