Low lying excited states quantum entanglement and continuous quantum phase transitions
Abstract From the perspective of entanglement in low-lying excited states, a profound analysis was carried out regarding the quantum phase transitions within three models that fall outside the Landau-Ginzburg-Wilson (LGW) paradigm. In the context of the deconfined quantum critical point (DQCP) in a...
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Nature Portfolio
2025-02-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-90248-0 |
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| author | Yan-Chao Li Yuan-Hang Zhou Yuan Zhang Hai-Qing Lin |
| author_facet | Yan-Chao Li Yuan-Hang Zhou Yuan Zhang Hai-Qing Lin |
| author_sort | Yan-Chao Li |
| collection | DOAJ |
| description | Abstract From the perspective of entanglement in low-lying excited states, a profound analysis was carried out regarding the quantum phase transitions within three models that fall outside the Landau-Ginzburg-Wilson (LGW) paradigm. In the context of the deconfined quantum critical point (DQCP) in a one-dimensional quantum spin chain, our findings demonstrate a tight correlation between the reconstruction of low-lying excitation spectra and the DQCP. The precise location of the critical point and its continuous nature can be signaled by the singular behaviors of the entanglement of the first-excited state. Moreover, in comparison with two types of Berezinskii-Kosterlitz-Thouless (BKT) phase transitions, the entanglement presents three different singularity characteristics. These characteristics not only unveil the essence of diverse symmetry types on either side of the DQCP but also expose the disparate causes underlying the formation of the two BKT type phase transitions. |
| format | Article |
| id | doaj-art-633a1a2a1153482ea56f00e93528a8cd |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-633a1a2a1153482ea56f00e93528a8cd2025-08-20T02:15:11ZengNature PortfolioScientific Reports2045-23222025-02-011511910.1038/s41598-025-90248-0Low lying excited states quantum entanglement and continuous quantum phase transitionsYan-Chao Li0Yuan-Hang Zhou1Yuan Zhang2Hai-Qing Lin3Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of SciencesCenter of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of SciencesCenter of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of SciencesZhejiang Institute of Modern Physics and School of Physics, Zhejiang UniversityAbstract From the perspective of entanglement in low-lying excited states, a profound analysis was carried out regarding the quantum phase transitions within three models that fall outside the Landau-Ginzburg-Wilson (LGW) paradigm. In the context of the deconfined quantum critical point (DQCP) in a one-dimensional quantum spin chain, our findings demonstrate a tight correlation between the reconstruction of low-lying excitation spectra and the DQCP. The precise location of the critical point and its continuous nature can be signaled by the singular behaviors of the entanglement of the first-excited state. Moreover, in comparison with two types of Berezinskii-Kosterlitz-Thouless (BKT) phase transitions, the entanglement presents three different singularity characteristics. These characteristics not only unveil the essence of diverse symmetry types on either side of the DQCP but also expose the disparate causes underlying the formation of the two BKT type phase transitions.https://doi.org/10.1038/s41598-025-90248-0 |
| spellingShingle | Yan-Chao Li Yuan-Hang Zhou Yuan Zhang Hai-Qing Lin Low lying excited states quantum entanglement and continuous quantum phase transitions Scientific Reports |
| title | Low lying excited states quantum entanglement and continuous quantum phase transitions |
| title_full | Low lying excited states quantum entanglement and continuous quantum phase transitions |
| title_fullStr | Low lying excited states quantum entanglement and continuous quantum phase transitions |
| title_full_unstemmed | Low lying excited states quantum entanglement and continuous quantum phase transitions |
| title_short | Low lying excited states quantum entanglement and continuous quantum phase transitions |
| title_sort | low lying excited states quantum entanglement and continuous quantum phase transitions |
| url | https://doi.org/10.1038/s41598-025-90248-0 |
| work_keys_str_mv | AT yanchaoli lowlyingexcitedstatesquantumentanglementandcontinuousquantumphasetransitions AT yuanhangzhou lowlyingexcitedstatesquantumentanglementandcontinuousquantumphasetransitions AT yuanzhang lowlyingexcitedstatesquantumentanglementandcontinuousquantumphasetransitions AT haiqinglin lowlyingexcitedstatesquantumentanglementandcontinuousquantumphasetransitions |