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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.


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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