Bloch oscillations of Bose-Einstein condensates: Breakdown and revival
arXiv:cond-mat/0410258 · doi:10.1103/PhysRevE.71.036625
Abstract
We investigate the dynamics of Bose-Einstein condensates (BEC) in a tilted one-dimensional periodic lattice within the mean-field (Gross-Pitaevskii) description. Unlike in the linear case the Bloch oscillations decay because of nonlinear dephasing. Pronounced revival phenomena are observed. These are analyzed in detail in terms of a simple integrable model constructed by an expansion in Wannier-Stark resonance states. We also briefly discuss the pulsed output of such systems for stronger static fields.
RevTeX4, 9 pages, 14 figures
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