Generalization of parity-time and partial parity-time symmetry

Abstract

We show that parity-time and partial parity-time symmetries are particular cases of antiunitary symmetry. This point is illustrated by means of a recently discussed system of non-Hermitian coupled harmonic oscillators that also exhibits other types of antiunitary symmetries. We also show that a combination of group and perturbation theory is a useful tool for predicting broken antiunitary symmetry.

Cited by in corpus (2)

• On a class of non-Hermitian Hamiltonians with tridiagonal matrix representation
• On a model for rotational tunneling with a $C_6$-space-time symetric analog