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Confluences of the Painlevé equations, Cherednik algebras and q-Askey scheme

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posted on 06.05.2016 by Marta Mazzocco
In this paper we produce seven new algebras as confluences of the Cherednik algebra of type Č1C1 and we characterise their spherical–subalgebras. The limit of the spherical sub-algebra of the Cherednik algebra of type Č1C1 is the monodromy manifold of the Painlevé VI equation [35]. Here we prove that by considering the limits of the spherical sub-algebras of our new confluent algebras, one obtains the monodromy manifolds of all other Painlevé differential equations. Moreover, we introduce confluent versions of the Zhedanov algebra and prove that each of them (quotiented by their Casimir) is isomorphic to the corresponding spherical sub-algebra of our new confluent Cherednik algebras. We show that in the basic representation our confluent Zhedanov algebras act as symmetries of certain elements of the q-Askey scheme, thus setting a stepping stone towards the solution of the open problem of finding the corresponding quantum algebra for each element of the q-Askey scheme. These results establish a new link between the theory of the Painlevé equations and the theory of the q-Askey scheme making a step towards the construction of a representation theoretic approach for the Painlevé theory.

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Nonlinearity

Volume

29

Issue

9

Pages

2565 - 2608

Citation

MAZZOCCO, M., 2016. Confluences of the Painlevé equations, Cherednik algebras and q-Askey scheme. Nonlinearity, 29 (9), pp. 2565-2608.

Publisher

© IOP Publishing Ltd & London Mathematical Society

Version

AM (Accepted Manuscript)

Acceptance date

21/06/2016

Publication date

2016-07-13

Notes

This is an author-created, un-copyedited version of an article published in Nonlinearity. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/0951-7715/29/9/2565.

ISSN

0951-7715

eISSN

1361-6544

Language

en

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