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.
- Received 16 October 2003
DOI:https://doi.org/10.1103/PhysRevLett.92.130405
©2004 American Physical Society