Action Integrals and discrete series
Action Integrals and discrete series
复制标题
动作积分和离散级数
DOI:
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发表时间:
2011
期刊:
影响因子:
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通讯作者:
A. Viña
中科院分区:
文献类型:
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作者:
A. Viña
Let $G$ be a complex semisimple Lie group and ${G}_{\mathbb R}$ a real form that contains a compact Cartan subgroup $T_{\mathbb R}$. Let $\pi$ be a discrete series representation of $G_{\mathbb R}$. We present geometric interpretations in terms of concepts associated with the manifold $M:=G_{\mathbb R}/T_{\mathbb R}$ of the constant $\pi(g)$, for $g\in Z(G_{\mathbb R})$. For some relevant particular cases, we prove that this constant is the action integral around a loop of Hamiltonian diffeomorphims of $M$. As a consequence of these interpretations, we deduce lower bounds for the cardinal of the fundamental group of some subgroups of ${\rm Diff}(M)$. We also geometrically interpret the values of the infinitesimal character of the differential representation of $\pi$.
DOI:
10.1007/978-3-642-66243-0
发表时间:
1976
期刊:
Energy Sources, Part B: Economics, Planning, and Policy
影响因子:
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作者:
A. Kirillov
通讯作者:
A. Kirillov