Dynamical topological transitions in the massive Schwinger Model with a [theta] term
Aiming at a better understanding of anomalous and topological effects in gauge theories out of equilibrium, we study the real-time dynamics of a prototype model for CP violation, the massive Schwinger model with a θ term. We identify dynamical quantum phase transitions between different topological...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
6 February 2019
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| In: |
Physical review letters
Year: 2019, Jahrgang: 122, Heft: 5 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.050403 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.122.050403 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.050403 
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| Verfasserangaben: | T.V. Zache, N. Mueller, J.T. Schneider, F. Jendrzejewski, J. Berges, and P. Hauke |
| Zusammenfassung: | Aiming at a better understanding of anomalous and topological effects in gauge theories out of equilibrium, we study the real-time dynamics of a prototype model for CP violation, the massive Schwinger model with a θ term. We identify dynamical quantum phase transitions between different topological sectors that appear after sufficiently strong quenches of the θ parameter. Moreover, we establish a general dynamical topological order parameter, which can be accessed through fermion two-point correlators and, importantly, which can be applied for interacting theories. Enabled by this result, we show that the topological transitions persist beyond the weak-coupling regime. Finally, these effects can be observed with tabletop experiments based on existing cold-atom, superconducting-qubit, and trapped-ion technology. Our Letter thus presents a significant step towards quantum simulating topological and anomalous real-time phenomena relevant to nuclear and high-energy physics. |
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| Beschreibung: | Gesehen am 16.08.2019 Im Titel ist "theta" als griechischer Buchstabe dargestellt |
| Beschreibung: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.050403 |