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arXiv 2201.11100math.SPmath.AP
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具有Aharonov-Bohm磁势的磁Neumann和Steklov问题的等周不等式

Isoperimetric inequalities for the magnetic Neumann and Steklov problems with Aharonov-Bohm magnetic potential

Bruno Colbois, Luigi Provenzano, Alessandro Savo

摘要:

讨论了具有Aharonov-Bohm势的$\mathbb R^2$有界区域上的磁拉普拉斯算子的等周不等式.当极点附近的位势通量不是整数时,Neumann和Steklov问题的最低特征值为正。在Szegö-Weinberger,Brock和Weinstock的经典不等式的基础上,我们建立了最低特征值的等周不等式,模型区域是一个以极点为中心的圆盘.我们认为更一般的域在平面上赋予一个旋转不变的度量,其中包括球面和双曲的情况下。

英文摘要:

We discuss isoperimetric inequalities for the magnetic Laplacian on bounded domains of $\mathbb R^2$ endowed with an Aharonov-Bohm potential. When the flux of the potential around the pole is not an integer, the lowest eigenvalue for the Neumann and the Steklov problems is positive. We establish isoperimetric inequalitites for the lowest eigenvalue in the spirit of the classical inequalities of Szegö-Weinberger, Brock and Weinstock, the model domain being a disk with the pole at its center. We consider more generally domains in the plane endowed with a rotationally invariant metric, which include the spherical and the hyperbolic case.

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