Abstract:
Schlesinger transformations are discrete monodromy preserving symmetry transformations of a meromorphic connection which shift by integers the eigenvalues of its residues. We study Schlesinger transformations for twisted -valued connections on the torus. A universal construction is presented which gives the elementary two-point transformations in terms of Belavin's elliptic quantum R-matrix. In particular, the role of the quantum deformation parameter is taken by the difference of the two poles whose residue eigenvalues are shifted. Elementary one-point transformations (acting on the residue eigenvalues at a single pole) are constructed in terms of the classical elliptic r-matrix.
The action of these transformations on the τ-function of the system may completely be integrated and we obtain explicit expressions in terms of the parameters of the connection. In the limit of a rational R-matrix, our construction and the τ-quotients reduce to the classical results of Jimbo and Miwa in the complex plane.
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Received: 19 December 2001 / Accepted: 20 May 2002 Published online: 14 October 2002
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Manojlović, N., Samtleben, H. Schlesinger Transformations and Quantum R-Matrices. Commun. Math. Phys. 230, 517–537 (2002). https://doi.org/10.1007/s00220-002-0716-1
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DOI: https://doi.org/10.1007/s00220-002-0716-1