  We consider the Standard Models of particle physics and hot big bang
cosmology, and review the theoretical and experimental motivations for
extending these models to include supersymmetry and inflation. An obvious
extension would be to unite these two models into a single all-encompassing
theory. We identify a list of theoretical challenges that such a theory must
address, which we illustrate with a simple model - a variant of the
next-to-minimal supersymmetric Standard Model - that addresses these
challenges.
