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arXiv · 1207.1338

An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate

Jean-Christophe Jaskula·Guthrie B. Partridge·Marie Bonneau·Raphaël Lopes·Josselin Ruaudel·Denis Boiron·Christoph I Westbrook
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Abstract

We have realized an acoustic analog to the Dynamical Casimir effect. The density of a trapped Bose-Einstein condensate is modulated by changing the trap stiffness. We observe the creation of correlated excitations with equal and opposite momenta, and show that for a well defined modulation frequency, the frequency of the excitations is half that of the trap modulation frequency.

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Jean-Christophe Jaskula, Guthrie B. Partridge, Marie Bonneau, Raphaël Lopes, Josselin Ruaudel, Denis Boiron, Christoph I Westbrook. 2012-11-29. An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate. https://doi.org/10.1103/physrevlett.109.220401

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