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Deconfinement in a 2D optical lattice of coupled 1D boson systems

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We show that a two-dimensional (2D) array of 1D interacting boson tubes has a deconfinement transition between a 1D Mott insulator and a 3D superfluid for commensurate fillings and a dimensional crossover for the incommensurate case. We determine the phase diagram and excitations of this system and discuss the consequences for Bose condensates loaded in 2D optical lattices.

References:

Ho et al, PRL 92 ,130405 (2004)

Cazalilla et al, NJP 8 , 158 (2006)

Iucci et al PRA 73 , 041608® (2006)

This talk is part of the TCM Blackboard Series series.

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