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Correspondence between Winding Numbers and Skin Modes in Non-Hermitian Systems

2020; American Physical Society; Volume: 125; Issue: 12 Linguagem: Inglês

10.1103/physrevlett.125.126402

1092-0145

Kai Zhang, Zhesen Yang, Chen Fang,

Noncommutative and Quantum Gravity Theories

An exact bulk-edge correspondence between winding (in the bulk) and skin modes (on the surface) in non-Hermitian systems establishes that a nonzero winding number in the bulk leads to skin effect on the edge, and vice versa.