Modification of black-body radiance at low temperatures and frequencies

Abstract

In contrast to earlier reports, where the spectrum of the {\sl energy density} of photonic black-body radiation modified by SU(2) effects was discussed, we discuss the low-frequency spectrum of the {\sl radiance} at temperatures ranging between 5 and 20 Kelvin. We conclude that compared to the conventional theory the only observable effect is associated with the spectral gap (total screening). We also discuss how a low-temperature black body cavity under the influence of a sufficiently strong static electric field is forced to emit according to Planck's radiation law (pure U(1) theory) even at low frequencies and how this effect can be utilized to measure SU(2) induced deviations.

arXiv comment10 pp, 5 figs; v2: slight changes in text, extended discussion of Rydberg-atom experiment

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• Cosmological parameters from Planck data in SU(2)${}_{\mathrm{CMB}}$, their local $\Lambda$CDM values, and the modified photon Boltzmann equation
• SU(2) Yang-Mills thermodynamics: a priori estimate and radiative corrections
• Thermodynamics of SU(2) quantum Yang-Mills theory and CMB anomalies
• SU(2) Quantum Yang-Mills Thermodynamics: Some Theory and Some Applications