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|Paper IPM / Astronomy / 13911||
In this work we consider an inflationary potential in fractional form coupled non-minimally to gravity. This potential has a dominant constant energy density at early times which can realize successful inflation. We show that this potential 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-minimally coupling parameter ξ of the model. We also study the preheating stage predicted by this kind of potentials using numerical calculations.
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