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Inflation from an E-Model Potential of \(\alpha \)-Attractors

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Abstract

In this paper, we study the \(\alpha \)-attractors in the framework of the Randall–Sundrum type II braneworld model. We consider the simplest E-model of \(\alpha \)-attractors and apply the slow-roll approximation in high energy limit. In this scenario, we numerically investigate the inflationary parameters and show that high-energy brane corrections have significant effect on the parameter \(\alpha \); namely, lower values of \(\alpha \) are observationally preferred in this limit. The latter substantially reduces the tensor-to-scalar ratio of perturbations making the braneworld inflation compatible with observational data.

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The authors are grateful to their families for support.

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  1. LHEP-MS, Faculty of Science, Mohammed V University, Rabat, Morocco

    H. Es-sobbahi & S. E. Ennadifi

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  1. H. Es-sobbahi
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Es-sobbahi, H., Ennadifi, S.E. Inflation from an E-Model Potential of \(\alpha \)-Attractors. Arab J Sci Eng 47, 379–385 (2022). https://doi.org/10.1007/s13369-021-05484-z

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