Entanglement detection in postquench nonequilibrium states: thermal Gibbs vs. generalized Gibbs ensemble
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866913635374202880 |
|---|---|
| author | Iglói, Ferenc Király, Csaba |
| author_facet | Iglói, Ferenc Király, Csaba |
| contents | We use entanglement witnesses related to the entanglement negativity of the state to detect entanglement in the $XY$ chain in the postquench states in the thermodynamic limit after a quench when the parameters of the Hamiltonian are changed suddenly. The entanglement negativity is related to correlations, which in the postquench stationary state are described by a generalized Gibbs ensemble, in the ideal case. If, however, integrability breaking perturbations are present, the system is expected to thermalize. Here we compare the nearest-neighbor entanglement in the two circumstances. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_07897 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Entanglement detection in postquench nonequilibrium states: thermal Gibbs vs. generalized Gibbs ensemble Iglói, Ferenc Király, Csaba Quantum Physics Statistical Mechanics We use entanglement witnesses related to the entanglement negativity of the state to detect entanglement in the $XY$ chain in the postquench states in the thermodynamic limit after a quench when the parameters of the Hamiltonian are changed suddenly. The entanglement negativity is related to correlations, which in the postquench stationary state are described by a generalized Gibbs ensemble, in the ideal case. If, however, integrability breaking perturbations are present, the system is expected to thermalize. Here we compare the nearest-neighbor entanglement in the two circumstances. |
| title | Entanglement detection in postquench nonequilibrium states: thermal Gibbs vs. generalized Gibbs ensemble |
| topic | Quantum Physics Statistical Mechanics |
| url | https://arxiv.org/abs/2403.07897 |