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Pisot \(q\)-coherent states quantization of the harmonic oscillator. (English) Zbl 1266.81111

Summary: We revisit the quantized version of the harmonic oscillator obtained through a \(q\)-dependent family of coherent states. For each \(q\), \(0<q<1\), these normalized states form an overcomplete set that resolves the unity with respect to an explicit measure. We restrict our study to the case in which \(q^{-1}\) is a quadratic unit Pisot number, since then the \(q\)-deformed integers form Fibonacci-like sequences of integers. We then examine the main characteristics of the corresponding quantum oscillator: localization in the configuration and in the phase spaces, angle operator, probability distributions and related statistical features, time evolution and semi-classical phase space trajectories.

MSC:

81R50 Quantum groups and related algebraic methods applied to problems in quantum theory
81R30 Coherent states
81S05 Commutation relations and statistics as related to quantum mechanics (general)
17B37 Quantum groups (quantized enveloping algebras) and related deformations