# Open-Boundary-Condition-Persistent Point-Gap Bound States in the Non-Hermitian Continuum

Source: [feeds.aps.org](http://link.aps.org/doi/10.1103/qqpd-92fb) · 2026-11-13 · Physics
Page: https://themorning.science/story/open-boundary-condition-persistent-point-gap-bound-states-in-the-non-hermitian-c-8bb93d637207c18a
Kind: research · Impact: low

## In 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.

## Timeline

- 2026-11-13: Paper listed by APS feed

## Coverage

- [Open-Boundary-Condition-Persistent Point-Gap Bound States in the Non-Hermitian Continuum](http://link.aps.org/doi/10.1103/qqpd-92fb) — feeds.aps.org, 2026-11-13

Tags: non-hermitian physics, skin effect, bound states, point-gap topology, open boundary conditions

---

Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science