A very simple method is devised to derive a (strictly) isospectral extension of the Morse potential. Furthermore, point canonical transformations are used to transform the latter into quasi-exactly solvable extensions of the radial oscillator and the Coulomb potentials.

中文翻译：

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重新探究莫尔斯电势的等光谱扩展

设计了一种非常简单的方法来推导莫尔斯电势的（严格）等光谱扩展。此外，使用点正则变换将后者转换为径向振荡器和库仑势的准精确可解扩展。