MODERN PHYSICS LETTERS A, cilt.6, sa.19, ss.1797-1806, 1991 (SCI-Expanded)
An integrable model can be interpreted as a constrained Hamiltonian system by treating constants of motion of the former as constraints of the latter. The new constrained Hamiltonian system, when we deal with a finite initial phase space, after quantization does not have local excitations if operator ordering does not cause anomalies. So that it is a topological quantum theory. As an example, operator quantization of the Toda lattice where the ordering is important, is studied.