Calculus of Variations and Geometric Measure Theory
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S. Baldo - R. L. Jerrard - G. Orlandi - H. M. Soner

Vortex density models for superconductivity and superfluidity

created by orlandi on 03 Jan 2012
modified on 18 Mar 2013

[BibTeX]

Published Paper

Inserted: 3 jan 2012
Last Updated: 18 mar 2013

Journal: Comm. Math. Physics
Volume: 318
Number: 1
Pages: 131--171
Year: 2013
Doi: 10.1007/s00220-012-1629-2
Links: link at Springer url

Abstract:

We study some functionals that describe the density of vortex lines in superconductors subject to an applied magnetic field, and in Bose-Einstein condensates subject to rotational forcing, in quite general domains in 3 dimensions. These functionals are derived from more basic models via Gamma-convergence, here and in the companion paper 4. In our main results, we use these functionals to obtain descriptions of the critical applied magnetic field (for superconductors) and forcing (for Bose-Einstein), above which ground states exhibit nontrivial vorticity, as well as a characterization of the vortex density in terms of a non local vector-valued generalization of the classical obstacle problem.

Keywords: Gamma-convergence, Superconductivity, vortices, Bose-Einstein condensation


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