Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 56: Poster III
Q 56.48: Poster
Donnerstag, 21. März 2013, 16:00–18:30, Empore Lichthof
Stability of Rotating Bose Gases at Finite Temperature — •Holger Hauptmann1,2, Patrick Navez2, Holger Kantz1, and Walter T. Strunz2 — 1Max-Planck-Institut für Physik komplexer Systeme, Dresden — 2Technische Universität Dresden
We investigate the stability of the relative motion between a Bose-Einstein condensate and its thermal cloud for a gas with repulsive self-interaction at finite temperature in a harmonic trap. The thermal cloud is described by a semi-classical Bose-Einstein distribution. The condensate obeys the Gross-Pitaevskii equation. Stirring the system at low frequencies leads to a rotation of the thermal cloud with a resting condensate. We are looking for the critical angular velocity between condensate and thermal cloud for which the system becomes unstable.