Non-Hermitian Topology with Generalized Chiral Symmetry
Fuente:
arXiv
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866929291502026752 |
|---|---|
| author | Westström, Alex Duan, Wenbu Li, Jian |
| author_facet | Westström, Alex Duan, Wenbu Li, Jian |
| contents | We study a generalization of chiral symmetry applicable to non-Hermitian systems and its topological consequences on one-dimensional chains. We uncover a rich family of topological phases hosting several chiral flavors characterized not by a single winding number, but a vector of of them. This, in turn, leads to a novel type of bulk-boundary correspondence, where -- in contrast with conventional chiral chains -- some flavors can have topologically stable non-zero charges on both ends. Moreover, we find that the total charge of each flavor can in some cases exceed the magnitude of the highest winding number in the vector invariant. Our work extends the topological classification of the non-Hermitian AIII class along a new axis. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_18268 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Non-Hermitian Topology with Generalized Chiral Symmetry Westström, Alex Duan, Wenbu Li, Jian Mesoscale and Nanoscale Physics We study a generalization of chiral symmetry applicable to non-Hermitian systems and its topological consequences on one-dimensional chains. We uncover a rich family of topological phases hosting several chiral flavors characterized not by a single winding number, but a vector of of them. This, in turn, leads to a novel type of bulk-boundary correspondence, where -- in contrast with conventional chiral chains -- some flavors can have topologically stable non-zero charges on both ends. Moreover, we find that the total charge of each flavor can in some cases exceed the magnitude of the highest winding number in the vector invariant. Our work extends the topological classification of the non-Hermitian AIII class along a new axis. |
| title | Non-Hermitian Topology with Generalized Chiral Symmetry |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2403.18268 |