For the classical elliptic Calogero system in an external harmonic potential it is shown that the Lax operator L+L − possesses a classical r-matrix structure. The relation of the r-matrix and the Yang-Baxter equation involving another dynamical matrix are discussed.
R-matrix valued Lax pair for elliptic Calogero–Inozemtsev system and associative Yang–Baxter equations of BCn type
R-matrices for the n=2,3 Elliptic Calogero-Moser Models
The classical (dynamical) R-matrices for the 2- and 3-body Calogero-Moser models with elliptic potentials are given. The 3-body case has an interesting nontrivial structure that goes beyond the known ansatz for momentum independent R-matrices. The R-matrices presented include the dynamical R-matrices of Avan and Talon as degenerate cases of the elliptic potential.