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The quantum superalgebra $\mathfrak{osp}_{q}(1|2)$ and a $q$-generalization of the Bannai-Ito polynomials

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arxiv 1501.05602 v1 pith:HV33WMZX submitted 2015-01-22 math.QA math-phmath.CAmath.MP

classification math.QAmath-phmath.CAmath.MP
keywords polynomialsbannai-itomathfrakracahquantumsuperalgebraalgebraaskey-wilson
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abstract

The Racah problem for the quantum superalgebra $\mathfrak{osp}_{q}(1|2)$ is considered. The intermediate Casimir operators are shown to realize a $q$-deformation of the Bannai-Ito algebra. The Racah coefficients of $\mathfrak{osp}_q(1|2)$ are calculated explicitly in terms of basic orthogonal polynomials that $q$-generalize the Bannai-Ito polynomials. The relation between these $q$-deformed Bannai-Ito polynomials and the $q$-Racah/Askey-Wilson polynomials is discussed.

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  1. Higher Rank Relations for the Askey-Wilson and $q$-Bannai-Ito Algebra

    math.QA 2019-08 conditional novelty 6.0 of 10

    New commutation and q-commutation relations are proven for generators of the higher rank Askey-Wilson and q-Bannai-Ito algebras, extending the rank-one defining relations.

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