Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1899003 | Physica D: Nonlinear Phenomena | 2007 | 8 Pages |
Abstract
Mean-field approach has recently been used to model coupled atom-molecular Bose–Einstein condensates (BEC) and coupled Fermi–Bose condensates near Feshbach resonance. Sweeping of magnetic field across the resonance gives a new (nonlinear) version of Landau–Zener problem. We investigate the structure of the corresponding classical phase space and calculate change in the action which corresponds to finite-rate efficiency of the sweep. We consider the case of nonzero initial action, which corresponds to some finite initial molecular fraction.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
A.P. Itin, A.A. Vasiliev, G. Krishna, S. Watanabe,