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math-ph2025★ 2 cited
Complex rational Ruijsenaars model. The two-particle case
N. M. Belousov, G. A. Sarkissian, V. P. Spiridonov
We consider a complex rational degeneration of the hyperbolic Ruijsenaars model emerging in the limit (or in CFT) and investigate in detail the tw…
math-ph2021★ 13 cited
Complex hypergeometric functions and integrable many-body problems
G. A. Sarkissian, V. P. Spiridonov
General reduction of the elliptic hypergeometric equation to the level of complex hypergeometric functions is described. The derived equation is generalized to the Hamiltonian eige…