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Whittaker functions on quantum groups and q-deformed Toda operators

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arxiv math/9901053 v1 pith:ETPFAKOA submitted 1999-01-13 math.QA

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keywords quantumtodawhittakeraffinealgebrasfunctionsgroupshamiltonians
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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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Orthogonality of spin $q$-Whittaker polynomials

    math.CO 2025-02 conditional novelty 7.0 of 10

    Inhomogeneous spin q-Whittaker polynomials are orthogonal under an explicit torus scalar product, giving a basis of symmetric polynomials.

  2. $q$-Deformed Discrete Whittaker Processes

    math.PR 2025-09 conditional novelty 6.0 of 10

    For every q, there is a Markov process on reverse plane partitions whose projection to any skew shape is again a Markov process, giving a q-deformed analogue of O'Connell's discrete Whittaker processes.

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