Topological enhancement of nonnormality in non-Hermitian skin effects
Topological enhancement of nonnormality in non-Hermitian skin effects
This paper introduces scalar measures that adequately characterize the non-Hermitian skin effects under open boundary condition. Using these measures, the authors reveal that the topological properties of the non-Hermitian skin effect give a macroscopic enhancement of non-normality under open boundary condition. The topological enhancement of non-normality governs the perturbation sensitivity …