Abstract
We draw attention to the possibility that inflation (i.e., accelerated expansion) might continue after the end of slow roll, during a period of fast oscillations of the inflaton field . This phenomenon takes place when a mild nonconvexity inequality is satisfied by the potential . The presence of such a period of -oscillation-driven inflation can substantially modify reheating scenarios. In some models the effect of these fast oscillations might be imprinted on the primordial perturbation spectrum at cosmological scales.
- Received 12 December 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.3440
©1998 American Physical Society