Exactly solvable discrete quantum mechanical systems and multi-indexed orthogonal polynomials of the continuous Hahn and Meixner–Pollaczek types

DOI10.1093/PTEP/PTZ124zbMATH Open1477.81044arXiv1907.12218OpenAlexW3100358824WikidataQ127105963 ScholiaQ127105963MaRDI QIDQ5156234

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Publication date: 15 October 2021

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Abstract: We present new exactly solvable systems of the discrete quantum mechanics with pure imaginary shifts, whose physical range of the coordinate is the whole real line. These systems are shape invariant and their eigenfunctions are described by the multi-indexed continuous Hahn and Meixner-Pollaczek orthogonal polynomials. The set of degrees of these multi-indexed polynomials are $el{l}_{mathcalD},el{l}_{mathcalD}+1,el{l}_{mathcalD}+2,ldots$, where $el{l}_{mathcalD}$ is an even positive integer ($mathcalD$ : a multi-index set), but they form a complete set of orthogonal basis in the weighted Hilbert space.

Full work available at URL: https://arxiv.org/abs/1907.12218

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