An infinite family of Dunkl type superintegrable curved Hamiltonians through coalgebra symmetry: Oscillator and Kepler-Coulomb models

Abstract

This work aims to bridge the gap between Dunkl superintegrable systems and the coalgebra symmetry approach to superintegrability, and subsequently to recover known models and construct new ones. In particular, an infinite family of $N$-dimensional quasi-maximally superintegrable quantum systems with reflections, sharing the same set of $2N-3$ quantum integrals, is introduced. The result is achieved by introducing a novel differential-difference realization of $\mathfrak{sl}(2,\mathbb{R})$ and then applying the coalgebra formalism. Several well-known maximally superintegrable models with reflections appear as particular cases of this general family, among them, the celebrated Dunkl oscillator and the Dunkl-Kepler-Coulomb system. Furthermore, restricting to the case of "hidden" quantum quadratic symmetries, maximally superintegrable curved oscillator and Kepler-Coulomb Hamiltonians of Dunkl type, sharing the same underlying $\mathfrak{sl}(2,\mathbb{R})$ coalgebra symmetry, are presented. Namely, the Dunkl oscillator and the Dunkl-Kepler-Coulomb system on the $N$-sphere and hyperbolic space together with two models which can be interpreted as a one-parameter superintegrable deformation of the Dunkl oscillator and the Dunkl-Kepler-Coulomb system on non-constant curvature spaces. In addition, maximally superintegrable generalizations of these models, involving non-central potentials, are also derived on flat and curved spaces. For all specific systems, at least an additional quantum integral is explicitly provided, which is related to the Dunkl version of a (curved) Demkov-Fradkin tensor or a Laplace-Runge-Lenz vector.

arXiv comment34 pages

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Cited by in corpus (1)

• Dynamical symmetries of the Calogero-Coulomb model