Vortex lattices in Bose-Einstein condensates with dipolar interactions beyond the weak-interaction limit

S. Komineas and N. R. Cooper
Phys. Rev. A 75, 023623 – Published 28 February 2007

Abstract

We study the ground states of rotating atomic Bose-Einstein condensates with dipolar interactions. We present the results of numerical studies on a periodic geometry which show vortex lattice ground states of various symmetries: triangular and square vortex lattices, “stripe crystal,” and “bubble crystal.” We present the phase diagram (for systems with a large number of vortices) as a function of the ratio of dipolar to contact interactions and of the chemical potential. We discuss the experimental requirements for observing transitions between vortex lattice ground states via dipolar interactions. We finally investigate the stability of mean-field supersolid phases of a quasi-two-dimensional nonrotating Bose gas with dipolar interactions.

  • Figure
  • Received 25 October 2006

DOI:https://doi.org/10.1103/PhysRevA.75.023623

©2007 American Physical Society

Authors & Affiliations

S. Komineas1,2 and N. R. Cooper1

  • 1Theory of Condensed Matter Group, Cavendish Laboratory, J.J. Thomson Avenue, Cambridge CB3 0HE, United Kingdom
  • 2Max-Planck Institute for the Physics of Complex Systems, Nöthnitzer Str. 38, 01187, Dresden, Germany

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Issue

Vol. 75, Iss. 2 — February 2007

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