F. Calogero et Jf. Vandiejen, SOLVABLE QUANTUM VERSION OF AN INTEGRABLE HAMILTONIAN SYSTEM, Journal of mathematical physics, 37(9), 1996, pp. 4243-4251
Solvable quantum versions of the classical dynamical system characteri
zed by the Hamiltonian H = Sigma(j,k=1)(n) PjPk[lambda + mu cos(q(j) -
q(k))] are presented. The eigenvalues of the quantum Hamiltonians are
exhibited, as well as the corresponding eigenfunctions. (C) 1996 Amer
ican Institute of Physics.