An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate
| Autor: | Jaskula, Jean-Christophe, Partridge, Guthrie B., Bonneau, Marie, Lopes, Raphaël, Ruaudel, Josselin, Boiron, Denis, Westbrook, Christoph I |
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| Rok vydání: | 2012 |
| Předmět: | |
| Zdroj: | Physical Review Letters 109 (2012) 220401 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.109.220401 |
| Popis: | 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. Comment: Includes supplemental information |
| Databáze: | arXiv |
| Externí odkaz: |
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