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Nilpotent Orbits and Whittaker Functions for Derived Functor Modules of Sp(2, ℝ)

Published online by Cambridge University Press:  20 November 2018

Takuya Miyazaki
Takuya Miyazaki*
Affiliation:
Department of Mathematics, Keio University, 3-14-1 Hiyoshi, Kouhoku, Yokohama 223-8522, Japan, e-mail: miyazaki@math.keio.ac.jp
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Abstract

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We study the moderate growth generalized Whittaker functions, associated to a unitary character $\psi $ of a unipotent subgroup, for the non-tempered cohomological representation of $G\,=\,\text{Sp}\left( 2,\,\mathbb{R} \right)$. Through an explicit calculation of a holonomic system which characterizes these functions we observe that their existence is determined by the including relation between the real nilpotent coadjoint $G$-orbit of $\psi $ in $\mathfrak{g}_{\mathbb{R}}^{*}$ and the asymptotic support of the cohomological representation.

Keywords

22E4622E30
Type
Research Article
Information
Canadian Journal of Mathematics , Volume 54 , Issue 4 , 01 August 2002 , pp. 769 - 794
Copyright
Copyright © Canadian Mathematical Society 2002

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