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arXiv · 2110.13913

Quantization of rationally deformed Morse potentials by Wronskian transforms of Romanovski-Bessel polynomials

Gregory Natanson
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Abstract

The paper advances the suggestion by Odake and Sasaki to re-write eigenfunctions of rationally deformed Morse potentials in terms of Wronskians of Laguerre polynomials in the reciprocal argument. It is shown that the constructed quasi-rational seed solutions of the Schrodinger equation with the Morse potential are formed by generalized Bessel polynomials with degree-independent indexes. As a new achievement we can point to the construction of the Darboux-Crum net of isospectral rational potentials using Wronskians of generalized Bessel polynomials with no positive zeros. It was then proved that any solvable rational Darboux-Crum transform of the Morse potential can be re-expressed in terms of Wronskians of the latter polynomials accompanied by juxtaposed pairs of Romanovski-Bessel polynomials.

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Gregory Natanson. 2021-10-25. Quantization of rationally deformed Morse potentials by Wronskian transforms of Romanovski-Bessel polynomials. https://doi.org/10.14311/ap.2022.62.0100

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