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Collective modes of trapped gases at the BEC-BCS crossover | | H. Heiselberg
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1 Mar 2004 | | Journal: | PRL 93, 040402 (2004) | | Subject: | Soft Condensed Matter; Superconductivity | cond-mat.soft cond-mat.supr-con | | Abstract: | The collective mode frequencies in isotropic and deformed traps are calculated for general polytropic equation of states, $Ppropto n^{gamma+1}$, and expressed in terms of $gamma$ and the trap geometry. For molecular and standard Bose-Einstein condensates and Fermi gases near Feshbach resonances, the effective power $gammasimeq0.5-1.3$ is calculated from Jastrow type wave-function ansätze, and from the crossover model of Leggett. The resulting mode frequencies are calculated for these phases around the BCS-BEC crossover. | | Source: | arXiv, cond-mat/0403041 | | Other source: | [GID 308068] pmid15323737 | | Services: | Forum | Review | PDF | Favorites | |
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