Chaotic exit to inflation: pre-inflationary Friedmann-Robertson-Walker universes

Abstract

We show that homogeneous and isotropic cosmological models with radiation and scalar field have, in general, two possible chaotic exits to inflation. These models may describe the early stages of inflation. The central point of our analysis is based on the possible existence of one or two saddle-centers points in the phase space of the models.

arXiv comment3 pages, 4 figures, lateX (mprocl.sty). To appear in the proceedings of the Eighth Marcel Grossmann Meeting, Jeruslaem, June 1997