title: Deconfinement in a 2D optical lattice of coupled 1D boson systems.
abstract: 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.
authors.affiliation: School of Physics and Astronomy, The University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.
authors.forename: A F
authors.initials: AF
authors.lastname: Ho
authors.forename: M A
authors.initials: MA
authors.lastname: Cazalilla
authors.forename: T
authors.initials: T
authors.lastname: Giamarchi