Many-Body Floquet Theory for Radiative Heat Transfer in Time-Modulated Systems
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866918273631649792 |
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| author | Messina, Riccardo Ben-Abdallah, Philippe |
| author_facet | Messina, Riccardo Ben-Abdallah, Philippe |
| contents | We develop a general theory of radiative heat exchange between dipoles with time-modulated optical properties. This framework extends fluctuational electrodynamics beyond equilibrium by incorporating nonstationary correlations and memory effects induced by temporal modulation. Closed-form expressions for the heat currents in modulated many-body systems are obtained, together with a generalized Landauer-like formulation of the pairwise exchanges, where the transmission coefficient accounts for all inelastic frequency-conversion channels. Near-resonant modulation redistributes and amplifies thermal fluctuations across Floquet sidebands, acting as a parametric amplifier of thermal radiation and enabling active, frequency-selective control of nanoscale heat transfer. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_19378 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Many-Body Floquet Theory for Radiative Heat Transfer in Time-Modulated Systems Messina, Riccardo Ben-Abdallah, Philippe Optics Mesoscale and Nanoscale Physics We develop a general theory of radiative heat exchange between dipoles with time-modulated optical properties. This framework extends fluctuational electrodynamics beyond equilibrium by incorporating nonstationary correlations and memory effects induced by temporal modulation. Closed-form expressions for the heat currents in modulated many-body systems are obtained, together with a generalized Landauer-like formulation of the pairwise exchanges, where the transmission coefficient accounts for all inelastic frequency-conversion channels. Near-resonant modulation redistributes and amplifies thermal fluctuations across Floquet sidebands, acting as a parametric amplifier of thermal radiation and enabling active, frequency-selective control of nanoscale heat transfer. |
| title | Many-Body Floquet Theory for Radiative Heat Transfer in Time-Modulated Systems |
| topic | Optics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2510.19378 |