Geodesic
Matrix factorization for solutions of the Yang–Baxter equation
Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 23, Tome 433 (2015), pp. 156-185 Cet article a éte moissonné depuis la source Math-Net.Ru

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We study solutions of the Yang–Baxter equation on a tensor product of an arbitrary finite-dimensional and an arbitrary infinite-dimensional representations of the rank one symmetry algebra. We consider the cases of the Lie algebra $sl_2$, the modular double (trigonometric deformation) and the Sklyanin algebra (elliptic deformation). The solutions are matrices with operator entries. The matrix elements are differential operators in the case of $sl_2$, finite-difference operators with trigonometric coefficients in the case of the modular double or finite-difference operators with coefficients constructed out of Jacobi theta functions in the case of the Sklyanin algebra. We find a new factorized form of the rational, trigonometric, and elliptic solutions, which drastically simplifies them. We show that they are products of several simply organized matrices and obtain for them explicit formulae. 
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S. E. Derkachov; D. I. Chicherin. Matrix factorization for solutions of the Yang–Baxter equation. Zapiski Nauchnykh Seminarov POMI, Questions of quantum field theory and statistical physics. Part 23, Tome 433 (2015), pp. 156-185. http://geodesic.mathdoc.fr/item/ZNSL_2015_433_a7/

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