title: Bloch oscillations of Bose-Einstein condensates: breakdown and revival.
abstract: We investigate the dynamics of Bose-Einstein condensates 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.
authors.affiliation: FB Physik, Technische Universität Kaiserslautern, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Witthaut
authors.forename: M
authors.initials: M
authors.lastname: Werder
authors.forename: S
authors.initials: S
authors.lastname: Mossmann
authors.forename: H J
authors.initials: HJ
authors.lastname: Korsch