Competition between Vortex Unbinding and Tunneling in an Optical Lattice

Details Competition between Vortex Unbinding and Tunneling in an Optical Lattice Competition between Vortex Unbinding and Tunneling in an Optical Lattice

2007-01-30

arxiv.org/abs/cond-mat/0701761v1

Physical Review A 75, 051603(R) (2007)

Physics

Condensed Matter

Statistical Mechanics

4+ pages, 1 figure

Scientific paper

10.1103/PhysRevA.75.051603

We study a system of two-dimensional Bose gases trapped in minima of a deep one-dimensional optical lattice potential. Increasing the tunneling amplitude between adjacent gases drives a deconfinement transition to a phase where coherence is established between neighboring two-dimensional gases. We compute the signature of this transition in the interference pattern of the system as well as in its rotational response, which provides a direct measurement of the superfluidity in the system.

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