Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice

Details Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice

2011-08-09

arxiv.org/abs/1108.1857v2

Phys. Rev. A 84, 053623 (2011)

Physics

Condensed Matter

Quantum Gases

7 pages, 5 figures

Scientific paper

10.1103/PhysRevA.84.053623

We study the dynamics of vortex nucleation and lattice formation in a Bose--Einstein condensate in a rotating square optical lattice by numerical simulations of the Gross--Pitaevskii equation. Different dynamical regimes of vortex nucleation are found, depending on the depth and period of the optical lattice. We make an extensive comparison with the experiments by Williams {\it et al.} [Phys. Rev. Lett. {\bf 104}, 050404 (2010)], especially focusing on the issues of the critical rotation frequency for the first vortex nucleation and the vortex number as a function of rotation frequency.

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