A family of complex potentials with real spectrum

Abstract

We consider a two-parameter non hermitean quantum-mechanical hamiltonian that is invariant under the combined effects of parity and time reversal transformation. Numerical investigation shows that for some values of the potential parameters the hamiltonian operator supports real eigenvalues and localized eigenfunctions. In contrast with other PT symmetric models, which require special integration paths in the complex plane, our model is integrable along a line parallel to the real axis.

Six figures and four tables

References in corpus (3)

• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• Schrödinger operators with complex potential but real spectrum
• Quasi-exactly solvable quartic potential

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