Unified Model for Inflation and Dark Energy with Planck-Scale   Pseudo-Goldstone Bosons
  We present a model with a complex and a real scalar fields and a potential whose symmetry is explicitly broken by Planck-scale physics. For exponentially small breaking, the model accounts for the period of inflation in the early universe and for the period of acceleration of the late universe. 
Eduard Masso and Gabriel Zsembinszki