Primordial Nucleosynthesis and Finite Temperature QED
Cosmology and Nongalactic Astrophysics
2013-06-25 v2
Abstract
Abundances of light nuclei formed during primordial nucleosynthesis are predicted by Standard Big Bang Model. The latest data from WMAP, with precision's higher than ever before, provides a motivation to determine theoretical higher order corrections to change in helium abundance and the related parameters. Here we evaluate the QED corrections to the change in these parameters during primordial nucleosynthesis using finite temperature effects at the two loop level. Relative variations in neutron decay rate, total energy density of the universe, relative change in neutrino temperature etc., with two loop corrections to electron mass, at the timescale when QED corrections were relevant, have been estimated.
Cite
@article{arxiv.1111.0248,
title = {Primordial Nucleosynthesis and Finite Temperature QED},
author = {Mahnaz Q. Haseeb and Obaidullah Jan and Omair Sarfaraz},
journal= {arXiv preprint arXiv:1111.0248},
year = {2013}
}
Comments
17 pages, 4 figures