Cosmological constraints on spontaneous R-symmetry breaking models

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, $T_R>10$ GeV.

29 pages, 9 figures; v2:comments, references, and a figure added, published in JCAP

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Cited by in corpus (5)

• Mixed axion/gravitino dark matter from SUSY models with heavy axinos
• Cosmic R-string in thermal history
• More on cosmological constraints on spontaneous R-symmetry breaking models
• Discrete Gauge Symmetry and Aharonov-Bohm Radiation in String Theory
• Radiation of Supersymmetric Particles from Aharonov-Bohm R-string