2011/12/31 by Masato Arai, Shinsuke Kawai, Nobuchika Okada · 21 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology and Gravitation Theories #Gravitation #Higgs boson #Inflation (cosmology) #Neutrino #Particle physics #Particle physics theoretical and experimental studies #Physics #Planck #Planck mass #Quantum mechanics #Standard Model (mathematical formulation) #Supergravity #Supersymmetry #Theoretical physics #Unitarity #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.86.063507
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 86(6) (American Physical Society) · 5 pages, 3 figures, essentially the published version
openalex publication_date 2012/09/07 · arxiv created 2012/09/09 · arxiv updated 2013/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We propose a cosmological inflationary scenario based on the supergravity-embedded Standard Model supplemented by the right-handed neutrinos. We show that with an appropriate K"ahler potential the L\mathrm\text\ensuremath-Hu direction gives rise to successful inflation that is similar to the recently proposed gravitationally coupled Higgs inflation model but is free from the unitarity problem. The mass scale MR of the right-handed neutrinos is subject to the seesaw relation and the present 2\mathrm\text\ensuremath-\ensuremathσ constraint from the WMAP7\ensuremath-BAO\ensuremath-H0 data sets its lower bound MR\ensuremath\gtrsim1 TeV. Generation of the baryon asymmetry is naturally implemented in this model. We expect that within a few years new observational data from the Planck satellite will clearly discriminate this model from other existing inflationary models arising from the same Lagrangian, and possibly yield stringent constraints on MR.