Axion Cosmology with a Stronger QCD in the Early Universe
High Energy Physics - Phenomenology
2015-06-25 v1 Astrophysics
High Energy Physics - Theory
Abstract
We examine in the context of supersymmetric models whether the usual cosmological upper bound on the axion decay constant can be relaxed by assuming a period of stronger QCD in the early universe. By evaluating the axion potential in the early universe and also taking into account the dilaton potential energy, it is argued that a stronger QCD is not useful for raising up the bound.
Cite
@article{arxiv.hep-ph/9606372,
title = {Axion Cosmology with a Stronger QCD in the Early Universe},
author = {Kiwoon Choi and Hang Bae Kim and Jihn E. Kim},
journal= {arXiv preprint arXiv:hep-ph/9606372},
year = {2015}
}
Comments
23 pages, ReVTeX, 2 JPEG figures