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

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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https://hal-iogs.archives-ouvertes.fr/hal-00714837
Contributor : Christoph I Westbrook <>
Submitted on : Thursday, November 29, 2012 - 12:03:06 PM
Last modification on : Wednesday, September 16, 2020 - 5:43:00 PM
Long-term archiving on: : Saturday, December 17, 2016 - 5:25:11 PM

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Jean-Christophe Jaskula, Guthrie B. Partridge, Marie Bonneau, Raphaël Lopes, Josselin Ruaudel, et al.. An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate. Physical Review Letters, American Physical Society, 2012, 109, pp.220401. ⟨10.1103/PhysRevLett.109.220401⟩. ⟨hal-00714837v2⟩

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