Thermal photon dispersion law and modified black-body spectra

Abstract

Based on the postulate that photon propagation is governed by an SU(2) gauge principle we numerically compute the one-loop dispersion for thermalized photon propagation on the radiatively induced mass shell. Formerly, the dispersion was addressed by assuming $p^2=0$. While this approximation turns out to be excellent for temperatures $\le 2T_{CMB}$ the exact result exhibits a much faster (power-like) shrinking of the gap in the black-body spectral intensity with rising temperature. Our previous statements on anomalous large-angle CMB temperature-temperature correlations, obtained in the approximation $p^2=0$, remain valid.

v2: 13 pages, 6 figures; sec. 2.1. added to explain effective theory; references added; matches journal published version

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• Low-frequency line temperatures of the CMB
• Modification of black-body radiance at low temperatures and frequencies
• One-loop photon-photon scattering in a thermal, deconfining SU(2) Yang-Mills plasma
• CMB dipole revisited
• SU(2) Yang-Mills thermodynamics: a priori estimate and radiative corrections
• Thermodynamics of SU(2) quantum Yang-Mills theory and CMB anomalies
• Improved ground-state estimate by thermal resummation
• SU(2) Quantum Yang-Mills Thermodynamics: Some Theory and Some Applications
• Onset of magnetic monopole-antimonopole condensation
• Thermal ground state for pure SU(2) Yang-Mills thermodynamics