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Journal Articles Physical Review Letters Year : 2012

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

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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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Dates and versions

hal-00714837 , version 1 (05-07-2012)
hal-00714837 , version 2 (29-11-2012)

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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, 2012, 109, pp.220401. ⟨10.1103/PhysRevLett.109.220401⟩. ⟨hal-00714837v2⟩
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