Abstract
Standard canonical quantum mechanics makes much use of operators whose spectra cover the set of real numbers, such as the coordinates of space, or the values of the momenta. Discrete quantum mechanics uses only strictly discrete operators. We show how one can transform systems with pairs of integer-valued, commuting operators \(P_i\) and \(Q_i\), to systems with real-valued canonical coordinates \(q_i\) and their associated momentum operators \(p_i\). The discrete system could be entirely deterministic while the corresponding (p, q) system could still be typically quantum mechanical.
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