%0 Journal Article
%T Two-parametric PT-symmetric quartic family
%A Alexandre Eremenko
%A Andrei Gabrielov
%J Mathematics
%D 2011
%I arXiv
%R 10.1088/1751-8113/45/17/175206
%X 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.
%U http://arxiv.org/abs/1105.2742v2