Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-03-04
NewJ.Phys.10:103001,2008
Physics
Condensed Matter
Other Condensed Matter
Version 2 with enlarged text and several new figures
Scientific paper
10.1088/1367-2630/10/10/103001
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.
Balbinot Roberto
Carusotto Iacopo
Fabbri Alessandro
Fagnocchi Serena
Recati Alessio
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