Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes

Alessandro Fabbri; Alessio Recati; Iacopo Carusotto; Roberto Balbinot; Serena Fagnocchi

Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes

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arxiv 0711.4520 v2 pith:TSZ74DOQ submitted 2007-11-28 cond-mat.other gr-qchep-th

Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes

Roberto Balbinot , Alessandro Fabbri , Serena Fagnocchi , Alessio Recati , Iacopo Carusotto This is my paper

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keywords acousticblackcorrelationdensityanalogyatomicbose-einsteincalculate

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We have used the analogy between gravitational systems and non-homogeneous fluid flows to calculate the density-density correlation function of an atomic Bose-Einstein condensate in the presence of an acoustic black hole. The emission of correlated pairs of phonons by Hawking-like process results into a peculiar long-range density correlation. Quantitative estimations of the effect are provided for realistic experimental configurations.

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