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

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...

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Bibliographic Details
Published in:Physical review letters 2004-04, Vol.92 (13), p.130405-130405, Article 130405
Main Authors: Ho, A F, Cazalilla, M A, Giamarchi, T
Format: Article
Language:English
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.92.130405