Competition between Vortex Unbinding and Tunneling in an Optical Lattice

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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.
4+ pages, 1 figure

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Statistical Mechanics, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/130376

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0701761
 http://arxiv.org/abs/cond-mat/0701761
 Physical Review A 75, 051603(R) (2007)
 doi:10.1103/PhysRevA.75.051603

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arXiv