On a model for rotational tunneling with a -space-time symetric analog
arXiv:1805.10701
Abstract
We analyze the simple model of a rigid rotor with symmetry and show that the use of parity simplifies considerably the calculation of its eigenvalues. We also consider a non-Hermitian space-time-symmetric counterpart that exhibits real eigenvalues and determine the exceptional point at which the antiunitary symmetry is broken.