Emergent Gauge Fields in Band Insulators
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866910905535561728 |
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| author | Han, Zhaoyu Kivelson, Steven |
| author_facet | Han, Zhaoyu Kivelson, Steven |
| contents | By explicit microscopic construction involving a mapping to a quantum vertex model subject to the `ice rule,' we show that an electronically `trivial' band insulator with suitable vibrational (phonon) degrees of freedom can host a ``resonating valence-bond'' state - a quantum phase with emergent gauge fields. This novel type of band insulator is identifiable by the existence of emergent gapless `photon' modes and deconfined excitations, the latter of which carry non-quantized mobile charges. We suggest that such phases may exist in the quantum regimes of various nearly ferroelectric materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_17539 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Emergent Gauge Fields in Band Insulators Han, Zhaoyu Kivelson, Steven Strongly Correlated Electrons Materials Science By explicit microscopic construction involving a mapping to a quantum vertex model subject to the `ice rule,' we show that an electronically `trivial' band insulator with suitable vibrational (phonon) degrees of freedom can host a ``resonating valence-bond'' state - a quantum phase with emergent gauge fields. This novel type of band insulator is identifiable by the existence of emergent gapless `photon' modes and deconfined excitations, the latter of which carry non-quantized mobile charges. We suggest that such phases may exist in the quantum regimes of various nearly ferroelectric materials. |
| title | Emergent Gauge Fields in Band Insulators |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2405.17539 |