Cosmological models in Weyl geometrical scalar-tensor theory
General Relativity and Quantum Cosmology
2016-09-14 v2
Abstract
We investigate cosmological models in a recently proposed geometrical theory of gravity, in which the scalar field appears as part of the space-time geometry. We extend the previous theory to include a scalar potential in the action. We solve the vacuum field equations for different choices of the scalar potential and give a detailed analysis of the solutions. We show that in some cases a cosmological scenario is found that seems to suggest the appearance of a geometric phase transition. We build a toy model, in which the accelerated expansion of the early universe is driven by pure geometry.
Keywords
Cite
@article{arxiv.1602.06966,
title = {Cosmological models in Weyl geometrical scalar-tensor theory},
author = {M. L. Pucheu and F. A. P. Alves-Junior and A. B. Barreto and C. Romero},
journal= {arXiv preprint arXiv:1602.06966},
year = {2016}
}
Comments
16 pages, 19 figures