Dynamics of inflation and dark energy from F(R,G) gravity
In this work we study certain classes of F(R,G) gravity which have appealing phenomenological features, with respect to the successful realization of the dark energy and of the inflationary era. Particularly, we discuss the general formalism and we demonstrate how several inflationary and dark energ...
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doaj-0d0694a4bd704c5bac869d209594a0582020-11-24T22:17:13ZengElsevierNuclear Physics B0550-32132019-01-01938935956Dynamics of inflation and dark energy from F(R,G) gravityS.D. Odintsov0V.K. Oikonomou1S. Banerjee2ICREA, Passeig Luis Companys, 23, 08010 Barcelona, Spain; Institute of Space Sciences (ICE, CSIC), C. Can Magrans s/n, 08193 Barcelona, Spain; Institute of Space Sciences of Catalonia (IEEC), Barcelona, SpainDepartment of Physics, Aristotle University of Thessaloniki, Thessaloniki 54124, Greece; Laboratory for Theoretical Cosmology, Tomsk State University of Control Systems and Radioelectronics (TUSUR), 634050 Tomsk, Russia; Tomsk State Pedagogical University, 634061 Tomsk, Russia; Corresponding author.Tata Institute of Fundamental Research, IndiaIn this work we study certain classes of F(R,G) gravity which have appealing phenomenological features, with respect to the successful realization of the dark energy and of the inflationary era. Particularly, we discuss the general formalism and we demonstrate how several inflationary and dark energy evolutions can be described in the context of F(R,G) gravity. Also we propose a unified model, in the context of which the early and late-time dynamics are controlled by the F(R,G) gravity, thus producing inflation and the dark energy era, while the intermediate era is approximately identical with standard Einstein–Hilbert gravity. Also we calculate the power spectrum of the primordial curvature perturbations corresponding to the unified F(R,G) gravity model we propose, which as we demonstrate is nearly scale invariant and compatible with the latest observational data constraints.http://www.sciencedirect.com/science/article/pii/S0550321318301998 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
S.D. Odintsov V.K. Oikonomou S. Banerjee |
spellingShingle |
S.D. Odintsov V.K. Oikonomou S. Banerjee Dynamics of inflation and dark energy from F(R,G) gravity Nuclear Physics B |
author_facet |
S.D. Odintsov V.K. Oikonomou S. Banerjee |
author_sort |
S.D. Odintsov |
title |
Dynamics of inflation and dark energy from F(R,G) gravity |
title_short |
Dynamics of inflation and dark energy from F(R,G) gravity |
title_full |
Dynamics of inflation and dark energy from F(R,G) gravity |
title_fullStr |
Dynamics of inflation and dark energy from F(R,G) gravity |
title_full_unstemmed |
Dynamics of inflation and dark energy from F(R,G) gravity |
title_sort |
dynamics of inflation and dark energy from f(r,g) gravity |
publisher |
Elsevier |
series |
Nuclear Physics B |
issn |
0550-3213 |
publishDate |
2019-01-01 |
description |
In this work we study certain classes of F(R,G) gravity which have appealing phenomenological features, with respect to the successful realization of the dark energy and of the inflationary era. Particularly, we discuss the general formalism and we demonstrate how several inflationary and dark energy evolutions can be described in the context of F(R,G) gravity. Also we propose a unified model, in the context of which the early and late-time dynamics are controlled by the F(R,G) gravity, thus producing inflation and the dark energy era, while the intermediate era is approximately identical with standard Einstein–Hilbert gravity. Also we calculate the power spectrum of the primordial curvature perturbations corresponding to the unified F(R,G) gravity model we propose, which as we demonstrate is nearly scale invariant and compatible with the latest observational data constraints. |
url |
http://www.sciencedirect.com/science/article/pii/S0550321318301998 |
work_keys_str_mv |
AT sdodintsov dynamicsofinflationanddarkenergyfromfrggravity AT vkoikonomou dynamicsofinflationanddarkenergyfromfrggravity AT sbanerjee dynamicsofinflationanddarkenergyfromfrggravity |
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1725785956303241216 |