title: Time reversal of Bose-Einstein condensates.
abstract: Using Gross-Pitaevskii equation, we study the time reversibility of Bose-Einstein condensates (BEC) in kicked optical lattices, showing that in the regime of quantum chaos, the dynamics can be inverted from explosion to collapse. The accuracy of time reversal decreases with the increase of atom interactions in BEC, until it is completely lost. Surprisingly, quantum chaos helps to restore time reversibility. These predictions can be tested with existing experimental setups.
authors.affiliation: Laboratoire de Physique Théorique, Université de Toulouse III, CNRS, 31062 Toulouse, France.
authors.forename: J
authors.initials: J
authors.lastname: Martin
authors.forename: B
authors.initials: B
authors.lastname: Georgeot
authors.forename: D L
authors.initials: DL
authors.lastname: Shepelyansky