Affleck-Dine baryogenesis after D-term inflation and solutions to the baryon-dark matter coincidence problem

作者：Kawasaki Masahiro^*; Yamada Masaki

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2015, 91(8): 083512.

DOI：10.1103/PhysRevD.91.083512

We investigate the Affleck-Dine baryogenesis after D-term inflation with a positive Hubble-induced mass term for a B - 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 Kahler potentials to generate the B - 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.

• 出版日期2015-4-8