Inflation and majoron dark matter in the seesaw mechanism
  We propose that inflation and dark matter have a common origin, connected to the neutrino mass generation scheme. As a model we consider spontaneous breaking of global lepton number within the seesaw mechanism. We show that it provides an acceptable inflationary scenario consistent with the recent CMB B-mode observation by the BICEP2 experiment. The scheme may also account for the baryon asymmetry of the Universe through leptogenesis for reasonable parameter choices. 
Sofiane M. Boucenna, Stefano Morisi, Qaisar Shafi and Jose W.F. Valle
hep-ph astro-ph.CO