Uniqueness of Axisymmetric Vortices in the Magnetic Ginzburg-Landau Equations

Abstract

We study vortex solutions of the magnetic Ginzburg-Landau model (or the Abelian-Higgs model). We establish uniqueness of axisymmetric vortex solutions for every winding number $n\ge 1$ and coupling constant $\lambda >0$. Our proof uses a lattice inequality and constrained minimization to construct a positive radial solution lying above any two given radial solutions. A comparison argument based on the virial identity then establishes uniqueness. We further prove that the unique radial solution depends real analytically on $\lambda$ and that both radial profiles are strictly increasing with respect to $\lambda$.

arXiv comment31 pages