http://arxiv.org/abs/2203.01598
We consider a cosmological model consisting of two scalar fields defined in the hyperbolic plane known as hyperbolic inflation. For the background space we consider a homogeneous and isotropic spacetime with nonzero curvature. We study the asymptotic behaviour of the dynamics and we search for attractors in the expanding regime. We prove that the hyperobolic inflation period is an unstable solution and the flatness problem is solved when the universe goes through a second inflationary era or when exits the inflation the universe reaches a matter era.
A. Paliathanasis and G. Leon
Fri, 4 Mar 22
38/63
Comments: 10 pages, 1 figure