On localization of atomic gases in optical lattices

It is shown that an ultra cold atomic Bose gas placed in an optical lattice is an ideal system for controlled analysis of disordered Bose latttice gases. It is shown that disorder added to such a lattice may drive a transition from superfluid to Bose-glass phase in the strong coupling limit. Similarly for weakly interaction bosons a transition from superfluid to Anderson localization may be simulated.