Uniformly frustrated bosonic Josephson-junction arrays

Details Uniformly frustrated bosonic Josephson-junction arrays Uniformly frustrated bosonic Josephson-junction arrays

2008-06-12

arxiv.org/abs/0806.2012v2

Phys. Rev. A 79, 021604 (2009)

Physics

Condensed Matter

Statistical Mechanics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.79.021604

We derive a uniformly frustrated $XY$ 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 $f$, revealing a rich variety of vortex patterns.

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