Düsseldorf 2007 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantengase (Unordnung)

Q 12.4: Talk

Monday, March 19, 2007, 17:15–17:30, 6J

Bogoliubov excitations in 2D disordered Bose-Einstein condensates — •Christopher Gaul and Cord Müller — Universität Bayreuth

We consider a 2D--Bose--Einstein--Condensate in a disordered potential. In a first step we calculate the condensate density for different types of disorder using the Gross--Pitaevskii equation. In a second step we determine the disorder--broadened dispersion relation for elementary excitations using diagrammatic perturbation theory and calculate relevant transport coefficients.