Inducing a transition between thermal and many-body localized states and detecting many-body mobility edges through dissipation
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| Format: | Preprint |
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2024
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| _version_ | 1866918029446610944 |
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| author | Hu, Yutao Yang, Chao Wang, Yucheng |
| author_facet | Hu, Yutao Yang, Chao Wang, Yucheng |
| contents | The many-body mobility edge (MBME) in energy, which separates thermal states from many-body localization (MBL) states, is a critical yet controversial concept in MBL physics. Here we examine the quasiperiodic $t_1-t_2$ model that features a mobility edge. With the addition of nearest-neighbor interactions, we suggest the potential existence of a MBME. Then we investigate the impact of a type of bond dissipation on the many-body system by calculating the steady-state density matrix and analyzing the transport behavior, and demonstrate that dissipation can cause the system to predominantly occupy either the thermal region or the MBL region, irrespective of the initial state. Finally, we discuss the effects of increasing system size. Our results indicate that dissipation can induce transitions between thermal and MBL states, providing a new approach for experimentally determining the existence of the MBME. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_13655 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Inducing a transition between thermal and many-body localized states and detecting many-body mobility edges through dissipation Hu, Yutao Yang, Chao Wang, Yucheng Disordered Systems and Neural Networks Statistical Mechanics Optics Quantum Physics The many-body mobility edge (MBME) in energy, which separates thermal states from many-body localization (MBL) states, is a critical yet controversial concept in MBL physics. Here we examine the quasiperiodic $t_1-t_2$ model that features a mobility edge. With the addition of nearest-neighbor interactions, we suggest the potential existence of a MBME. Then we investigate the impact of a type of bond dissipation on the many-body system by calculating the steady-state density matrix and analyzing the transport behavior, and demonstrate that dissipation can cause the system to predominantly occupy either the thermal region or the MBL region, irrespective of the initial state. Finally, we discuss the effects of increasing system size. Our results indicate that dissipation can induce transitions between thermal and MBL states, providing a new approach for experimentally determining the existence of the MBME. |
| title | Inducing a transition between thermal and many-body localized states and detecting many-body mobility edges through dissipation |
| topic | Disordered Systems and Neural Networks Statistical Mechanics Optics Quantum Physics |
| url | https://arxiv.org/abs/2407.13655 |