Asymptotic Interactions of Critically Coupled Vortices

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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23 pages, 1 figure; some references and a discussion of asymptotic curvature properties added

Scientific paper

10.1007/s00220-003-0842-4

At critical coupling, the interactions of Ginzburg-Landau vortices are determined by the metric on the moduli space of static solutions. The asymptotic form of the metric for two well separated vortices is shown here to be expressible in terms of a Bessel function. A straightforward extension gives the metric for N vortices. The asymptotic metric is also shown to follow from a physical model, where each vortex is treated as a point-like particle carrying a scalar charge and a magnetic dipole moment of the same magnitude. The geodesic motion of two well separated vortices is investigated, and the asymptotic dependence of the scattering angle on the impact parameter is determined. Formulae for the asymptotic Ricci and scalar curvatures of the N-vortex moduli space are also obtained.

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