paper

Observational Restrictions and Slow-Roll D-brane Inflation in the Special Gravity

arXiv:2507.23321 · doi:10.1007/s10714-025-03448-4

Abstract

We shall investigate the inflation for the D-brane model, motivated by the modified gravity . This gravity has been recently introduced in the literature. The feasibility of the D-brane inflation theory in the -gravity has been studied in conjunction with the most recent Planck data. We shall analyze the slow-roll inflation in the context of the -gravity, via the D-brane model. Then, we shall calculate the inflation dynamics to obtain the scalar spectral index ``'' and the tensor-to-scalar ratio ``''. Besides, we investigate the dynamics of the reheating for this model. Our model accurately covers the left-hand side of the Planck data and the D-brane inflation.

27 pages, LaTex2e, 7 figures

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