Inflationary Tensor Perturbation in Eddington-inspired Born-Infeld
  gravity
  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.
