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Cold Bosonic Atoms in Optical Lattices
1998
Physical Review Letters
The dynamics of an ultracold dilute gas of bosonic atoms in an optical lattice can be described by a Bose-Hubbard model where the system parameters are controlled by laser light. We study the continuous (zero temperature) quantum phase transition from the superfluid to the Mott insulator phase induced by varying the depth of the optical potential, where the Mott insulator phase corresponds to a commensurate filling of the lattice ("optical crystal"). Examples for formation of Mott structures in
doi:10.1103/physrevlett.81.3108
fatcat:lvxdton2x5fwbdhq72xxtqqqti