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PT-symmetric non-polynomial oscillators and hyperbolic potential with two known real eigenvalues in a SUSY framework

B. Bagchi·C. Quesne
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Abstract

Extending the supersymmetric method proposed by Tkachuk to the complex domain, we obtain general expressions for superpotentials allowing generation of quasi-exactly solvable PT-symmetric potentials with two known real eigenvalues (the ground state and first-excited state energies). We construct examples, namely those of complexified non-polynomial oscillators and of a complexified hyperbolic potential, to demonstrate how our scheme works in practice. For the former we provide a connection with the sl(2) method, illustrating the comparative advantages of the supersymmetric one.

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B. Bagchi, C. Quesne. 2002-01-16. PT-symmetric non-polynomial oscillators and hyperbolic potential with two known real eigenvalues in a SUSY framework. https://doi.org/10.1142/s0217732302006734

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