2015/05/31 by Mehdi Es-haghi, Mehdi Eshaghi, Moslem Zarei +3 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Coupling (piping) #Dark energy #Fifth force #Galaxies: Formation, Evolution, Phenomena #Infinitesimal #Inflation (cosmology) #Minimal coupling #Physics #Planck #Quadratic equation #Quantum mechanics #Scalar (mathematics) #Scalar field #Theoretical physics #astro-ph.CO #hep-th
paper · pdf · doi:10.1088/1475-7516/2015/11/037
published as JCAP11(2015)037 · 11 pages, 5 figures
arxiv created 2015/09/30 · openalex publication_date 2015/11/24 · arxiv updated 2015/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 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.