Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-06-03
Annalen Phys.18:271-280,2009
Physics
High Energy Physics
High Energy Physics - Theory
v2: 13 pages, 6 figures; sec. 2.1. added to explain effective theory; references added; matches journal published version
Scientific paper
10.1002/andp.200910348
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 $\le 2 T_{\tiny{CMB}}$ 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.
Hofmann Ralf
Ludescher Josef
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