QUANTUM MECHANISMS ON SPACES WITH FINITE FUNDAMENTAL GROUP

We consider in general terms dynamical systems with finite-dimensional , non-simply connected configuration-spaces. The fundamental group is assumed to be finite. We analyze in full detail those ambiguities in t he quantization procedure that arise from the non-simply connectedness of the classical configuration space. We define the quantum theory on the universal cover but restrict the algebra of observables O to the commutant of the algebra generated by deck-transformations. We apply s tandard superselection principles and construct the corresponding sect ors. We emphasize the relevance of all sectors and not just the abelia n ones.