Dark matter and baryon-number generation in quintessential inflation via
  hierarchical right-handed neutrinos
  Incorporating three generations of right-handed Majorana neutrinos to
quintessential inflation, we construct a model which simultaneously explains
inflation, dark energy, dark matter and baryogenesis. These neutrinos have
hierarchical masses $M_3 \sim 10^{13}$GeV, $M_2 \sim 10^{11}$GeV, $M_1 \sim
10$keV and are produced by gravitational particle production in the kination
regime after inflation. The heaviest, the intermediate, and the lightest
account for reheating, CP violation of leptogenesis, and dark matter,
respectively. This model can be tested in various ways with forthcoming
observations.
