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Collective Excitations of Trapped Superfluid Fermi Gases in a BCS-BEC Crossover with Arbitrary Atom Numbers

โœ Scribed by Cheng-tao Wang; C. R. Ma; Yong-li Ma


Publisher
Springer US
Year
2008
Tongue
English
Weight
525 KB
Volume
154
Category
Article
ISSN
0022-2291

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Excitations in the BCSโ€“BEC crossover reg
โœ Yoji Ohashi ๐Ÿ“‚ Article ๐Ÿ“… 2006 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 243 KB

We investigate single-particle excitations at T = 0 in the BCS-BEC crossover regime of a superfluid Fermi gas. We solve the Bogoliubov-de Gennes equations in a trap, including a tunable pairing interaction associated with a Feshbach resonance. We show that the single-particle energy gap E g is domin