paper

Tensor-to-Scalar Ratio in Eddington-inspired Born-Infeld Inflation

arXiv:1408.2652 · doi:10.1140/epjc/s10052-014-3155-1

Abstract

We investigate the scalar perturbation of the inflation model driven by a massive-scalar field in Eddington-inspired Born-Infeld gravity. We focus on the perturbation at the attractor stage in which the first and the second slow-roll conditions are satisfied. The scalar perturbation exhibits the corrections to the chaotic inflation model in general relativity. We find that the tensor-to-scalar ratio becomes smaller than that of the usual chaotic inflation.

arXiv comment9 pages. revised version to appear in EPJC, with minor typo corrections. arXiv admin note: text overlap with arXiv:1404.6081

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