Pair interactions of heavy vortices in quantum fluids

Ivan A. Pshenichnyuk

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    The dynamics of quantum vortex pairs carrying heavy doping matter trapped inside their cores is studied. The nonlinear classical matter field formalism is used to build a universal mathematical model of a heavy vortex applicable to different types of quantum mixtures. It is shown how the usual vortex dynamics typical for undoped pairs qualitatively changes when heavy dopants are used: heavy vortices with opposite topological charges (chiralities) attract each other, while vortices with the same charge are repelled. The force responsible for such behavior appears as a result of superposition of vortices velocity fields in the presence of doping substance and can be considered as a special realization of the Magnus effect. The force is evaluated quantitatively and its inverse proportionality to the distance is demonstrated. The mechanism described in this paper gives an example of how a light nonlinear classical field may realize repulsive and attractive interactions between embedded heavy impurities.

    Original languageEnglish
    Pages (from-to)523-527
    Number of pages5
    JournalPhysics Letters A
    Volume382
    Issue number7
    DOIs
    Publication statusPublished - 20 Feb 2018

    Keywords

    • BEC
    • Heavy vortex
    • Multicomponent quantum turbulence
    • Quantum vortex
    • Superfluid

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