Topological classification of defects in non-Hermitian systems

CH Liu, S Chen - Physical Review B, 2019 - APS
We classify topological defects in non-Hermitian systems with point, real, and imaginary
gaps for all the Bernard-LeClair classes or generalized Bernard-LeClair classes in all …

Topological classification of non-Hermitian systems with reflection symmetry

CH Liu, H Jiang, S Chen - Physical Review B, 2019 - APS
We classify topological phases of non-Hermitian systems in the Altland-Zirnbauer classes
with an additional reflection symmetry in all dimensions. By mapping the non-Hermitian …

Topological correspondence between hermitian and non-hermitian systems: Anomalous dynamics

JY Lee, J Ahn, H Zhou, A Vishwanath - Physical review letters, 2019 - APS
The hallmark of symmetry-protected topological phases is the existence of anomalous
boundary states, which can only be realized with the corresponding bulk system. In this …

Defective edge states and number-anomalous bulk-boundary correspondence in non-Hermitian topological systems

XR Wang, CX Guo, SP Kou - Physical Review B, 2020 - APS
Non-Hermitian topological systems exhibit properties very different from those of their
Hermitian counterparts. An important puzzling issue for non-Hermitian topological systems is …

Symmetry indicator in non-Hermitian systems

K Shiozaki, S Ono - Physical Review B, 2021 - APS
Recently, topological phases in non-Hermitian systems have attracted much attention
because non-Hermiticity sometimes gives rise to unique phases with no Hermitian …

Open and closed boundaries in non-Hermitian topological systems

Z Ozcakmakli Turker, C Yuce - Physical Review A, 2019 - APS
We investigate the boundary condition dependence of non-Hermitian topological systems.
We consider a complex extension of the Su-Schrieffer-Heeger model. We discuss that …

Dislocation non-Hermitian skin effect

F Schindler, A Prem - Physical Review B, 2021 - APS
We demonstrate that crystal defects can act as a probe of intrinsic non-Hermitian topology. In
particular, in point-gapped systems with periodic boundary conditions, a pair of dislocations …

Non-Hermitian skin effect of dislocations and its topological origin

BA Bhargava, IC Fulga, J Van Den Brink… - Physical Review B, 2021 - APS
We demonstrate that dislocations in two-dimensional non-Hermitian systems can give rise to
density accumulation or depletion through the localization of an extensive number of states …

Homotopy characterization of non-Hermitian Hamiltonians

CC Wojcik, XQ Sun, T Bzdušek, S Fan - Physical Review B, 2020 - APS
We revisit the problem of classifying topological band structures in non-Hermitian systems.
Recently, a solution has been proposed, which is based on redefining the notion of energy …

Fate of exceptional points under interactions: Reduction of topological classifications

T Yoshida, Y Hatsugai - Physical Review B, 2023 - APS
Despite recent extensive studies of the non-Hermitian topology, understanding interaction
effects is left as a crucial question. In this paper, we address interaction effects on …