Dynamical quantum phase transition with divergent multipartite entanglement
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Acceso en línea: | |
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| _version_ | 1866909650321932288 |
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| author | Chen, Jie de Almeida, Ricardo Costa Weimer, Hendrik |
| author_facet | Chen, Jie de Almeida, Ricardo Costa Weimer, Hendrik |
| contents | We investigate the nonequilibrium quench dynamics of the one-dimensional transverse-field Ising model in both integrable and nonintegrable regimes. In particular, we report on a novel type of dynamical quantum phase transition (DQPT) that is characterized by a divergent multipartite entanglement at critical times in the post-quench dynamics. We quantify the multipartite entanglement of the state by the quantum Fisher information and demonstrate that the DQPT belongs to a different universality class than the ground-state phase transition. Furthermore, we perform a spectral analysis of the DQPT and demonstrate that it is a genuine nonequilibrium transition arising from the constructive interference of excited states of the system during the many-body dynamics. Finally, we discuss potential experimental realizations in Rydberg platforms as well as applications in the context of quantum metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_13898 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Dynamical quantum phase transition with divergent multipartite entanglement Chen, Jie de Almeida, Ricardo Costa Weimer, Hendrik Quantum Physics Quantum Gases We investigate the nonequilibrium quench dynamics of the one-dimensional transverse-field Ising model in both integrable and nonintegrable regimes. In particular, we report on a novel type of dynamical quantum phase transition (DQPT) that is characterized by a divergent multipartite entanglement at critical times in the post-quench dynamics. We quantify the multipartite entanglement of the state by the quantum Fisher information and demonstrate that the DQPT belongs to a different universality class than the ground-state phase transition. Furthermore, we perform a spectral analysis of the DQPT and demonstrate that it is a genuine nonequilibrium transition arising from the constructive interference of excited states of the system during the many-body dynamics. Finally, we discuss potential experimental realizations in Rydberg platforms as well as applications in the context of quantum metrology. |
| title | Dynamical quantum phase transition with divergent multipartite entanglement |
| topic | Quantum Physics Quantum Gases |
| url | https://arxiv.org/abs/2506.13898 |