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.
I. Carusotto, S. Fagnocchi, A. Recati, R.Balbinot, A.Fabbri (2008). Numerical observation of Hawking radiation from acoustic black holes in atomic BECs. NEW JOURNAL OF PHYSICS, 10, 103001-103015 [10.1088/1367-2630/10/10/103001].
Numerical observation of Hawking radiation from acoustic black holes in atomic BECs.
BALBINOT, ROBERTO;
2008
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
