Local-density approximation for confined bosons in an optical lattice
نویسندگان
چکیده
منابع مشابه
Rotating states for trapped bosons in an optical lattice
Rotational states for trapped bosons in an optical lattice are studied in the framework of the Hubbard model. Critical frequencies are calculated and the main parameter regimes are identified. Transitions are observed from edge superfluids to vortex lattices with Mott insulating cores, and subsequently to lattices of interstitial vortices. The former transition coincides with the Mott transitio...
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Congjun Wu, Han-dong Chen, Jiang-piang Hu, and Shou-Cheng Zhang Department of Physics, McCullough Building, Stanford University, Stanford, California 94305-4045, USA Department of Applied Physics, McCullough Building, Stanford University, Stanford, California 94305-4045, USA Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547, USA (Received 9 Decemb...
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We present a theoretical analysis of the phase diagram of twocomponent bosons on an optical lattice. A new formalism is developed which treats the effective spin interactions in the Mott and superfluid phases on the same footing. Using this new approach we chart the phase boundaries of the broken spin symmetry states up to the Mott to superfluid transition and beyond. Near the transition point,...
متن کاملMott domains of bosons confined on optical lattices.
In the absence of a confining potential, the boson-Hubbard model exhibits a superfluid to Mott insulator quantum phase transition at commensurate fillings and strong coupling. We use quantum Monte Carlo simulations to study the ground state of the one-dimensional bosonic Hubbard model in a trap. Some, but not all, aspects of the Mott insulating phase persist. Mott behavior occurs for a continuo...
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ژورنال
عنوان ژورنال: Physical Review A
سال: 2004
ISSN: 1050-2947,1094-1622
DOI: 10.1103/physreva.70.053601