JournalsjemsVol. 9, No. 2pp. 177–217

Vortex collisions and energy-dissipation rates in the Ginzburg–Landau heat flow. <BR>Part I: Study of the perturbed Ginzburg–Landau equation

  • Sylvia Serfaty

    Université Pierre et Marie Curie (Paris VI), France
Vortex collisions and energy-dissipation rates in the Ginzburg–Landau heat flow. <BR>Part I: Study of the perturbed Ginzburg–Landau equation cover
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Abstract

We study vortices for solutions of the perturbed Ginzburg-Landau equations Δu+1\ep2u(1u2)=\a\Delta u+ \frac{1}{\ep2} u(1-|u|^2)=\a where \a\a is estimated in L2L2. We prove upper bounds for the Ginzburg-Landau energy in terms of \aL2\|\a\|_{L2}, and obtain lower bounds for \aL2\|\a\|_{L2} in term of the vortices when these form ``unbalanced clusters" where \sum_i d_i2\neq \(\sum_i d_i\)2. These results will serve in Part II of this paper \cite{part2} to provide estimates on the energy-dissipation rates for solutions of the Ginzburg-Landau heat-flow, which allow to study various phenomena occurring in this flow, among which vortex-collisions; allowing in particular to extend the dynamical law of vortices passed collisions.

Cite this article

Sylvia Serfaty, Vortex collisions and energy-dissipation rates in the Ginzburg–Landau heat flow. <BR>Part I: Study of the perturbed Ginzburg–Landau equation. J. Eur. Math. Soc. 9 (2007), no. 2, pp. 177–217

DOI 10.4171/JEMS/77