Nonlocal density correlations as a signature of Hawking radiation from acoustic black holes

6533b7cffe1ef96bd1257cdf

RESEARCH PRODUCT

Nonlocal density correlations as a signature of Hawking radiation from acoustic black holes

Alessio Recati Serena Fagnocchi Iacopo Carusotto Roberto Balbinot Alessandro Fabbri

subject

Physics Condensed Matter::Quantum Gases BOSONS Sonic black hole Quantum field theory in curved spacetime Phonon Atomic and Molecular Physics and Optics Black hole Gravitation Correlation function (statistical mechanics)General Relativity and Quantum Cosmology HIERARCHY Quantum mechanics Quantum electrodynamics ANALOG OUTPUT COUPLER Signature (topology)ATOM LASER Hawking radiation

description

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.

year	journal	country	edition	language
2008-08-19

10.1103/physreva.78.021603 http://www.cnr.it/prodotto/i/2844

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