Unified Model for Inflation and Dark Energy with Planck-Scale Pseudo-Goldstone Bosons

Abstract

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.

Comments: 15 pages, 4 figures, RevTeX4; some references added