Thermal inflation, baryogenesis and axions

2008/07/31 by Seong-Cheol Kim, Seongcheol Kim, Wan-Il Park +1 · 3 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1088/1126-6708/2009/01/015

published as JHEP 0901:015,2009 · 53 pages, 20 figures. Figures reformatted, minor changes in Section 3, references added

arxiv created 2008/11/04 · openalex publication_date 2009/01/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

In a previous paper, we proposed a simple extension of the Minimal Supersymmetric Standard Model which gives rise to thermal inflation and baryogenesis in a natural and remarkably consistent way. In this paper, we consider the λ_ϕ= 0 special case of our model, which is the minimal way to incorporate a Peccei-Quinn symmetry. The axino/flatino becomes the lightest supersymmetric particle with m_\axino ∼ 1 to 10 \GeV and is typically over-produced during the flaton decay. Interestingly though, the dark matter abundance is minimized for m_\axino ∼ 1 \GeV, f_a ∼ 10¹¹ to 10¹² \GeV and |μ| ∼ 400 \GeV to 2 \TeV at an abundance coincident with the observed abundance and with significant amounts of both axions and axinos. Futhermore, for these values the baryon abundance naturally matches the observed abundance.

Citations

• Monopoles, axions and intermediate mass dark matter
• A simple solution to the strong CP problem with a harmless axion
• Cosmological implications of dynamical supersymmetry breaking
• New BBN limits on physics beyond the standard model from 4He
• Review of Particle Physics

Cited by

• Density fluctuations in thermal inflation and non-Gaussianity
• Theμproblem and the axion in gauge mediation
• The μ problem and sneutrino inflation