title: Mean-field theory of Feshbach-resonant interactions in 85Rb condensates.
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.
authors.affiliation: Helsinki Institute of Physics, PL 64, FIN-00014 Helsingin yliopisto, Finland.
authors.forename: Matt
authors.initials: M
authors.lastname: Mackie
authors.forename: Kalle-Antti
authors.initials: KA
authors.lastname: Suominen
authors.forename: Juha
authors.initials: J
authors.lastname: Javanainen