The Orbit Method and Character Formulas for Tempered representations of a Nonconnected Reductive Real Algebraic Group

Fuente: arXiv
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Main Author: Ducloux, Jean-Yves
Format: Preprint
Published: 2026
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author Ducloux, Jean-Yves
author_facet Ducloux, Jean-Yves
contents Let G be a possibly disconnected reductive real Lie group. In this paper, I parametrize the set of irreductible tempered characters of G. I then describe these characters using certain ``Kirillov's formulas,'' based on the descent method near each elliptic element in G. If G is linear and connected, the parameters I use are ``final basic'' parameters in the sense of Knapp and Zuckerman.
format Preprint
id arxiv_https___arxiv_org_abs_2601_20384
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle The Orbit Method and Character Formulas for Tempered representations of a Nonconnected Reductive Real Algebraic Group
Ducloux, Jean-Yves
Representation Theory
Let G be a possibly disconnected reductive real Lie group. In this paper, I parametrize the set of irreductible tempered characters of G. I then describe these characters using certain ``Kirillov's formulas,'' based on the descent method near each elliptic element in G. If G is linear and connected, the parameters I use are ``final basic'' parameters in the sense of Knapp and Zuckerman.
title The Orbit Method and Character Formulas for Tempered representations of a Nonconnected Reductive Real Algebraic Group
topic Representation Theory
url https://arxiv.org/abs/2601.20384