Relaxation in dipolar spin ladders: from pair production to false-vacuum decay
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2023
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866929490969493504 |
|---|---|
| author | Domínguez-Castro, G. A. Bilitewski, Thomas Wellnitz, David Rey, Ana Maria Santos, Luis |
| author_facet | Domínguez-Castro, G. A. Bilitewski, Thomas Wellnitz, David Rey, Ana Maria Santos, Luis |
| contents | Ultracold dipolar particles pinned in optical lattices or tweezers provide an excellent platform for studying out-of-equilibrium quantum magnetism with dipole-mediated couplings. Starting with an initial state with spins of opposite orientation in each of the legs of a ladder lattice, we show that spin relaxation displays an unexpected dependence on inter-leg distance and dipole orientation. This intricate dependence, stemming from the interplay between intra- and inter-leg interactions, results in three distinct dynamical regimes: (i) ergodic, characterized by the fast relaxation towards equilibrium of correlated pairs of excitations generated at exponentially fast rates from the initial state; (ii) metastable, in which the state is quasi-localized in the initial state and only decays at exceedingly long timescales, resembling false vacuum decay; and, surprisingly, (iii) partially-relaxed, with coexisting fast partial relaxation and very long-lived partial quasi-localization. Realizing these intriguing dynamics is within reach of current state-of-the-art experiments in dipolar gases. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_18091 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Relaxation in dipolar spin ladders: from pair production to false-vacuum decay Domínguez-Castro, G. A. Bilitewski, Thomas Wellnitz, David Rey, Ana Maria Santos, Luis Quantum Gases Ultracold dipolar particles pinned in optical lattices or tweezers provide an excellent platform for studying out-of-equilibrium quantum magnetism with dipole-mediated couplings. Starting with an initial state with spins of opposite orientation in each of the legs of a ladder lattice, we show that spin relaxation displays an unexpected dependence on inter-leg distance and dipole orientation. This intricate dependence, stemming from the interplay between intra- and inter-leg interactions, results in three distinct dynamical regimes: (i) ergodic, characterized by the fast relaxation towards equilibrium of correlated pairs of excitations generated at exponentially fast rates from the initial state; (ii) metastable, in which the state is quasi-localized in the initial state and only decays at exceedingly long timescales, resembling false vacuum decay; and, surprisingly, (iii) partially-relaxed, with coexisting fast partial relaxation and very long-lived partial quasi-localization. Realizing these intriguing dynamics is within reach of current state-of-the-art experiments in dipolar gases. |
| title | Relaxation in dipolar spin ladders: from pair production to false-vacuum decay |
| topic | Quantum Gases |
| url | https://arxiv.org/abs/2311.18091 |