This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.

Cosmological constraints on spontaneous R-symmetry breaking models

, , and

Published 29 April 2013 Published under licence by IOP Publishing Ltd
, , Citation Yuta Hamada et al JCAP04(2013)043 DOI 10.1088/1475-7516/2013/04/043

1475-7516/2013/04/043

Abstract

We study general constraints on spontaneous R-symmetry breaking models coming from the cosmological effects of the pseudo Nambu-Goldstone bosons, R-axions. They are substantially produced in the early Universe and may cause several cosmological problems. We focus on relatively long-lived R-axions and find that in a wide range of parameter space, models are severely constrained. In particular, R-axions with mass less than 1 MeV are generally ruled out for relatively high reheating temperature, TR > 10 GeV.

Export citation and abstract BibTeX RIS

10.1088/1475-7516/2013/04/043