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A theoretical study on the damping of collective excitations in a Bose-Einstein condensate | | W. Vincent Liu
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12 Aug 1997 | | Journal: | Phys. Rev. Lett. 79 (1997) 4056 | | Subject: | Soft Condensed Matter | cond-mat.soft | | Affiliation: | University of Texas at Austin | | Abstract: | We study the damping of low-lying collective excitations of condensates in a weakly interacting Bose gas model within the framework of imaginary time path integral. A general expression of the damping rate has been obtained in the low momentum limit for both the very low temperature regime and the higher temperature regime. For the latter, the result is new and applicable to recent experiments. Theoretical predictions for the damping rate are compared with the experimental values. | | Source: | arXiv, cond-mat/9708080 | | Services: | Forum | Review | PDF | Favorites | |
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