Tunneling time and Faraday/Kerr effects in $\mathcal{P}\mathcal{T}$-symmetric systems

Abstract

We review the generalization of tunneling time and anomalous behaviour of Faraday and Kerr rotation angles in parity and time ($\mathcal{P}\mathcal{T}$)-symmetric systems. Similarities of two phenomena are discussed, both exhibit a phase transition-like anomalous behaviour in certain range of model parameters. Anomalous behaviour of tunneling time and Faraday/Kerr angles in $\mathcal{P}\mathcal{T}$-symmetric systems is caused by the motion of poles of scattering amplitudes in energy/frequency complex plane.

Match to accepted version, Invited EPL perspective review. arXiv admin note: text overlap with arXiv:2208.13543