[[UTAPwiki/セミナー/初期宇宙・相対論速報]] Speaker: Jun'ichi Yokoyama (RESCEU) Title: Spontaneous genesis after G-inflation Abstract: In kinetically driven G-inflation, the Universe after inflation is dominated by the kinetic energy density of a free scalar field whose energy density is dissipated in proportion to $a^{-6}$ so that the cosmic expansion law is like $a(t) \propto t^{1/3}$. The reheating is achieved by gravitational particle production or through direct coupling preserving the shift symmetry of the model. We discuss spontaneous baryogenesis and asymmetric dark matter genesis may be possible if these charge densities have a derivative coupling with the inflaton. &br; |