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Quasi-equilibrium mixture of itinerant and localized bose atoms in optical lattice

V. I. YukalovBogolyubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980, RussiaA. RakhimovInstitute of Nuclear Physics, Tashkent, 100214, UzbekistanS. MardonovSamarkand State University, Samarkand, Uzbekistan

Laser Physicsjournal2010en

ABI

Annotatsiya

Conditions are studied under which there can exist a quasi-equilibrium mixture of itinerant and localized bosonic atoms in an optical lattice, even at zero temperature and at integer filling factor, when such a coexistence is impossible for an equilibrium lattice. The consideration is based on a model having the structure of a two-band, or two-component, boson Hubbard Hamiltonian. The minimal value for the ratio of onsite repulsion to tunneling parameter, necessary for the occurrence of such a mixture, is found.

Mavzular

Cold Atom Physics and Bose-Einstein Condensates Quantum chaos and dynamical systems Nonlinear Photonic Systems

Identifikatorlar

DOI: 10.1134/s1054660x11010233

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