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Whittaker functions on quantum groups and q-deformed Toda operators

Pavel Etingof
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Abstract

In this paper we q-deform a construction of Kazhdan and Kostant from 1970's which produces quantum Toda Hamiltonians by considering the action of Casimirs of a simple Lie algebra on Whittaker functions on the corresponding Lie group. We also give the affine analog of this generalization. This is done by extending the notion of a Whittaker function to quantum groups and quantum affine algebras. We compute the q-deformed Toda Hamiltonians for Lie algebras of type A and show that they coincide with those known in the theory of integrable systems.

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BibTeXRIS

Pavel Etingof. 1999-01-13. Whittaker functions on quantum groups and q-deformed Toda operators. https://arxiv.org/abs/math/9901053

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