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Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC


Reference:

Johnson, T. H., Yuan, Y., Bao, W., Clark, S. R., Foot, C. and Jaksch, D., 2016. Hubbard model for atomic impurities bound by the vortex lattice of a rotating BEC. Physical Review Letters, 116, 240402.

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    Official URL:

    http://dx.doi.org/10.1103/PhysRevLett.116.240402

    Abstract

    We investigate cold bosonic impurity atoms trapped in a vortex lattice formed by condensed bosons of another species. We describe the dynamics of the impurities by a bosonic Hubbard model containing occupation-dependent parameters to capture the effects of strong impurity-impurity interactions. These include both a repulsive direct interaction and an attractive effective interaction mediated by the BEC. The occupation dependence of these two competing interactions drastically affects the Hubbard model phase diagram, including causing the disappearance of some Mott lobes

    Details

    Item Type Articles
    CreatorsJohnson, T. H., Yuan, Y., Bao, W., Clark, S. R., Foot, C. and Jaksch, D.
    DOI10.1103/PhysRevLett.116.240402
    Uncontrolled Keywordscond-mat.quant-gas,quant-ph
    DepartmentsFaculty of Science > Physics
    Research CentresCondensed Matter Physics CDT
    RefereedYes
    StatusPublished
    ID Code50767
    Additional Information5 pages main text, 18 pages supplemental material

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