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Continuous crystal and Duistermaat-Heckman measure for Coxeter groups
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Biane, Philippe, Bougerol, Philippe and O'Connell, Neil (2009) Continuous crystal and Duistermaat-Heckman measure for Coxeter groups. Advances in Mathematics, Vol.221 (No.5). pp. 1522-1583. doi:10.1016/j.aim.2009.02.016 ISSN 0001-8708.
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Official URL: http://dx.doi.org/10.1016/j.aim.2009.02.016
Abstract
We introduce a notion of continuous crystal analogous, for general Coxeter groups, to the combinatorial crystals introduced by Kashiwara in representation theory of Lie algebras. We explore their main properties in the case of finite Coxeter groups, where we use a generalization of the Littelmann path model to show the existence of the crystals. We introduce a remarkable measure, analogous to the Duistermaat-Heckman measure, which we interpret in terms of Brownian motion. We also show that the Littelmann path operators can be derived from simple considerations on Sturm-Liouville equations. (C) 2009 Elsevier Inc. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QA Mathematics | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Mathematics | ||||
Journal or Publication Title: | Advances in Mathematics | ||||
Publisher: | Academic Press | ||||
ISSN: | 0001-8708 | ||||
Official Date: | 1 August 2009 | ||||
Dates: |
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Volume: | Vol.221 | ||||
Number: | No.5 | ||||
Number of Pages: | 62 | ||||
Page Range: | pp. 1522-1583 | ||||
DOI: | 10.1016/j.aim.2009.02.016 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Science Foundation Ireland | ||||
Grant number: | SFI04/RP1/1512 |
Data sourced from Thomson Reuters' Web of Knowledge
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