Intermediate scale supersymmetric inflation, matterand dark energy

Abstract

We consider supersymmetric inflation models in which inflationoccurs at an intermediate scale and which provide a solution tothe µ problem and the strong CP problem. Such models areparticularly attractive since inflation, baryogenesis and therelic abundance of cold dark matter are all related by a set ofparameters which also affect particle physics colliderphenomena, neutrino masses and the strong CP problem. For suchmodels the natural situation is a universe containing mattercomposed of baryons, massive neutrinos, lightest superpartnercold dark matter and axions. The present-day relic abundances of these different forms of matter are (in principle) calculablefrom the supersymmetric inflation model together with ameasurement of the cosmic microwave background temperature and the Hubble constant. Fromthese relic abundances one can deduce the amount of the present-day dark energy density.