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On q-analogues of the quantum harmonic oscillator and the quantum group $$SU(2)_ q$$. (English) Zbl 0722.17009
From the introduction: “Here we wish to generalize to $$SU(2)_ q$$, the simplest quantum group, the q-deformation of the Lie algebra of SU(2), Schwinger’s approach [J. Schwinger, On angular momentum’, in ‘Quantum Theory of Angular Momentum (ed. by L. C. Biedenharn and H. van Dam), Academic Press, 1965, p. 229-279] to the quantum theory of angular momentum. To achieve this, a q-deformation of the quantum harmonic oscillator formalism has to be developed. Much of the present paper is devoted to this task. Then the algebra of $$SU(2)_ q$$, and its representations can be realized in terms of the variables of two independent q-deformed harmonic oscillators. Our results involve explicit coordinate of wavefunctions representations as well as abstract Hilbert space versions.”

##### MSC:
 17B37 Quantum groups (quantized enveloping algebras) and related deformations 81R50 Quantum groups and related algebraic methods applied to problems in quantum theory 53D50 Geometric quantization
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