Complex hypergeometric functions and integrable many-body problems

preprint2022arXivOpen access

Abstract

General reduction of the elliptic hypergeometric equation to the level of complex hypergeometric functions is described. The derived equation is generalized to the Hamiltonian eigenvalue problem for new rational integrable NN-body systems emerging from particular degenerations of the elliptic Ruijsenaars and van Diejen models.

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