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- W2072856875 abstract "We study the expansion of harmonically trapped bosons in a two-dimensional lattice after suddenly turning off the confining potential. We show that, in the presence of multiple occupancies per lattice site and strong interactions, the system exhibits a clear dynamical separation into slowly and rapidly expanding clouds. We discuss how this effect can be understood within a simple picture by invoking doublons and Bose enhancement. This picture is corroborated by an analysis of the momentum distribution function in the regions with slowly and rapidly expanding bosons." @default.
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- W2072856875 date "2013-09-30" @default.
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- W2072856875 title "Self-trapping in the two-dimensional Bose-Hubbard model" @default.
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- W2072856875 doi "https://doi.org/10.1103/physreva.88.031606" @default.
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