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  • Title: Vortex states of rapidly rotating dilute Bose-Einstein condensates.
    Author: Fischer UR, Baym G.
    Journal: Phys Rev Lett; 2003 Apr 11; 90(14):140402. PubMed ID: 12731899.
    Abstract:
    We show that, in the Thomas-Fermi regime, the cores of vortices in rotating dilute Bose-Einstein condensates adjust in radius as the rotation velocity, Omega, grows, thus precluding a phase transition associated with core overlap at high vortex density. In both a harmonic trap and a rotating hard-walled bucket, the core size approaches a limiting fraction of the intervortex spacing. At large rotation speeds, a system confined in a bucket develops, within Thomas-Fermi, a hole along the rotation axis, and eventually makes a transition to a giant vortex state with all the vorticity contained in the hole.
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