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Título: | Topological instabilities in ac-driven bosonic systems |
Autor: | Engelhardt, G.; Benito, Mónica CSIC; Platero, Gloria CSIC ORCID; Brandes, T. | Fecha de publicación: | 22-jul-2016 | Editor: | American Physical Society | Citación: | Physical Review Letters 117(4): 045302 (2016) | Resumen: | 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. | Versión del editor: | https://doi.org/10.1103/PhysRevLett.117.045302 | URI: | http://hdl.handle.net/10261/186973 | DOI: | 10.1103/PhysRevLett.117.045302 | Identificadores: | doi: 10.1103/PhysRevLett.117.045302 e-issn: 1079-7114 issn: 0031-9007 |
Aparece en las colecciones: | (ICMM) Artículos |
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