2004/12/31 by Takeshi Fukuyama, T. Kikuchi, Tatsuru Kikuchi · 10 citations
Physics and Astronomy · #Axion #Bar (unit) #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Inflaton #Neutrino #Particle physics #Particle physics theoretical and experimental studies #Physics #Supersymmetry #Symmetry breaking #Theoretical physics #astro-ph #hep-ph
paper · pdf · doi:10.1088/1126-6708/2005/05/017
published in Journal of High Energy Physics 2005(05), 017 (Springer Nature) · 8 pages, no figure; the version to appear in JHEP
arxiv created 2005/04/22 · openalex publication_date 2005/05/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The connection between the axion and right-handed neutrinos is explored in the framework of the minimal SUSY SO(10) model. The former is related to the Peccei-Quinn (PQ) solution to the strong CP problem and the latter is to the light Majorana neutrinos through the see-saw mechanism. In this model, a relative phase between (\bf 10,1,3) (≡ \bf ΔR) ⊂ \bf 126 and (\bf 10,1,3) (≡ \bf ΔR) ⊂ \bf 126 multiplets of \rm SU(4) × \rm SU(2)L × \rm SU(2)R ⊂ \rm SO(10) becomes a physical degree of freedom identified with the axion. Then, the PQ symmetry breaking scale (Λ\rm PQ) and the B-L symmetry breaking scale (Λ\rm B-L) coincide through the VEV of \bf ΔR. The scalar partner of the lightest right-handed neutrino is regarded as the inflaton, which gives a consistent density fluctuation for the CMB.