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arXiv 1104.2234math.RTmath-phmath.MP
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埃尔米特李群的半有界表示

Semibounded representations of hermitian Lie groups

Karl-Hermann Neeb

摘要:

一个可能是无限维的李群$G$的酉表示称为半有界的,如果来自导出表示的相应算子$i\ddπ(x)$在$G$的李代数$\g$的某个非空开子集上从上一致有界。埃尔米特李群是埃尔米特希尔伯特对称空间的自同构群的单位连通区的中心扩张。本文对无限维不可约对称空间所对应的埃尔米特李群的不可约半有界酉表示进行了分类。这些群有三种基本上不同的类型:对应于负弯曲空间(对称希尔伯特域)的群,作用于希尔伯特域的环上的酉群,如限制的格拉斯曼群,以及平坦空间的运动群。

英文摘要:

A unitary representation of a, possibly infinite dimensional, Lie group $G$ is called semibounded if the corresponding operators $i\ddπ(x)$ from the derived representation are uniformly bounded from above on some non-empty open subset of the Lie algebra $\g$ of $G$. A hermitian Lie group is a central extension of the identity component of the automorphism group of a hermitian Hilbert symmetric space. In the present paper we classify the irreducible semibounded unitary representations of hermitian Lie groups corresponding to infinite dimensional irreducible symmetric spaces. These groups come in three essentially different types: those corresponding to negatively curved spaces (the symmetric Hilbert domains), the unitary groups acting on the duals of Hilbert domains, such as the restricted Graßmannian, and the motion groups of flat spaces.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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