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Mean-field description of collapsing and exploding Bose-Einstein condensates | | Sadhan K. Adhikari
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4 Mar 2002 | | Journal: | Phys. Rev. A 66 (2002) 013611 (1-8) | | Subject: | Soft Condensed Matter | cond-mat.soft | | Abstract: | We perform numerical simulation based on the time-dependent mean-field Gross-Pitaevskii equation to understand some aspects of a recent experiment by Donley et al. on the dynamics of collapsing and exploding Bose-Einstein condensates of $^{85}$Rb atoms. They manipulated the atomic interaction by an external magnetic field via a Feshbach resonance, thus changing the repulsive condensate into an attractive one and vice versa. In the actual experiment they changed suddenly the scattering length of atomic interaction from positive to a large negative value on a pre-formed condensate in an axially symmetric trap. Consequently, the condensate collapses and ejects atoms via explosion. We find that the present mean-field analysis can explain some aspects of the dynamics of the collapsing and exploding Bose-Einstein condensates. | | Source: | arXiv, cond-mat/0203071 | | Services: | Forum | Review | PDF | Favorites | |
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