Spontaneous breakdown of PT symmetry in the solvable square-well model

Miloslav Znojil, Géza Lévai

Research output: Contribution to journalArticle

60 Citations (Scopus)


Apparently, the energy levels merge and disappear in many PT symmetric models. This interpretation is incorrect: In square-well model we demonstrate how the doublets of states in question continue to exist at complex conjugate energies in the strongly non-Hermitian regime.

Original languageEnglish
Pages (from-to)2273-2280
Number of pages8
JournalModern Physics Letters A
Issue number35
Publication statusPublished - Nov 20 2001



  • Explicit wave functions
  • Numerical construction of critical couplings
  • PT symmetric square well
  • Schrödinger equation
  • Spontaneously broken symmetry
  • Strongly non-Hermitian regime

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • Physics and Astronomy(all)

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