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Superfluid-Insulator Transition in a Moving System of Interacting Bosons
(American Physical Society (APS), 2005)
We analyze the stability of superfluid currents in a system of strongly interacting ultracold atoms in an optical lattice. We show that such a system undergoes a dynamic, irreversible phase transition at a critical phase ...
Decay of superfluid currents in a moving system of strongly interacting bosons
(American Physical Society (APS), 2005)
We analyze the stability and decay of supercurrents of strongly interacting bosons on optical lattices. At the mean-field level, the system undergoes an irreversible dynamic phase transition, whereby the current decays ...