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.
R.Balbinot, A. Fabbri, S. Fagnocchi, A.Recati, I. Carusotto (2008). Non-local density correlations as signal of Hawking radiation in BEC acoustic black holes. PHYSICAL REVIEW A, 78, 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.
