Alexandre Eremenko, Andrei Gabrielov
We describe the real quasi-exactly solvable spectral locus of the PT-symmetric quartic using the Nevanlinna parametrization.
http://arxiv.org/abs/1104.4980
Mathematical Physics (math-ph)
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Quasi-exactly solvable quartic: real algebraic spectral locus
Apr 27, ’11
10:57 PM