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Rationally-extended radial oscillators and Laguerre exceptional orthogonal polynomials in kth-order SUSYQM

Authors
  • Quesne, C.
Type
Published Article
Publication Date
Dec 29, 2011
Submission Date
Oct 18, 2011
Identifiers
DOI: 10.1142/S0217751X11054942
Source
arXiv
License
Yellow
External links

Abstract

A previous study of exactly solvable rationally-extended radial oscillator potentials and corresponding Laguerre exceptional orthogonal polynomials carried out in second-order supersymmetric quantum mechanics is extended to $k$th-order one. The polynomial appearing in the potential denominator and its degree are determined. The first-order differential relations allowing one to obtain the associated exceptional orthogonal polynomials from those arising in a ($k-1$)th-order analysis are established. Some nontrivial identities connecting products of Laguerre polynomials are derived from shape invariance.

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