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Mean-field theory of Feshbach-resonant interactions in 85Rb condensates
Matt Mackie1, Kalle-Antti Suominen, Juha Javanainen
1Helsinki Institute of Physics, PL 64, FIN-00014 Helsingin yliopisto, Finland.
Abstract:
Recent Feshbach-resonance experiments with 85Rb Bose-Einstein condensates have led to a host of unexplained results: dramatic losses of condensate atoms for an across-resonance sweep of the magnetic field, a collapsing condensate with a burst of atoms emanating from the remnant condensate, increased losses for decreasing interaction times, and coherent oscillations between remnant and burst atoms. Using a simple yet realistic mean-field model, we find that rogue dissociation, molecular dissociation to noncondensate atom pairs, is strongly implicated as the physical mechanism responsible for these observations.
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