Two-dimensional many-body localized systems coupled to a heat bath
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866915424251150336 |
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| author | Li, Joey Chan, Amos Wahl, Thorsten B. |
| author_facet | Li, Joey Chan, Amos Wahl, Thorsten B. |
| contents | We numerically investigate the effect of coupling a two-dimensional many-body localized system to a finite heat bath, using shallow quantum circuits as a variational ansatz. Specifically, we simulate optical lattice experiments with two components of ultracold bosons, where only one species is subject to a random disorder potential and the other acts as a heat bath. We obtain a filling fraction dependent phase diagram with a critical filling consistent with experiments. We also calculate two-point correlation functions and the quantum mutual information between sites. We observe a distribution of the quantum mutual information in the many-body localized regime which is consistent with the presence of resonances, similar to those observed in one-dimensional many-body localized systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_14652 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Two-dimensional many-body localized systems coupled to a heat bath Li, Joey Chan, Amos Wahl, Thorsten B. Disordered Systems and Neural Networks Quantum Gases Statistical Mechanics Quantum Physics We numerically investigate the effect of coupling a two-dimensional many-body localized system to a finite heat bath, using shallow quantum circuits as a variational ansatz. Specifically, we simulate optical lattice experiments with two components of ultracold bosons, where only one species is subject to a random disorder potential and the other acts as a heat bath. We obtain a filling fraction dependent phase diagram with a critical filling consistent with experiments. We also calculate two-point correlation functions and the quantum mutual information between sites. We observe a distribution of the quantum mutual information in the many-body localized regime which is consistent with the presence of resonances, similar to those observed in one-dimensional many-body localized systems. |
| title | Two-dimensional many-body localized systems coupled to a heat bath |
| topic | Disordered Systems and Neural Networks Quantum Gases Statistical Mechanics Quantum Physics |
| url | https://arxiv.org/abs/2410.14652 |