3 papers
quant-ph2020
Time-dependence in non-Hermitian quantum systems
Thomas Frith
We present a coherent and consistent framework for explicit time-dependence in non-Hermitian quantum mechanics. The area of non-Hermitian quantum mechanics has been growing rapidly…
quant-ph2019
Eternal life of entropy in non-Hermitian quantum systems
Andreas Fring, Thomas Frith
We find a new effect for the behaviour of Von Neumann entropy. For this we derive the framework for describing Von Neumann entropy in non-Hermitian quantum systems and then apply i…
quant-ph2018
Time-dependent metric for the two dimensional, non-Hermitian coupled oscillator
Andreas Fring, Thomas Frith
We provide a time-dependent Dyson map and metric for the two dimensional harmonic oscillator with a non-Hermitian coupling term. This particular time-independent model exhib…