Non-Hermitian bulk–boundary correspondence in quantum dynamics

• Published in: Nature physics Vol. 16; no. 7; pp. 761 - 766
• Main Authors: Xiao, Lei, Deng, Tianshu, Wang, Kunkun, Zhu, Gaoyan, Wang, Zhong, Yi, Wei, Xue, Peng
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 01.07.2020; Nature Publishing Group
• Subjects: 639/624/400/482; 639/766/119/2792/4128; 639/766/483/3926; Atomic; Band theory; Bloch band; Boundaries; Brillouin zones; Classical and Continuum Physics; Closed systems; Complex Systems; Condensed Matter Physics; Eigenvectors; Invariants; Mathematical and Computational Physics; Molecular; Open systems; Optical and Plasma Physics; Photons; Physics; Physics and Astronomy; Skin effect; System effectiveness; Theoretical; Topology
• ISSN: 1745-2473; 1745-2481
• DOI: 10.1038/s41567-020-0836-6

Bulk–boundary correspondence, a guiding principle in topological matter, relates robust edge states to bulk topological invariants. Its validity, however, has so far been established only in closed systems. Recent theoretical studies indicate that this principle requires fundamental revisions for a...