Multi-scalar field cosmology from SFT: an exactly solvable approximation
  We consider the appearance of multiple scalar fields in SFT inspired
non-local models with a single scalar field at late times. In this regime all
the scalar fields are free. This system minimally coupled to gravity can be
analyzed approximately or numerically. The main result of this note is the
introduction of an exactly solvable model which obeys an exact solution in the
cosmological context for the Friedmann equations and that reproduces the
behavior expected from SFT in the asymptotic regime. Different applications of
such a potential to multi-field cosmological models are discussed.
