Hannover 2013 – scientific programme

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A: Fachverband Atomphysik

A 35: Ultra-cold atoms, ions and BEC VII (with Q)

A 35.5: Talk

Thursday, March 21, 2013, 15:00–15:15, B 305

Semiclassical dynamics of ultracold Bosons in multiple wells — •Lena Simon and Walter Strunz — Institut für theoretische Physik, TU 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, and by means of the so called (semiclassical) Herman-Kluk propagator. The results are also compared to the often applied mean-field approximation.