A Note on Howe Duality Correspondence and Isotropy Representations for Unitary Lowest Weight Modules of Mp(n,R)

A Note on Howe Duality Correspondence and Isotropy Representations for Unitary Lowest Weight Modules of Mp(n,R)
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发表时间:
2009
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通讯作者:
J. Hilgert
J. Hilgert
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作者:
J. Hilgert

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利用亚代数群Mp(n,R)的酉最低权模的各向同性表示,给出了约化对偶对(Sp(n,R),O(k))的Howe对偶定理的一个新证明. Howe对偶对应中O(k)的不可约表示通过O(k)的表示限制在较小尺寸的正交群上的分支规则被明确地指定。数学学科分类2000:17B10,22E45,22E46。
We give a new proof of the Howe duality theorem for the reductive dual pair (Sp(n, R), O(k)) by using the isotropy representations for unitary lowest weight modules of the metaplectic group Mp(n, R). The irreducible representations of O(k) appearing in the Howe duality correspondence are specified explicitly by means of the branching rule of the representations of O(k) restricted to orthogonal groups of smaller size. Mathematics Subject Classification 2000: 17B10, 22E45, 22E46.