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JACK–LAURENT SYMMETRIC FUNCTIONS FOR SPECIAL VALUES OF PARAMETERS

Part of: Groups and algebras in quantum theory Algebraic combinatorics

Published online by Cambridge University Press:  21 July 2015

A. N. SERGEEV  and
A. P. VESELOV
A. N. SERGEEV
Affiliation:
Department of Mathematics, Saratov State University, Astrakhanskaya 83, Saratov 410012, Russia National Research University Higher School of Economics, Laboratory of Mathematical Physics, 20 Myasnitskaya Ulitsa, Moscow 101000, Russia e-mail: SergeevAN@info.sgu.ru
A. P. VESELOV
Affiliation:
Department of Mathematical Sciences, Loughborough University, Loughborough LE11 3TU, UK Moscow State University, Moscow 119899, Russia e-mail: A.P.Veselov@lboro.ac.uk
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Abstract

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We consider the Jack–Laurent symmetric functions for special values of parameters p0=n+k−1m, where k is not rational and m and n are natural numbers. In general, the coefficients of such functions may have poles at these values of p0. The action of the corresponding algebra of quantum Calogero–Moser integrals $\mathcal{D}$(k, p0) on the space of Laurent symmetric functions defines the decomposition into generalised eigenspaces. We construct a basis in each generalised eigenspace as certain linear combinations of the Jack–Laurent symmetric functions, which are regular at p0=n+k−1m, and describe the action of $\mathcal{D}$(k, p0) in these eigenspaces.

MSC classification

Primary: 05E05: Symmetric functions and generalizations
Secondary: 81R12: Relations with integrable systems
Type
Research Article
Information
Glasgow Mathematical Journal , Volume 58 , Issue 3 , September 2016 , pp. 599 - 616
Copyright
Copyright © Glasgow Mathematical Journal Trust 2015 

References

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