Abstract
The consideration of equilibrium radiation in plasma-like media shows that the spectral energy distribution of such radiation differs from that of Planck equilibrium radiation. Based on the previously derived relation for the spectral energy density of equilibrium radiation in the system of charged particles, accounting for finite damping in a medium with spatial dispersion, the limiting case of infinitesimal damping dispersion is considered. It was shown that zero-point vacuum fluctuations being a component of the total spectral energy distribution in the medium should be renormalized when using certain models for the transverse plasma permittivity. In this case, renormalized zero-point vacuum fluctuations become dependent on plasma parameters. The possibility of the manifestation of this effect is discussed.
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Funding
S.A. Trigger acknowledges the support of the Joint Institute for High Temperatures scientific program and the Russian Foundation for Basic Research, project no. 17-02-00573a.
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Translated by A. Kazantsev
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Ignatov, A.M., Trigger, S.A. On the Spectral Distribution of Equilibrium Radiation and Zero-Point Fluctuations in the Coulomb System. Bull. Lebedev Phys. Inst. 47, 6–9 (2020). https://doi.org/10.3103/S1068335620010030
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DOI: https://doi.org/10.3103/S1068335620010030