Rotating BEC in an optical lattice in Uniformly frustrated Josephson Junction arrays regime: Vortex configuration formulation for ground state
arXiv:1010.4147 · doi:10.1016/j.physb.2010.12.051
Abstract
We consider a rotating BEC in an optical lattices in a regime which can be mapped to the Joseohson junction arrays. In this regime, we formulate the ground state energy in terms of vortex configuration. This method give us the vortex lattice in the ground state in a natural way. We apply our result for an approximation scheme of the problem which we suppose that the coupling of the Josephson junctions are uniform. Application of method for ladder case presented and the results compared with Monte-Carlo method numerically.We discuss about restriction of method and suggest improvement for it.
6 pages, 7 figures
References in corpus (7)
- Bose-Einstein Condensation in Magnetic Insulators
- Observation of Vortex Pinning in Bose-Einstein Condensates
- Vortex proliferation in the Berezinskii-Kosterlitz-Thouless regime on a two-dimensional lattice of Bose-Einstein condensates
- Uniformly frustrated bosonic Josephson-junction arrays
- Structure of vortices in rotating Bose-Einstein condensates
- Spatially-modulated Superfluid States in Fermionic Optical Ladder Systems with Repulsive Interactions
- Degeneracy of Many-body Quantum States in an Optical Lattice with a Uniform Magnetic Field