Vortex States of Rapidly Rotating Dilute Bose-Einstein Condensates

Uwe R. Fischer and Gordon Baym
Phys. Rev. Lett. 90, 140402 – Published 9 April 2003

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, Ω, 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.

  • Figure
  • Received 21 November 2001

DOI:https://doi.org/10.1103/PhysRevLett.90.140402

©2003 American Physical Society

Authors & Affiliations

Uwe R. Fischer and Gordon Baym

  • Department of Physics, University of Illinois at Urbana-Champaign, 1110 W. Green Street, Urbana, Illinois 61801-3080

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Vol. 90, Iss. 14 — 11 April 2003

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