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Topological Origin of Non-Hermitian Skin Effects
Nobuyuki Okuma, Kohei Kawabata, Ken Shiozaki +1
A unique feature of non-Hermitian systems is the skin effect, which is the extreme sensitivity to the boundary conditions. Here, we reveal that the skin effect originates from intr…
Variants of the symmetry-based indicator
Ken Shiozaki
The symmetry-based indicator [H. C. Po, A. Vishwanath, H. Watanabe, Nat. Commun. 8, 50 (2017)] is a practical tool to diagnose topological materials in the band theory. In this not…
The classification of surface states of topological insulators and superconductors with magnetic point group symmetry
Ken Shiozaki
We present the exhaustive classification of surface states of topological insulators and superconductors protected by crystallographic magnetic point group symmetry in three spatia…
Anomaly indicator of rotation symmetry in (3+1)D topological order
Ryohei Kobayashi, Ken Shiozaki
We examine (3+1)D topological ordered phases with rotation symmetry. We show that some rotation symmetric (3+1)D topological orders are anomalous, in the sense that they cann…