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arXiv 1111.6406math.RT
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秩1半单李群的酉表示限制中的离散分支

Discrete components in restriction of unitary representations of rank one semisimple Lie groups

Genkai Zhang

摘要:

我们考虑秩为1的半单李群$G=SO(n, 1; \mathbb K)$,$\mathbb K=\br, \bc, \bh$的球面主级数表示.在$\mathbb R^+$上的一个区间中,存在$G$对$ν$的酉化表示$π_ν$族,即所谓的互补级数,并且$G$对$ν$的子商或子表示是负整数。本文考虑了$(π_ν, G)$在子群$H=SO(n-1, 1; \mathbb K)$下的限制.我们证明了离散元件的出现。对例外李群$F_{4(-20)}$及其子群$Spin(8,1)$也得到了相应的结果.

英文摘要:

We consider spherical principal series representations of the semisimple Lie group of rank one $G=SO(n, 1; \mathbb K)$, $\mathbb K=\br, \bc, \bh$. There is a family of unitarizable representations $π_ν$ of $G$ for $ν$ in an interval on $\mathbb R^+$, the so-called complementary series, and subquotient or subrepresentations of $G$ for $ν$ being negative integers. We consider the restriction of $(π_ν, G)$ under the subgroup $H=SO(n-1, 1; \mathbb K)$. We prove the appearing of discrete components. The corresponding results for the exceptional Lie group $F_{4(-20)}$ and its subgroup $Spin(8,1)$ are also obtained.

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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