Numerical observation of Hawking radiation from acoustic black holes in   atomic Bose-Einstein condensates
  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. 
Iacopo Carusotto, Serena Fagnocchi, Alessio Recati, Roberto Balbinot,   Alessandro Fabbri