Superfluidity and solid order in a two-component Bose gas with dipolar interactions in an optical lattice
نویسندگان
چکیده
منابع مشابه
Anisotropic superfluidity in a dipolar Bose gas.
We study the superfluid character of a dipolar Bose-Einstein condensate (DBEC) in a quasi-two dimensional geometry. We consider the dipole polarization to have some nonzero projection into the plane of the condensate so that the effective interaction is anisotropic in this plane, yielding an anisotropic dispersion relation. By performing direct numerical simulations of a probe moving through th...
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A grand canonical system of hard-core bosons in an optical lattice is considered. The bosons can occupy randomly N equivalent states at each lattice site. The limit N → ∞ is solved exactly in terms of a saddle-point integration, representing a weakly-interacting Bose gas. In the limit N → ∞ there is only a condensate if the fugacity of the Bose gas is larger than 1. Corrections in 1/N increase ...
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T. P. Simula, M. J. Davis, and P. B. Blakie Lundbeck Foundation Theoretical Center for Quantum System Research, Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C, Denmark Laboratory of Physics, Helsinki University of Technology, P.O.Box 1100, FI-02015 TKK, Finland ARC Centre of Excellence for Quantum-Atom Optics, School of Physical Sciences, University of Queensland, B...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2014
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.90.063620