Floquet-enhanced Thermal Emission in Silicon Carbide Avoids Divergence, Demonstrates Modest Enhancement

Condensed Matter > Mesoscale and Nanoscale Physics arXiv:2510.09300 (cond-mat) [Submitted on 10 Oct 2025] Title:Clarification of Floquet--Enhanced Thermal Emission Through the Nonequilibrium Green's Function Formalism Authors:Yuhua Ren, Hui Pan, Jian-Sheng Wang View a PDF of the paper titled Clarification of Floquet--Enhanced Thermal Emission Through the Nonequilibrium Green's Function Formalism, by Yuhua Ren and 2 other authors View PDF HTML (experimental) Abstract:Floquet engineering offers a powerful route to enhance emission in time-modulated media. Here, we investigate the influence of time-modulated permittivity in silicon carbide on its intensity spectrum. We consider both the nonequilibrium Green's function approach and the macroscopic quantum electrodynamics approach, and establish their formal compatibility by deriving the Lippmann-Schwinger equation in both cases. To analyze spectral features, we propose several methods for decomposing the electric field into positive- and negative-frequency components, along with the criteria required for physical consistency. Our analytical and numerical results show that, when defined appropriately, the intensity spectrum avoids divergence, though the resulting enhancement remains modest. These findings provide a unified theoretical foundation for modeling time-dependent media, and reinforce the utility of Floquet engineering as a versatile platform for tailoring emission dynamics. Comments: Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Cite as: arXiv:2510.09300 [cond-mat.mes-hall] (or arXiv:2510.09300v1 [cond-mat.mes-hall] for this version) https://doi.org/10.48550/arXiv.2510.09300 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Yuhua Ren [view email] [v1] Fri, 10 Oct 2025 11:46:02 UTC (47 KB) Full-text links: Access Paper: View a PDF of the paper titled Clarification of Floquet--Enhanced Thermal Emission Through the Nonequilibrium Green's Function Formalism, by Yuhua Ren and 2 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: cond-mat.mes-hall new | recent | 2025-10 Change to browse by: cond-mat References & Citations NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) IArxiv recommender toggle IArxiv Recommender (What is IArxiv?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)