Inflationary Tensor Perturbation in Eddington-inspired Born-Infeld gravity
arXiv:1404.6081 · doi:10.1103/PhysRevD.90.024063
Abstract
We investigate the tensor perturbation in the inflation model driven by a massive-scalar field in Eddington-inspired Born-Infeld gravity. For short wave-length modes, the perturbation feature is very similar to that of the usual chaotic inflation. For long wave-length modes, the perturbation exhibits a peculiar rise in the power spectrum which may leave a signature in the cosmic microwave background radiation.
14 pages, 4 figures