Regular Article - Theoretical Physics
Tensor-to-scalar ratio in Eddington-inspired Born–Infeld inflation
Institute of Convergence Fundamental Studies and School of Liberal Arts, Seoul National University of Science and Technology, Seoul, 139-743, Korea
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Accepted: 27 October 2014
Published online: 12 November 2014
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.
© SIF and Springer-Verlag Berlin Heidelberg, 2014