Numerical observation of Hawking radiation from acoustic black holes in atomic Bose-Einstein condensates

Year: 2008

Authors: Carusotto I., Fagnocchi S., Recati A., Balbinot R., Fabbri A.

Autors Affiliation: CNR-INFM BEC Center and Dipartimento di Fisica, Università di Trento, via Sommarive 14, I-38050 Povo, Trento, Italy;
Centro Studi e Ricerche ‘Enrico Fermi’, Compendio Viminale, 00184 Roma, Italy
Dipartimento di Fisica dell’Università di Bologna and INFN sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy;
Departamento de Fisica Teorica and IFIC, Universidad de Valencia-CSIC, C. Dr Moliner 50, 46100 Burjassot, Spain

Abstract: We report numerical evidence of Hawking emission of Bogoliubov phonons from a sonic horizon in a flowing one-dimensional atomic Bose-Einstein condensate. The presence of Hawking radiation is revealed from peculiar long-range patterns in the density-density correlation function of the gas. Quantitative agreement between our fully microscopic calculations and the prediction of analog models is obtained in the hydrodynamic limit. New features are predicted and the robustness of the Hawking signal against a finite temperature discussed.


Volume: 10      Pages from: 103001  to: 103001

More Information: We are indebted to Y Castin, C Ciuti, R Floreanini, C Lobo, Z Gaburro, N Pavloff, R Parentani, M Rinaldi and W Unruh for stimulating discussions. IC and AR acknowledge support from the Italian MIUR and the EuroQUAM-FerMix program. IC acknowledges support from the French CNRS. SF acknowledges support from E Fermi center. AF acknowledges the Spanish MEC.
DOI: 10.1088/1367-2630/10/10/103001

Citations: 215
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