Physics – Mathematical Physics
Scientific paper
2006-07-19
Physics
Mathematical Physics
Scientific paper
10.1088/0305-4470/39/32/S06
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.
Caliceti Emanuela
Cannata Francesco
Graffi Sandro
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