  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.
