Finite Temperature Wave-Function Renormalization, A Comparative Analysis

Details Finite Temperature Wave-Function Renormalization, A Comparative Analysis Finite Temperature Wave-Function Renormalization, A Comparative Analysis

1997-01-28

arxiv.org/abs/hep-ph/9701403v1

Phys.Rev.D55:6287-6291,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 figures. LaTeX

Scientific paper

10.1103/PhysRevD.55.6287

We compare two competing theories regarding finite temperature wave-function corrections for the process $H \to e^+e^-$ and for $n+\nu \to p+e^-$ and related processes of interest for primordial nucleosynthesis. Although the two methods are distinct (as shown in $H \to e^+e^-$) they yield the same finite temperature correction for all $n\to p$ and $p \to n$ processes. Both methods yield an increase in the He/H ratio of .01% due to finite temperature renormalization rather than a decrease of .16% as previously predicted.

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