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• W2894982778 abstract "Analytic infinite derivative (AID) non-local quadratic curvature gravity in Weyl basis is known to be ghost free, superrenormalizable or finite and perturbatively Unitary and as such it is Ultra-Violet (UV) complete. Recently $R+R^2$ (Starobinsky) inflation was successfully embedded in AID non-local gravity and the corresponding observables were computed. Here in this paper, we derive the form factors compatible within near de Sitter aproaximation and prove that the theory must contain a scalaron that drives inflationary expansion. Further more we consider the form factors (AID non-local operators) proposed by Tomboulis in hep-th/9702146 and compute the corresponding predictions of tensor to scalar ratio and tensor tilt $left( n_t,,r right)$ where the scalar tilt remains the same as the local Starobinsky model. Anticipating future CMB probes such will be able to test non-local Starobinsky inflation we constrain the scale of non-locality to be $10^{14},GeVlesssimmathcal{M}lesssim 5times 10^{14},GeV$ and $10^{-7}lesssim r lesssim 0.07$ for different form factors. We found that it possible to have a blue or red tensor tilt $left( n_tgtrless 0 right)$ depending on the scale of non-locality and the form factor. We also comment on Higgs inflation in non-local context." @default.
• W2894982778 created "2018-10-12" @default.
• W2894982778 creator A5004859906 @default.
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• W2894982778 date "2018-10-04" @default.
• W2894982778 modified "2023-09-27" @default.
• W2894982778 title "Non-local Starobinsky inflation in the light of future CMB" @default.
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