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...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
6 February 2019
|
| In: |
Physical review letters
Year: 2019, Volume: 122, Issue: 5 |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.050403 |
| Online Access: | Verlag, Volltext: https://doi.org/10.1103/PhysRevLett.122.050403 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevLett.122.050403 
|
| Author Notes: | T.V. Zache, N. Mueller, J.T. Schneider, F. Jendrzejewski, J. Berges, and P. Hauke |
| Summary: | 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. |
|---|---|
| Item Description: | Gesehen am 16.08.2019 Im Titel ist "theta" als griechischer Buchstabe dargestellt |
| Physical Description: | Online Resource |
| ISSN: | 1079-7114 |
| DOI: | 10.1103/PhysRevLett.122.050403 |