Two-parametric PT-symmetric quartic family
arXiv:1105.2742 · doi:10.1088/1751-8113/45/17/175206
Abstract
We describe a parametrization of the real spectral locus of the two-parametric family of PT-symmetric quartic oscillators. For this family, we find a parameter region where all eigenvalues are real, extending the results of Dorey, Dunning, Tateo and Shin.
23 pages, 15 figures
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