The Intrinsic Connection between Dynamical Phase Transitions and Magnetization in the 1D XY Model
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917239661264896 |
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| author | Luo, Lin-Yue Li, Wei-Lin Xu, Bao-Ming Li, Zhi |
| author_facet | Luo, Lin-Yue Li, Wei-Lin Xu, Bao-Ming Li, Zhi |
| contents | In this manuscript, we study the quench dynamics of a transverse-field XY model starting from coherent Gibbs states. The results reveal that the initial strength of magnetization plays a crucial role in the emergence of dynamical quantum phase transitions. In concrete terms, when quenching within the same phase, through the properties of observables such as Fisher zeros and magnetization, we show that the stronger the initial magnetization, the more difficult the emergence of dynamical quantum phase transitions. The underlying mechanism is that the strong initial magnetization provides a directional effect, which inhibits the spin flipping in the process of quantum quench, making the dynamical quantum phase transition difficult to emerge. Since dynamical quantum phase transitions can be experimentally realized in various artificial systems, we hope that the physics predicted here can be experimentally verified in tabletop platforms. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_01259 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The Intrinsic Connection between Dynamical Phase Transitions and Magnetization in the 1D XY Model Luo, Lin-Yue Li, Wei-Lin Xu, Bao-Ming Li, Zhi Quantum Physics Other Condensed Matter In this manuscript, we study the quench dynamics of a transverse-field XY model starting from coherent Gibbs states. The results reveal that the initial strength of magnetization plays a crucial role in the emergence of dynamical quantum phase transitions. In concrete terms, when quenching within the same phase, through the properties of observables such as Fisher zeros and magnetization, we show that the stronger the initial magnetization, the more difficult the emergence of dynamical quantum phase transitions. The underlying mechanism is that the strong initial magnetization provides a directional effect, which inhibits the spin flipping in the process of quantum quench, making the dynamical quantum phase transition difficult to emerge. Since dynamical quantum phase transitions can be experimentally realized in various artificial systems, we hope that the physics predicted here can be experimentally verified in tabletop platforms. |
| title | The Intrinsic Connection between Dynamical Phase Transitions and Magnetization in the 1D XY Model |
| topic | Quantum Physics Other Condensed Matter |
| url | https://arxiv.org/abs/2602.01259 |