Coexistence of superfluid and Mott phases of lattice bosons

R. A. Barankov, C. Lannert, S. Vishveshwara

Research output: Contribution to journalArticlepeer-review


Recent experiments on strongly interacting bosons in optical lattices have revealed the coexistence of spatially separated Mott-insulating and number-fluctuating phases. We explore the condensate properties of the number fluctuating phase trapped between the Mott-insulating regions and derive the associated collective-mode structure. We discuss the crossover of the interlayer properties between two- and three-dimensional behavior as a function of the lattice parameters and estimate the critical temperatures for the transition from the normal to superfluid state.

Original languageEnglish (US)
Article number063622
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
StatePublished - Jun 21 2007

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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