Abstract
We investigate the scalar and tensor spectral indices of the quadratic inflation model in Eddington-inspired Born-Infeld (EiBI) gravity. We find that the EiBI corrections to the spectral indices are of second and first order in the slow-roll approximation for the scalar and tensor perturbations, respectively. This is very promising since the quadratic inflation model in general relativity provides a very nice fit for the spectral indices. Together with the suppression of the tensor-to-scalar ratio, EiBI inflation is agrees well with the observational data.
| Original language | English |
|---|---|
| Article number | 064046 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 92 |
| Issue number | 6 |
| DOIs | |
| State | Published - 25 Sep 2015 |
Bibliographical note
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