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arXiv 1111.1571math.AP
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具有给定次数的Ginzburg-Landau泛函的局部极小元

Local Minimizers of the Ginzburg-Landau Functional with Prescribed Degrees

Mickaël Dos Santos

摘要:

在光滑有界多连通区域$\dom\subset\R^2$中,考虑了$\p\dom$的每个分量满足给定度条件的Ginzburg-Landau能量$\d E_\v(u)=1/2\int_\dom{|\n u|^2}+\frac{1}{4\v^2}\int_\dom{(1-|u|^2)^2}$.一般来说,最小能量图不存在\cite{BeMi1}。当$\dom$有一个单一的孔,Berlyand和Rybalko \cite{BeRy1}证明,对于小的$\v$局部极小确实存在。我们推广了\cite{BeRy1}的结果:在具有$2,3,...$洞的域$\dom$中,$\d E_\v(u)$具有局部极小元,对于小的$\v$,具有局部极小元.我们的方法与\cite{BeRy1}中的方法非常相似;主要区别在于能量控制的检验函数的构造。

英文摘要:

We consider, in a smooth bounded multiply connected domain $\dom\subset\R^2$, the Ginzburg-Landau energy $\d E_\v(u)=1/2\int_\dom{|\n u|^2}+\frac{1}{4\v^2}\int_\dom{(1-|u|^2)^2}$ subject to prescribed degree conditions on each component of $\p\dom$. In general, minimal energy maps do not exist \cite{BeMi1}. When $\dom$ has a single hole, Berlyand and Rybalko \cite{BeRy1} proved that for small $\v$ local minimizers do exist. We extend the result in \cite{BeRy1}: $\d E_\v(u)$ has, in domains $\dom$ with $2,3,...$ holes and for small $\v$, local minimizers. Our approach is very similar to the one in \cite{BeRy1}; the main difference stems in the construction of test functions with energy control.

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