Eigenvalues collision for PT-symmetric waveguide

Abstract

We consider a model of planar PT-symmetric waveguide and study the phenomenon of the eigenvalues collision under the perturbation of boundary conditions. This phenomenon was discovered numerically in previous works. The main result of this work is an analytic explanation of this phenomenon.

References in corpus (1)

• Discrete spectrum of thin PT-symmetric waveguide

Cited by in corpus (1)

• Bound states emerging from below the continuum in a solvable PT-symmetric discrete Schroedinger equation