Generalized Bloch's Theorem for Cavity Exciton Polaron-Polaritons
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866913058730803200 |
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| author | Taylor, Michael A. D. Zhang, Yu |
| author_facet | Taylor, Michael A. D. Zhang, Yu |
| contents | We show that excitons coupled to cavity photons and phonons admit a generalized Bloch theorem when formulated for the conserved total crystal momentum. In minimal-coupling and Fröhlich representations, the interchange of momenta between fermions and bosons breaks crystalline excitons' translational symmetry. In our symmetry-adapted frame, the Hamiltonian becomes block diagonal, without invoking approximations. The resulting formulation yields dispersions and optical responses of cavity exciton polaron-polaritons, enabling investigations that elucidate material properties in strong coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_03230 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Generalized Bloch's Theorem for Cavity Exciton Polaron-Polaritons Taylor, Michael A. D. Zhang, Yu Quantum Physics Other Condensed Matter Optics We show that excitons coupled to cavity photons and phonons admit a generalized Bloch theorem when formulated for the conserved total crystal momentum. In minimal-coupling and Fröhlich representations, the interchange of momenta between fermions and bosons breaks crystalline excitons' translational symmetry. In our symmetry-adapted frame, the Hamiltonian becomes block diagonal, without invoking approximations. The resulting formulation yields dispersions and optical responses of cavity exciton polaron-polaritons, enabling investigations that elucidate material properties in strong coupling. |
| title | Generalized Bloch's Theorem for Cavity Exciton Polaron-Polaritons |
| topic | Quantum Physics Other Condensed Matter Optics |
| url | https://arxiv.org/abs/2601.03230 |