Melting transition of vortex lattice in point vortex systems

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    Abstract

    Point vortices take a triangular lattice structure in a rotating system as a minimum energy state. We perform a numerical simulation of point vortex systems using initial conditions indicating that the triangular lattice is randomly perturbed. The total energy increases with the magnitude of the perturbation. When the energy is increased, the vortex lattice becomes irregular and a layered structure appears. When the energy is further increased, the layered structure disappears and a liquidlike state appears. We interpret the melting transition with a mean-field approximation for layered structures.

    Original languageEnglish
    Article number104008
    Journaljournal of the physical society of japan
    Volume81
    Issue number10
    DOIs
    Publication statusPublished - Oct 2012

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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