J. Tolar et G. Chadzitaskos, QUANTIZATION ON Z(M) AND COHERENT STATES OVER Z(M)XZ(M), Journal of physics. A, mathematical and general, 30(7), 1997, pp. 2509-2517
Finite-dimensional quantum mechanics (quantum mechanics on finite disc
rete Space Z(M)-the cyclic group of order M) is developed further: in
analogy with the usual harmonic oscillator coherent states, an overcom
plete family of coherent states over the phase space Z(M) x Z(M) is co
nstructed and their properties are determined.