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Inverse spectral results for non-abelian group actions
Indagationes Mathematicae ( IF 0.5 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.indag.2020.05.004
Victor Guillemin , Zuoqin Wang

In this paper we will extend to non-abelian groups inverse spectral results, proved by us in an earlier paper, for compact abelian groups, i.e. tori. More precisely, Let $\mathsf G$ be a compact Lie group acting isometrically on a compact Riemannian manifold $X$. We will show that for the Schr\"odinger operator $-\hbar^2 \Delta+V$ with $V \in C^\infty(X)^{\mathsf G}$, the potential function $V$ is, in some interesting examples, determined by the $\mathsf G$-equivariant spectrum. The key ingredient in this proof is a generalized Legendrian relation between the Lagrangian manifolds $\mathrm{Graph}(dV)$ and $\mathrm{Graph}(dF)$, where $F$ is a spectral invariant defined on an open subset of the positive Weyl chamber.

中文翻译:

非阿贝尔群作用的逆谱结果

在这篇论文中,我们将扩展到非阿贝尔群的逆谱结果,我们在之前的论文中证明了,对于紧凑的阿贝尔群,即 tori。更准确地说,令 $\mathsf G$ 是一个紧致李群,等距作用于紧致黎曼流形 $X$。我们将证明对于 Schr\"odinger 算子 $-\hbar^2 \Delta+V$ 和 $V \in C^\infty(X)^{\mathsf G}$,势函数 $V$ 是,在一些有趣的例子中,由 $\mathsf G$-等变谱决定。这个证明的关键要素是拉格朗日流形 $\mathrm{Graph}(dV)$ 和 $\mathrm{Graph}( dF)$,其中 $F$ 是定义在正外尔室的开放子集上的谱不变量。
更新日期:2021-02-01
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