Low-dimensional Bose liquids: beyond the Gross-Pitaevskii approximation

Eugene B. Kolomeisky, T. J. Newman, Joseph P. Straley, Xiaoya Qi

    Research output: Contribution to journalArticlepeer-review

    302 Citations (Scopus)


    The Gross-Pitaevskii approximation is a long-wavelength theory widely used to describe a variety of properties of dilute Bose condensates, in particular trapped alkali gases. We point out that for short-ranged repulsive interactions this theory fails in dimensions d=2, and we propose the appropriate low-dimensional modifications, which have a universal form. For d=1 we analyze density profiles in confining potentials, superfluid properties, solitons, and self-similar solutions.
    Original languageEnglish
    Pages (from-to)1146-1149
    Number of pages4
    JournalPhysical Review Letters
    Issue number6
    Publication statusPublished - 7 Aug 2000


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