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Constructing Representations of the Nonstandardly Deformed Algebra sξ(2)

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Abstract

The generators of the algebra sξ(2), which result from the nonstandard (Jordanian) deformation of the algebra sℓ(2), are realized in the form of finite-difference operators acting in a function space. This allows realizing arbitrary-dimensional representations of sξ(2) in the polynomial space that are in one-to-one correspondence with usual matrices of an appropriate dimension. We discuss using the suggested realization to construct and investigate the universal R-matrix invariant with respect to the action of the algebra sξ(2).

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Karakhanyan, D.R. Constructing Representations of the Nonstandardly Deformed Algebra sξ(2). Theoretical and Mathematical Physics 138, 177–189 (2004). https://doi.org/10.1023/B:TAMP.0000014850.52009.df

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