Spectral indices in Eddington-inspired Born-Infeld inflation
arXiv:1506.07061 · doi:10.1103/PhysRevD.92.064046
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 agrees well with the observational data.
(v1) 9 pages, 1 figure; (v2) references added, to appear in Physical Review D
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Cited by in corpus (10)
- Born-Infeld inspired modifications of gravity
- Einstein-Born-Infeld-Massive Gravity: adS-Black Hole Solutions and their Thermodynamical properties
- Inner Structure of Black Holes in Eddington-inspired Born-Infeld gravity: the role of mass inflation
- Mass inflation in Eddington-inspired Born-Infeld black holes: analytical scaling solutions
- Born-Infeld cosmology with scalar Born-Infeld matter
- Singular Instantons in Eddington-inspired-Born-Infeld Gravity
- Motion of Spinning Particles around Electrically Charged Black Hole in Eddington-inspired Born-Infeld Gravity
- Scalar perturbations of Eddington-inspired Born-Infeld braneworld
- Born-Infeld gravity with a Brans-Dicke scalar
- Threshold of primordial black hole formation in Eddington-inspired-Born-Infeld gravity