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Perturbation theory of PT-symmetric Hamiltonians

E. Caliceti·F. Cannata·S. Graffi
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Abstract

In the framework of perturbation theory the reality of the perturbed eigenvalues of a class of $\PT$symmetric Hamiltonians is proved using stability techniques. We apply this method to $\PT$symmetric unperturbed Hamiltonians perturbed by $\PT$symmetric additional interactions.

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E. Caliceti, F. Cannata, S. Graffi. 2006-07-19. Perturbation theory of PT-symmetric Hamiltonians. https://doi.org/10.1088/0305-4470%2F39%2F32%2Fs06

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