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

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arxiv 1207.1338 v2 pith:DVGECYPV submitted 2012-07-05 cond-mat.quant-gas

Jean-Christophe Jaskula (LCF) , Guthrie B. Partridge (LCF) , Marie Bonneau (LCF) , Raphaël Lopes (LCF) , Josselin Ruaudel (LCF) , Denis Boiron (LCF) , Christoph I Westbrook (LCF) This is my paper · ORCID
classification cond-mat.quant-gas
keywords frequencyacousticanalogbose-einsteincasimircondensatedynamicaleffect
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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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