Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 40: Poster: Ultra-cold atoms, ions and BEC

A 40.16: Poster

Donnerstag, 15. März 2012, 16:30–19:00, Poster.V

(contribution withdrawn) Semiclassical Dynamics of Ultracold Bosons in Multiple Wells — •Lena Simon and Walter T. Strunz — Institut für theoretische Physik, TU Dresden, Dresden

We aim to shed light on the transition from a nonequilibrium to an equilibrium state of an interacting bosonic manybody system. We investigate the dynamics of an ensemble of Bosons in a multiple well potential, which has been initially set up in a nonequilibrium state. The Bosons display interesting dynamics, gouverned by the interplay of tunneling and the interaction amongst the particles. The dynamics are investigated by solving the full Schroedinger equation for a Bose-Hubbard-model, by introducing the WKB-approximation and finally by means of the so called (semiclassical) Herman-Kluk propagator. The results are also compared to the often applied mean-field approximation.