The sonic analogue of black hole radiation

Details The sonic analogue of black hole radiation The sonic analogue of black hole radiation

2006-04-24

arxiv.org/abs/cond-mat/0604541v1

Physics

Condensed Matter

Other Condensed Matter

14 pages, 7 figures, submitted to Journal of Physics B: Atomic, Molecular & Optical Physics

Scientific paper

10.1088/0953-4075/39/10/S11

A microscopic description of Hawking radiation in sonic black holes has been recently presented (Giovanazzi S 2005 Phys. Rev. Lett. 94 061302). This exactly solvable model is formulated in terms of one-dimensional scattering of a Fermi gas. In this paper, the model is extended to account possible finite size effects of a realistic geometry. The flow of particles is maintained by a piston (i.e. an impenetrable barrier) moving slowly towards the sonic horizon. Using existing technologies the Hawking temperature can be of order of a few microkelvin in a realistic experiment.

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