pith. sign in

arxiv: 1008.1432 · v2 · pith:PNZ4LOOWnew · submitted 2010-08-09 · 🌌 astro-ph.CO · gr-qc· hep-th

Uniting cosmological epochs through the twister solution in cosmology with non-minimal coupling

classification 🌌 astro-ph.CO gr-qchep-th
keywords dominationepochsmatterpointsradiationcosmologicalcouplingcritical
0
0 comments X
read the original abstract

We investigate dynamics of a flat FRW cosmological model with a barotropic matter and a non-minimally coupled scalar field (both canonical and phantom). In our approach we do not assume any specific form of a potential function for the scalar field and we are looking for generic scenarios of evolution. We show that dynamics of universe can be reduced to a 3-dimensional dynamical system. We have found the set of fixed points and established their character. These critical points represent all important epochs in evolution of the universe : (a) a finite scale factor singularity, (b) an inflation (rapid-roll and slow-roll), (c) a radiation domination, (d) a matter domination and (e) a quintessence era. We have shown that the inflation, the radiation and matter domination epochs are transient ones and last for a finite amount of time. The existence of the radiation domination epoch is purely the effect of a non-minimal coupling constant. We show the existence of a twister type solution wandering between all these critical points.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.