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arXiv · hep-ph/9701403

Finite Temperature Wave-Function Renormalization, A Comparative Analysis

Ian Chapman
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Abstract

We compare two competing theories regarding finite temperature wave-function corrections for the process $H \to e^+e^-$ and for $n+ν\to p+e^-$ 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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Ian Chapman. 1997-01-28. Finite Temperature Wave-Function Renormalization, A Comparative Analysis. https://doi.org/10.1103/physrevd.55.6287

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