Aspects of Geometric Inflation
High Energy Physics - Theory
2021-01-06 v2 General Relativity and Quantum Cosmology
Abstract
We revisit the recently proposed mechanism of Geometric Inflation. On general grounds, we show that obtaining the right amount of inflation demands an exceedingly large initial energy density. We introduce a scalar field and study the combined action of both mechanisms. Besides fixing the aforementioned issue, a cascading process occurs whose last step seems undistinguishable from ordinary large field inflation. Strikingly, the scalar field remains approximately constant while Geometric Inflation rules the dynamics. This ultimately leads to the possibility of reducing the initial value of the scalar field and its excursion. We discuss the main features of this hybrid scenario.
Keywords
Cite
@article{arxiv.2006.10007,
title = {Aspects of Geometric Inflation},
author = {Jose D. Edelstein and David Vázquez Rodríguez and Alejandro Vilar López},
journal= {arXiv preprint arXiv:2006.10007},
year = {2021}
}
Comments
20 pages, 3 figures; v2: minor amendments and additions