Topological instabilities in ac-driven bosonic systems
- Under nonequilibrium conditions, bosonic modes can become dynamically unstable with an exponentially growing occupation. On the other hand, topological band structures give rise to symmetry protected midgap states. In this Letter, we investigate the interplay of instability and topology. Thereby, we establish a general relation between topology and instability under ac driving. We apply our findings to create dynamical instabilities which are strongly localized at the boundaries of a finite-size system. As these localized instabilities are protected by symmetry, they can be considered as topological instabilities.
| Author: | Georg Engelhardt, Mónica BenitoORCiDGND, Gloria Platero, Tobias Brandes |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1042913 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/104291 |
| ISSN: | 0031-9007OPAC |
| Parent Title (English): | Physical Review Letters |
| Publisher: | American Physical Society (APS) |
| Place of publication: | College Park, MD |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2016 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2023/05/10 |
| Volume: | 117 |
| First Page: | 045302 |
| DOI: | https://doi.org/10.1103/PhysRevLett.117.045302 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Professur für Quantencomputing und Quantengeräte | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  Deutsches Urheberrecht |
