Superfluid-insulator transition in a moving system of interacting bosons

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dc.creatorAltman, E.
dc.creatorPolkovnikov, A.
dc.creatorDemler, E.
dc.creatorHalperin, B.
dc.creatorLukin, M. D.
dc.date2004-11-01
dc.date2005-04-12
dc.date.accessioned2026-07-07T03:01:50Z
dc.date.available2026-07-07T03:01:50Z
dc.descriptionWe analyze stability of superfluid currents in a system of strongly interacting ultra-cold atoms in an optical lattice. We show that such a system undergoes a dynamic, irreversible phase transition at a critical phase gradient that depends on the interaction strength between atoms. At commensurate filling, the phase boundary continuously interpolates between the classical modulation instability of a weakly interacting condensate and the equilibrium quantum phase transition into a Mott insulator state at which the critical current vanishes. We argue that quantum fluctuations smear the transition boundary in low dimensional systems. Finally we discuss the implications to realistic experiments.
dc.descriptionupdated refernces and introduction, minor corrections
dc.identifierhttps://arxiv.org/abs/cond-mat/0411047
dc.identifierhttp://arxiv.org/abs/cond-mat/0411047
dc.identifierPhys. Rev. Lett. 95, 020402 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.020402
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25192
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.subjectSuperconductivity
dc.titleSuperfluid-insulator transition in a moving system of interacting bosons
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