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Isospectral partners for a complex PT-invariant potential

Anjana Sinha·Rajkumar Roychoudhury
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Abstract

We construct isospectral partner potentials of a complex PT-invariant potential, viz., V(x) = V_1 sech ^2 x - i V_2 sech x tanh x using Darboux's method. Oneset of isospectral potentials are obatined which can be termed 'Satellite potentials', in the sense that they are pf the same form as the original potential. In a particular case, the supersymmetric partner potential has the same spectrum, including the zero energy ground state, a fact which cannot occur in conventional supersymmetric quantum mechanics with real potential. An explicit example of a non-trivial set of isospectral potential is also obtained.

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Anjana Sinha, Rajkumar Roychoudhury. 2002-05-20. Isospectral partners for a complex PT-invariant potential. https://doi.org/10.1016/s0375-9601(02)00736-3

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