http://arxiv.org/abs/2303.13008
In this work, we consider homogeneous oscillations of the inflaton field after inflation. In particular, we obtain an analytical result for the (average) equation of state for the oscillating inflaton field for the simplest $\alpha$-attractor T-model. The result is useful for the study of its post-inflationary evolution. The most dramatic possibility is that during inflaton field oscillation, the (average) equation of state is that of a cosmological constant. This implies the end of slow-roll inflation in this model could be the beginning of oscillating inflation.
C. Lin
Fri, 24 Mar 23
17/56
Comments: 9 pages, 3 figures