Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2004-02-10
J. Phys. B: At. Mol. Opt. Phys. 37 (2004) 1185-1194
Physics
Condensed Matter
Soft Condensed Matter
12 pages, 8 figures, Accepted in J. Phys. B
Scientific paper
10.1088/0953-4075/37/6/004
We perform a systematic numerical study, based on the time-dependent Gross-Pitaevskii equation, of jet formation in collapsing and exploding Bose-Einstein condensates as in the experiment by Donley et al [2001 Nature 412 295]. In the actual experiment, via a Feshbach resonance, the scattering length of atomic interaction was suddenly changed from positive to negative on a pre-formed condensate. Consequently, the condensate collapsed and ejected atoms via explosion. On a disruption of collapse by suddenly changing the scattering length to zero a radial jet of atoms was formed in the experiment. We present a satisfactory account of jet formation under the experimental conditions as well as make predictions beyond experimental conditions which can be verified in future experiments.
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