A cosmological pathway to testable leptogenesis
  Leptogenesis could have occurred at temperatures much lower than generally
thought, if the cosmological history of the Universe underwent a period of
accelerated expansion, as is predicted for example in a class of scalar-tensor
theories of gravitation. We discuss how non-standard cosmologies can open new
pathways for low scale leptogenesis. Within these scenarios, direct tests of
leptogenesis could also provide information on the very early times Universe
evolution, corresponding to temperatures larger than the TeV.
