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Bent Ørsted

Generalized Laguerre functions and Whittaker vectors for holomorphic discrete series

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We study degenerate Whittaker vectors in scalar type holomorphic discrete series representations of tube type Hermitian Lie groups and their analytic continuation. In four different realizations, the bounded domain picture, the tube domain picture, the $L^2$-model and the Fock model, we find their explicit $K$-type expansions. The coefficients are expressed in terms of the generalized Laguerre functions on the corresponding symmetric cone, and we relate the $K$-type expansions to the formula for the generating function of the Laguerre polynomials and to their recurrence relations.
Original languageEnglish
JournalJournal of Lie Theory
Number of pages19
ISSN0949-5932
Publication statusAccepted/In press - 2022

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