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Loss of superfluidity in a Bose-Einstein condensate on an optical lattice via a novel classical phase transition | Sadhan K. Adhikari
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11 Nov 2002 | Journal: | Phys. Lett. A. 308 (2003) 302-307 | Subject: | Soft Condensed Matter; Other | cond-mat.soft cond-mat.other | Abstract: | We predict the loss of superfluidity in a Bose-Einstein condensate (BEC) trapped in a combined optical and axially-symmetric harmonic potentials during a resonant collective excitation initiated by a periodic modulation of the atomic scattering length $a$, when the modulation frequency equals twice the radial trapping frequency or multiples thereof. This classical dynamical transition is marked by a loss of superfluidity in the BEC and a subsequent destruction of the interference pattern upon free expansion. Suggestion for future experiment is made. | Source: | arXiv, cond-mat/0211215 | Services: | Forum | Review | PDF | Favorites |
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