NOVEL INTEGRABLE SPIN-PARTICLE MODELS FROM GAUGE-THEORIES ON A CYLINDER

We find and solve a large class of integrable dynamical systems which includes Calogero-Sutherland models and various novel generalizations thereof. In general they describe N interacting particles moving on a circle and coupled to an arbitrary number, m, of su(N) spin degrees of freedom with interactions which depend on arbitrary real parameters x (j), j = 1,2,...,m. We derive these models from SU(N) Yang-Mills gauge theory coupled to non-dynamic matter and on spacetime which is a cyli nder. This relation to gauge theories is used to prove integrability, to construct conservation laws, and solve these models. (C) 1998 Elsev ier Science B.V. All rights reserved.