Vacuum induced three-body delocalization in cavity quantum materials
Fuente:
arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866915480645664768 |
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| author | Guo, Zhengxin Cai, Zi |
| author_facet | Guo, Zhengxin Cai, Zi |
| contents | In this study, we demonstrate that the vacuum itself suffices to delocalize an Anderson insulator inside a cavity. By studying a disordered one-dimensional spinless fermion system coupled to a single photon mode describing the vacuum fluctuation, we find that even though the cavity mode does not qualitatively change the localization behavior for a single-fermion system, it indeed leads to delocalization via a vacuum fluctuation-induced correlated hopping mechanism for systems with at least three fermions. A mobility edge separating the low-energy localized eigenstates and the high-energy delocalized eigenstates has been revealed. It is shown that such a one-dimensional three-fermion system in with correlated hopping can be mapped to a single-particle system with hopping along the face diagonals in a three dimensional lattice. The effect of the dissipation as well as a many-body generalization have also been discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_15032 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Vacuum induced three-body delocalization in cavity quantum materials Guo, Zhengxin Cai, Zi Disordered Systems and Neural Networks Strongly Correlated Electrons In this study, we demonstrate that the vacuum itself suffices to delocalize an Anderson insulator inside a cavity. By studying a disordered one-dimensional spinless fermion system coupled to a single photon mode describing the vacuum fluctuation, we find that even though the cavity mode does not qualitatively change the localization behavior for a single-fermion system, it indeed leads to delocalization via a vacuum fluctuation-induced correlated hopping mechanism for systems with at least three fermions. A mobility edge separating the low-energy localized eigenstates and the high-energy delocalized eigenstates has been revealed. It is shown that such a one-dimensional three-fermion system in with correlated hopping can be mapped to a single-particle system with hopping along the face diagonals in a three dimensional lattice. The effect of the dissipation as well as a many-body generalization have also been discussed. |
| title | Vacuum induced three-body delocalization in cavity quantum materials |
| topic | Disordered Systems and Neural Networks Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2407.15032 |