Dynamics of a single ring of vortices in two-dimensional trapped Bose-Einstein condensates

Details Dynamics of a single ring of vortices in two-dimensional trapped Bose-Einstein condensates Dynamics of a single ring of vortices in two-dimensional trapped Bose-Einstein condensates

2004-07-01

arxiv.org/abs/cond-mat/0407048v1

Physics

Condensed Matter

Other Condensed Matter

6 figures, submitted to PRA

Scientific paper

10.1103/PhysRevA.70.043624

The dynamics of a ring of vortices in two-dimensional Bose-Einstein condensates (with and without an additional vortex at the center) is studied for (1) a uniform condensate in a rigid cylinder and (2) a nonuniform trapped condensate in the Thomas-Fermi limit. The sequence of ground states (within these single-ring configurations) is determined as a function of the external rotation frequency by comparing the free energy of the various states. For each ground state, the Tkachenko-like excitations and the associated dynamical stability are analyzed.

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