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

References in corpus (4)

• Linear growth of the trace anomaly in Yang-Mills thermodynamics
• Irreducible three-loop contributions to the pressure in Yang-Mills thermodynamics
• Black-Body Anomaly: Analysis of Temperature Offsets
• SU(2) Yang-Mills thermodynamics and photon physics

Cited by in corpus (3)

• Emission and absorption of photons and the black-body spectra in Lorentz-odd Electrodynamics
• CMB dipole revisited
• Thermal ground state for pure SU(2) Yang-Mills thermodynamics