Berlin 2008 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 38: Matter At Low Temperature: Quantum Liquids, Bose-Einstein Condensates, Ultra-cold Atoms, ...

TT 38.7: Talk

Friday, February 29, 2008, 12:00–12:15, H 3010

Vorticity in rotating 2D Bose-Einstein condensates in the regime of strong coupling — •Tanja Rindler-Daller — Institut für Theoretische Physik, Universität zu Köln, Zülpicher Strasse 77, 50937 Köln, Germany

When Bose-Einstein condensates are subjected to an external rotation different vortex structures appear depending on the applied angular velocity Ω. We study the ground state within the Gross-Pitaevskii theory in the limit of large coupling constant for condensates which are confined in (asymptotically) homogeneous trap potentials [1,2]. We identify three regimes in Ω, which are characterized by a distinctive behaviour in the density profile and vortex structures, by rigorous estimates.

[1] M.Correggi, T.Rindler-Daller, J.Yngvason, J.Math.Phys. 48, 042104 & 102103 (2007)

[2] T.Rindler-Daller, accepted by Physica A