Mean-field model of jet formation in a collapsing Bose-Einstein condensate
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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 disruption of the 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 and also make predictions beyond experimental conditions which can be verified in future experiments.
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Atomic scattering, Bose-Einstein condensates, Jet formation, Computer simulation, Magnetic field effects, Mathematical models, Quantum theory, High energy physics
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Inglês
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Journal of Physics B: Atomic, Molecular and Optical Physics, v. 37, n. 6, p. 1185-1194, 2004.
