Vortex states of rapidly rotating dilute Bose-Einstein condensates

Details Vortex states of rapidly rotating dilute Bose-Einstein condensates Vortex states of rapidly rotating dilute Bose-Einstein condensates

2001-11-23

arxiv.org/abs/cond-mat/0111443v5

Phys.Rev.Lett.90:140402,2003

Physics

Condensed Matter

4 pages, 2 figures, RevTex4. Version as published; discussion extended, some references added and updated

Scientific paper

10.1103/PhysRevLett.90.140402

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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