Uniformly frustrated bosonic Josephson-junction arrays
arXiv:0806.2012 · doi:10.1103/PhysRevA.79.021604
Abstract
We derive a uniformly frustrated model that describes two-dimensional Josephson-junction arrays consisting of rotating Bose-Einstein condensates trapped by both a harmonic trap and a corotating deep optical lattice. The harmonic trap makes the coupling constant of the model have a nonuniform parabolic dependance. We study the ground state through Monte Carlo simulations in a wide range of the frustration parameter , revealing a rich variety of vortex patterns.
5 pages, 2 figures
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