Abstract
It is demonstrated that the commonly accepted mathematical derivation of the fluctuation-dissipation theorem for electromagnetic fields in spatial domains involves restrictive conditions that essentially limit the applicability of the Theorem to the analysis of large-scale radiative heat transfer, and therefore, it may not be applicable to problems of radiative heat transfer over nano- and low-micro-scale distances.
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Budaev, B.V., Bogy, D.B. An undisclosed restriction of the Fluctuation-Dissipation Theorem for electromagnetic fields. Z. Angew. Math. Phys. 74, 88 (2023). https://doi.org/10.1007/s00033-023-01985-z
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DOI: https://doi.org/10.1007/s00033-023-01985-z