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16 April 2024

» arxiv » nlin/0611007

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Change in the adiabatic invariant in a nonlinear two-mode model of Feschbach resonance passage
A.P. Itin ; A.A. Vasiliev ; S. Watanabe ; G.Krishna ;
Date:	3 Nov 2006
Subject:	Chaotic Dynamics
Abstract:	Mean-field approach has recently been used to model narrow Feschbach resonance passage. 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 non-zero initial action, which corresponds to some finite initial molecular fraction.
Source:	arXiv, nlin/0611007
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