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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2511.11645 |
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| _version_ | 1866915809818836992 |
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| author | Bai, Lin-Yue Meyer, René Zhou, Zhen-Hua |
| author_facet | Bai, Lin-Yue Meyer, René Zhou, Zhen-Hua |
| contents | We construct a simple holographic model incorporating higher-order coupling terms for electron self-interactions. It can exhibit typical behavior of a Mott insulator, including a metal-insulator transition and a decrease in DC conductivity with the increase of charge density. In the analysis of AC conductivity, a soft gap is generally observed. Notably, when the DC conductivity approaches zero, the AC conductivity reveals a multi-peak structure, which can be attributed to the Mott and charge-transfer gaps observed experimentally in transition metals. With the increase of DC conductivity, the multi-peak structure gradually reverts to soft-gap behavior or even metallic conductivity. The accuracy of the numerical result is guaranteed by $σ(ω\to 0)=σ_{DC}$ and sum rules. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11645 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-order coupling as a driver for Mott insulating behavior in Holography Bai, Lin-Yue Meyer, René Zhou, Zhen-Hua Strongly Correlated Electrons High Energy Physics - Theory We construct a simple holographic model incorporating higher-order coupling terms for electron self-interactions. It can exhibit typical behavior of a Mott insulator, including a metal-insulator transition and a decrease in DC conductivity with the increase of charge density. In the analysis of AC conductivity, a soft gap is generally observed. Notably, when the DC conductivity approaches zero, the AC conductivity reveals a multi-peak structure, which can be attributed to the Mott and charge-transfer gaps observed experimentally in transition metals. With the increase of DC conductivity, the multi-peak structure gradually reverts to soft-gap behavior or even metallic conductivity. The accuracy of the numerical result is guaranteed by $σ(ω\to 0)=σ_{DC}$ and sum rules. |
| title | High-order coupling as a driver for Mott insulating behavior in Holography |
| topic | Strongly Correlated Electrons High Energy Physics - Theory |
| url | https://arxiv.org/abs/2511.11645 |