Research
Open-Boundary-Condition-Persistent Point-Gap Bound States in the Non-Hermitian Continuum
feeds.aps.org · By Xingyu Lu, Zeliang Song, Kun Ding & Degang Zhao ·
The Brief
- Point-gap bound states in non-Hermitian systems were generally expected to lose their purely impurity-localized character under open boundary conditions, due to hybridization with the non-Hermitian skin effect.
- The paper by Xingyu Lu, Zeliang Song, Kun Ding and Degang Zhao reports that such bound states can persist under open boundary conditions in a non-Hermitian continuum.
Why it matters
The result challenges the expectation that impurity-localized point-gap states are destroyed by open boundaries, which matters for how researchers interpret non-Hermitian topology and skin effects in continuum systems.
Who’s affected
- physicists studying non-Hermitian systems and topological band theory
- #non-hermitian physics
- #skin effect
- #bound states
- #point-gap topology
- #open boundary conditions
Author(s): Xingyu Lu, Zeliang Song, Kun Ding, and Degang Zhao Point-gap bound states in non-Hermitian systems are generally expected to lose their purely impurity-localized character under open boundary conditions (OBC) owing to hybridization with the non-Hermitian skin effect…