Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 21: Poster I

Q 21.4: Poster

Dienstag, 9. März 2010, 16:00–19:00, Lichthof

Dynamics of cold Bose gases: effects of incoherent scattering — •Luis Rico-Pérez and James R. Anglin — Technische Universität Kaiserslautern, Germany

The correct description of the dynamics of a Bose gas at low temperatures is of extreme importance in the study of trapped BECs. Although some previous theoretical treatments can bring some light on the behavior of the non-condensed fraction of the gas, the condensation process and other interesting non-equilibrium phenomena, a global - and simple - formalism describing all of these is still necessary. We develop a formalism for the evolution of a cold and dilute Bose gas based in S-wave scattering calculations. In the Wigner representation and under certain assumptions, classical behavior terms appear. We use these terms in simulations of simple systems, like the double well potential, to check its validity and describe the effect that incoherent scattering processes have in the tunneling of particles.