Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2007-11-28
Phys.Rev.A78:021603,2008
Physics
Condensed Matter
Other Condensed Matter
Strongly revised version. 5 pages, 3 eps figures
Scientific paper
10.1103/PhysRevA.78.021603
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.
Balbinot Roberto
Carusotto Iacopo
Fabbri Alessandro
Fagnocchi Serena
Recati Alessio
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