Bose-Einstein condensation in the alkali gases: Some fundamental concepts
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- 24 April 2001
- journal article
- research article
- Published by American Physical Society (APS) in Reviews of Modern Physics
- Vol. 73 (2), 307-356
- https://doi.org/10.1103/revmodphys.73.307
Abstract
The author presents a tutorial review of some ideas that are basic to our current understanding of the phenomenon of Bose-Einstein condensation (BEC) in the dilute atomic alkali gases, with special emphasis on the case of two or more coexisting hyperfine species. Topics covered include the definition of and conditions for BEC in an interacting system, the replacement of the true interatomic potential by a zero-range pseudopotential, the time-independent and time-dependent Gross-Pitaevskii equations, superfluidity and rotational properties, the Josephson effect and related phenomena, and the Bogoliubov approximation.Keywords
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