A geometric realisation of tempered representations restricted to maximal compact subgroups
A geometric realisation of tempered representations restricted to maximal compact subgroups
复制标题
限制于最大紧子群的调节表示的几何实现
DOI:
10.1007/s00208-020-02006-4
复制
发表时间:
2020
影响因子:
1.4
通讯作者:
Yu, Shilin
中科院分区:
文献类型:
--
作者:
Hochs, Peter;Song, Yanli;Yu, Shilin
LetGbe a connected, linear, real reductive Lie group with compact centre. Let $$K<G$$ K < G be maximal compact. For a tempered representation $$\pi $$ π ofG, we realise the restriction $$\pi |_K$$ π | K as theK-equivariant index of a Dirac operator on a homogeneous space of the formG/H, for a Cartan subgroup $$H<G$$ H < G . (The result in fact applies to every standard representation.) Such a space can be identified with a coadjoint orbit ofG, so that we obtain an explicit version of Kirillov’s orbit method for $$\pi |_K$$ π | K . In a companion paper, we use this realisation of $$\pi |_K$$ π | K to give a geometric expression for the multiplicities of theK-types of $$\pi $$ π , in the spirit of the quantisation commutes with reduction principle. This generalises work by Paradan for the discrete series to arbitrary tempered representations.
登录
查看更多内容
影响因子:
1.7
作者:
E. Meinrenken
通讯作者:
E. Meinrenken
影响因子:
3.1
作者:
Tom H. Koomwinder
通讯作者:
Tom H. Koomwinder
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
M. Braverman
通讯作者:
M. Braverman
影响因子:
1.4
作者:
U. Bunke
通讯作者:
U. Bunke
DOI:
10.1016/j.ansens.2003.03.001
发表时间:
2001
影响因子:
1.9
作者:
P. Paradan
通讯作者:
P. Paradan