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Rapidly rotating Bose-Einstein condensates in an anharmonic confinement

Li-Hua Lu·You-Quan Li
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Abstract

We examine a rapidly rotating Bose-Einstein condensate in an anharmonic confinement and find that many properties such as the critical rotating frequency and phase diagram are quite different from those in a harmonic trap. We investigate the phase transitions by means of average-vortex-approximation. We find that the vortex lattice consists of a vortex array with a hole in the center of the cloud as the rotating frequency $Ω$ increases and the vortex becomes invisible when $Ω$ reaches some value.

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Li-Hua Lu, You-Quan Li. 2005-03-22. Rapidly rotating Bose-Einstein condensates in an anharmonic confinement. https://doi.org/10.2478/s11534-006-0013-2

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