On the viability of the evolution of the universe with Geometric Inflation

We perform a general analysis of the cosmological viability of Geometric Inflation. We show that the evolution of the universe, from inflation to the present day, can be seen from the addition of an infinite tower of curvature invariants into the Hilbert–Einstein action. The main epochs of the Unive...

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Bibliographic Details
Published in:PHYSICS OF THE DARK UNIVERSE 2021-12, Vol.34, p.100887, Article 100887
Main Author: Jaime, Luisa G.
Format: Article
Language:English
Subjects:
Cosmology
Higher-curvature gravity
Inflation
Modified gravity
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Summary:We perform a general analysis of the cosmological viability of Geometric Inflation. We show that the evolution of the universe, from inflation to the present day, can be seen from the addition of an infinite tower of curvature invariants into the Hilbert–Einstein action. The main epochs of the Universe can be reproduced: Inflation, Big Bang Nucleosynthesis, and Late-time acceleration driven by the cosmological constant. The slow-roll condition is a robust prediction of the theory. Inflation possesses a graceful exit with enough number of e−folds between the limit imposed by the Planck density and the exit of the exponential expansion to solve the horizon problem and the absence of topological defects. We also provide some scenarios where the energy scale of the theory can be calibrated.
ISSN:2212-6864
2212-6864
DOI:10.1016/j.dark.2021.100887