Possible evidence for a change in cosmic equation of state at decoupling
Astrophysics
2007-05-23 v2
Abstract
Indirect but significative evidence (from fusion research data, and from the known 4He abundance) relevant to primordial nucleosynthesis is examined. It is shown that this evidence supports a change in cosmic equation of state at decoupling, compatible with Einstein's cosmological equations, from ROm T^4 aprox. cte (ROm=ROr) prior to decoupling (t<taf), to ROmT^3 aprox. cte after (t>taf), being taf the atom formation time. Implications at the baryon threshold time (temperature) and beyond are discussed.
Keywords
Cite
@article{arxiv.astro-ph/9905161,
title = {Possible evidence for a change in cosmic equation of state at decoupling},
author = {J. A. Gonzalo and M. I. Marques},
journal= {arXiv preprint arXiv:astro-ph/9905161},
year = {2007}
}
Comments
4 pages, RevTex; minor corrections