Harmonic oscillator with nonzero minimal uncertainties in both position and momentum in a SUSYQM framework

Details Harmonic oscillator with nonzero minimal uncertainties in both position and momentum in a SUSYQM framework Harmonic oscillator with nonzero minimal uncertainties in both position and momentum in a SUSYQM framework

2003-06-18

arxiv.org/abs/math-ph/0306047v2

J.Phys.A36:10373-10391,2003

Physics

Mathematical Physics

LaTeX, 24 pages, no figure, minor changes, additional references, final version to be published in JPA

Scientific paper

10.1088/0305-4470/36/41/009

In the context of a two-parameter $(\alpha, \beta)$ deformation of the canonical commutation relation leading to nonzero minimal uncertainties in both position and momentum, the harmonic oscillator spectrum and eigenvectors are determined by using techniques of supersymmetric quantum mechanics combined with shape invariance under parameter scaling. The resulting supersymmetric partner Hamiltonians correspond to different masses and frequencies. The exponential spectrum is proved to reduce to a previously found quadratic spectrum whenever one of the parameters $\alpha$, $\beta$ vanishes, in which case shape invariance under parameter translation occurs. In the special case where $\alpha = \beta \ne 0$, the oscillator Hamiltonian is shown to coincide with that of the q-deformed oscillator with $q > 1$ and its eigenvectors are therefore $n$-$q$-boson states. In the general case where $0 \ne \alpha \ne \beta \ne 0$, the eigenvectors are constructed as linear combinations of $n$-$q$-boson states by resorting to a Bargmann representation of the latter and to $q$-differential calculus. They are finally expressed in terms of a $q$-exponential and little $q$-Jacobi polynomials.

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