Cosmological constraints on spontaneous R-symmetry breaking models

Yuta Hamada, Kohei Kamada, Tatsuo Kobayashi, Yutaka Ookouchi

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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.

Original languageEnglish
Article number043
JournalJournal of Cosmology and Astroparticle Physics
Volume2013
Issue number4
DOIs
Publication statusPublished - Apr 1 2013

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All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics

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