Exact Solutions for Time-Dependent Non-Hermitian Oscillators: Classical and Quantum Pictures

Abstract

We associate the stationary harmonic oscillator with time-dependent systems exhibiting non-Hermiticity by means of point transformations. The new systems are exactly solvable, with all-real spectra, and transit to the Hermitian configuration for the appropriate values of the involved parameters. We provide a concrete generalization of the Swanson oscillator that includes the Caldirola–Kanai model as a particular case. Explicit solutions are given in both the classical and quantum pictures.

Keywords

• point transformations
• non-Hermiticity
• time-dependent phenomena
• exact solutions
• Caldirola–Kanai oscillator
• Swanson oscillator