Heidelberg 2015 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 18: Poster: Ultra-cold atoms, ions and BEC (with Q)

A 18.30: Poster

Dienstag, 24. März 2015, 17:00–19:00, C/Foyer

Interference of ultracold Bose gases — •Holger Hauptmann, Sigmund Heller, and Walter T. Strunz — Technische Universität Dresden

We study equilibrium and dynamical aspects of ultracold quasi one-dimensional Bose gases with repulsive self interaction. To describe Bose gases in the canonical ensemble (fixed particle number) a nonlinear stochastic matter-field equation will be presented. Applications of this equation to interference experiments from the Schmiedmayer group [1] will be shown. Moreover to study dynamical properties, it is necessary to create two correlated quasi one-dimensional cigar-shaped Bose gases. We present a stochastic splitting mechanism which simulates the tearing of one quasi one-dimensional cigar-shaped gas along the logitudinal axis into two Bose gases. Applications to dynamical interference experiments [1] exhibit good agreement.