A Non-minimally Coupled Potential for Inflation and Dark Energy after Planck 2015: A Comprehensive Study
| Autor: | Eshaghi, Mehdi, Zarei, Moslem, Riazi, Nematollah, Kiasatpour, Ahmad |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | JCAP11(2015)037 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1475-7516/2015/11/037 |
| Popis: | 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 $r\approx 0.01$ 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 $\xi$ of the model. We also study the preheating stage predicted by this kind of potentials using numerical calculations. Comment: 11 pages, 5 figures |
| Databáze: | arXiv |
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