A non-minimally coupled potential for inflation and dark energy after Planck 2015: a comprehensive study
- Department of Physics, Faculty of Science, University of Isfahan, Isfahan, 81746-73441 (Iran, Islamic Republic of)
- Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 (Iran, Islamic Republic of)
- Department of Physics, Shahid Beheshti University, Tehran, 19839 (Iran, Islamic Republic of)
In this work we introduce a new plateau-like inflationary model including a quadratic scalar potential coupled non-minimally to gravity. This potential has a dominant constant energy density at early times which can realize successful inflation. It also includes an infinitesimal non-zero term V{sub 0} responsible for explaining dark energy which causing the universe to expand accelerating at the late time. We show that this model predicts small tensor-to-scalar ratio of the order of r≈ 0.01 which is fully consistent with Planck constraints. Using the lower and upper bounds on reheating temperature, we provide additional constraints on the non-minimal coupling parameter ξ of the model. We also study the preheating stage predicted by this kind of potentials using numerical calculations.
- OSTI ID:
- 22525166
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2015, Issue 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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