Inflation from High-Scale Supersymmetry Breaking
  Supersymmetry breaking close to the scale of grand unification can explain
cosmic inflation. As we demonstrate in this paper, this can be achieved in
strongly coupled supersymmetric gauge theories, such that the energy scales of
inflation and supersymmetry breaking are generated dynamically. As a
consequence, both scales are related to each other and exponentially suppressed
compared to the Planck scale. As an example, we consider a dynamical model in
which gauging a global flavor symmetry in the supersymmetry-breaking sector
gives rise to a Fayet-Iliopoulos D term. This results in successful D-term
hybrid inflation in agreement with all theoretical and phenomenological
constraints. The gauged flavor symmetry can be identified with U(1)_B-L, where
B and L denote baryon and lepton number, respectively. In the end, we arrive at
a consistent cosmological scenario that provides a unified picture of
high-scale supersymmetry breaking, viable D-term hybrid inflation, spontaneous
B-L breaking at the scale of grand unification, baryogenesis via leptogenesis,
and standard model neutrino masses due to the type-I seesaw mechanism.
