2019/03/10 by Igor V. Fomin, Sergey V. Chervon · 1 citation
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1103/physrevd.100.023511
published as Phys. Rev. D 100, 023511 (2019) · 4 figures
arxiv created 2019/03/10 · arxiv updated 2019/07/17
We study the special class of the exact solutions in cosmological models based on the Generalized Scalar-Tensor Gravity with non-minimal coupling of a scalar field to the Ricci scalar and to the Gauss-Bonnet scalar in 4D Friedmann universe corresponding to similar ones in GR. The parameters of cosmological perturbations in such models correspond to the case of Einstein gravity with a high precision. As the example of proposed approach, we obtain the exact solutions for the power-law and exponential power-law inflation.