Inflation and dark energy from three-forms
  Three-forms can give rise to viable cosmological scenarios of inflation and
dark energy with potentially observable signatures distinct from standard
single scalar field models. In this study, the background dynamics and linear
perturbations of self-interacting three-form cosmology are investigated. The
phase space of cosmological solutions possesses (super)-inflating attractors
and saddle points which can describe three-form driven inflation or dark
energy. The quantum generation and the classical evolution of perturbations is
considered. The scalar and tensor spectra from a three-form inflation and the
impact from the presence of a three-form on matter perturbations are computed.
Stability properties and equivalence of the model with alternative formulations
are discussed.
