Gauge invariance and asymptotic behavior for the Ginzburg-Landau equations of superconductivity |
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Authors: | Valeria Berti Mauro Fabrizio |
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Affiliation: | a Dipartimento di Matematica, Università di Brescia, Via Valotti 9, I-25133 Brescia, Italy b Dipartimento di Matematica, Università di Bologna, P.zza di Porta S.Donato 5, I-40127 Bologna, Italy |
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Abstract: | In this paper we study the gauge invariance of the time-dependent Ginzburg-Landau equations through the introduction of a model which uses observable variables. We observe that the various choices of gauge lead to a different representation of such variables and therefore to a different definition of the weak solution of the problem. With a suitable decomposition of the unknown fields, related to the choice of London gauge, we examine the Ginzburg-Landau equations and deduce some energy estimates which prove the existence of a maximal attractor for the system. |
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Keywords: | Superconductivity Gauge invariance Global attractor |
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