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arXiv · 1708.05040

On the uniqueness of minimisers of Ginzburg-Landau functionals

Radu Ignat·Luc Nguyen·Valeriy Slastikov·Arghir Zarnescu
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Abstract

We provide necessary and sufficient conditions for the uniqueness of minimisers of the Ginzburg-Landau functional for $\mathbb{R}^n$-valued maps under a suitable convexity assumption on the potential and for $H^{1/2} \cap L^\infty$ boundary data that is non-negative in a fixed direction $e\in \mathbb{S}^{n-1}$. Furthermore, we show that, when minimisers are not unique, the set of minimisers is generated from any of its elements using appropriate orthogonal transformations of $\mathbb{R}^n$. We also prove corresponding results for harmonic maps

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Radu Ignat, Luc Nguyen, Valeriy Slastikov, Arghir Zarnescu. 2017-08-16. On the uniqueness of minimisers of Ginzburg-Landau functionals. https://arxiv.org/abs/1708.05040

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