2015/02/12 by Masahiro Kawasaki, Masaki Yamada
Physics and Astronomy · #Astronomy #Astrophysics #Baryogenesis #Baryon #Baryon asymmetry #Black Holes and Theoretical Physics #Cosmic microwave background #Cosmology #Cosmology and Gravitation Theories #Dark energy #Dark matter #Galaxies: Formation, Evolution, Phenomena #Hubble's law #Inflation (cosmology) #Nuclear physics #Particle physics #Physics #Quantum mechanics #Term (time) #Theoretical physics #astro-ph.CO #hep-ph
paper · pdf · doi:10.1103/physrevd.91.083512
published as Phys. Rev. D 91, 083512 (2015) · 27 pages
arxiv created 2015/02/12 · openalex publication_date 2015/04/08 · arxiv updated 2015/04/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate the Affleck-Dine baryogenesis after D-term inflation with a positive Hubble-induced mass term for a B\ensuremath-L flat direction. It stays at a large field value during D-term inflation, and just after inflation ends it starts to oscillate around the origin of the potential due to the positive Hubble-induced mass term. The phase direction is kicked by higher-dimensional K"ahler potentials to generate the B\ensuremath-L asymmetry. The scenario predicts nonzero baryonic isocurvature perturbations, which would be detected by future observations of CMB fluctuations. We also provide a D-term inflation model which naturally explains the coincidence of the energy density of baryon and dark matter.