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.
|Number of pages||1|
|Journal||Physical Review Letters|
|Early online date||1 Apr 2004|
|Publication status||Published - 1 Apr 2004|