Laurent polynomial solutions of the boundary quantum Knizhnik--Zamolodchikov equation
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boundaryequationknizhnik--zamolodchikovlaurentpolynomialquantumsolutionsbases
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We construct Laurent polynomial solutions of the boundary quantum Knizhnik--Zamolodchikov equation for $U_{q}(\widehat{\mathfrak{sl}}_{2})$ on the parabolic Kazhdan--Lusztig bases. They are characterized by non-symmetric Koornwinder polynomials with the specialized parameters. As a special case, we obtain the solution of the minimal degree.
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