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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Accès en ligne: | https://arxiv.org/abs/2512.05196 |
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| _version_ | 1866911302437306368 |
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| author | Welakuh, Davis M. Rokaj, Vasil Ruggenthaler, Michael Rubio, Angel |
| author_facet | Welakuh, Davis M. Rokaj, Vasil Ruggenthaler, Michael Rubio, Angel |
| contents | In this work, we detail different approaches to treat multi-mode photonic environments within non-relativistic quantum electrodynamics in the long-wavelength approximation efficiently. Specifically we show that for equilibrium properties of coupled light-matter systems, we can approximately capture the effects of multi-mode photonic environments on matter systems by either only keeping the polarization part of the electric field in the length-gauge formulation or by a few effective modes. We present a comprehensive set of approximation methods designed to accurately capture equilibrium phenomena in quantum light-matter systems across a range of complex photonic environments, from weak to strong coupling. These methods are applied to atomic and molecular models as well as to a two-dimensional quantum ring, demonstrating the versatility of our approach and laying the groundwork for first-principles simulations of real materials in cavity quantum electrodynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05196 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Multimode equilibrium approximations in light-matter systems from weak to strong coupling Welakuh, Davis M. Rokaj, Vasil Ruggenthaler, Michael Rubio, Angel Quantum Physics In this work, we detail different approaches to treat multi-mode photonic environments within non-relativistic quantum electrodynamics in the long-wavelength approximation efficiently. Specifically we show that for equilibrium properties of coupled light-matter systems, we can approximately capture the effects of multi-mode photonic environments on matter systems by either only keeping the polarization part of the electric field in the length-gauge formulation or by a few effective modes. We present a comprehensive set of approximation methods designed to accurately capture equilibrium phenomena in quantum light-matter systems across a range of complex photonic environments, from weak to strong coupling. These methods are applied to atomic and molecular models as well as to a two-dimensional quantum ring, demonstrating the versatility of our approach and laying the groundwork for first-principles simulations of real materials in cavity quantum electrodynamics. |
| title | Multimode equilibrium approximations in light-matter systems from weak to strong coupling |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2512.05196 |