http://arxiv.org/abs/2005.04693
In this letter, we argue that the past of the Universe, extrapolated from standard physics and measured cosmological parameters, is a non-singular bounce. We also show that, in this framework, quite stringent constraints can be put on the reheating temperature and number of inflationary e-folds, basically fixing $T_{RH}\sim T_{GUT}$ and $N\sim 70$. We draw some conclusions about the shape of the inflaton potential and raise the “naturalness” issue in this context. Finally, we argue that this could open a very specific window on the “pre big bounce” universe.
A. Barrau
Tue, 12 May 20
16/64
Comments: N/A