Calogero–Moser Integrable Particles
Lax pair integrability & inverse-square repulsion on the line
The Calogero–Moser system H = Σ pi²/2 + g²Σi≠j1/(xi−xj)² + ω²Σxi²/2
is exactly integrable via the Lax pair Lij = piδij − ig(1−δij)/(xi−xj).
The N eigenvalues of L are conserved quantities (Tr Lk = const) guaranteeing non-crossing.