We have used the analogy between gravitational systems and nonhomogeneous 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.
Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes / R.Balbinot; A. Fabbri; S. Fagnocchi; A.Recati; I. Carusotto. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - STAMPA. - 78:(2008), pp. 021603-1-021603-4. [10.1103/PhysRevA.78.021603]
Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes.
BALBINOT, ROBERTO;
2008
Abstract
We have used the analogy between gravitational systems and nonhomogeneous 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
