Can I read Extremely broken generalized $\mathcal{PT}$ symmetry on EtoBox?

Extremely broken generalized $\mathcal{PT}$ symmetry by Fernández, Francisco M. is a scholarly article available to read on EtoBox.

What is Extremely broken generalized $\mathcal{PT}$ symmetry about?

We discuss some simple H\"uckel-like matrix representations of non-Hermitian operators with antiunitary symmetries that include generalized $\mathcal{PT}$ (parity transformation followed by time-reversal) symmetry. One of them exhibits extremely broken antiunitary symmetry (complex eigenvalues for all nontrivial values of the model parameter) because of the degeneracy of the operator in the Hermitian limit. These examples illustrate the effect of point-group symmetry on the spectrum of the non-Hermitian operators. We construct the necessary unitary matrices by means of simple graphical representations of the non-Hermitian operators.

Author

Fernández, Francisco M.

Published

2022

Language

EN