2020/07/14 by Shinichi Nojiri, S. D. Odintsov, V. K. Oikonomou +1 · 1 citation
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1103/physrevd.102.023540
published as Phys. Rev. D 102, 023540 (2020) · PRD to appear
arxiv created 2020/07/14 · arxiv updated 2020/08/05
In the present paper, we use the holographic approach to describe the early-time acceleration and the late-time acceleration eras of our Universe in a unified manner. Such ``holographic unification'' is found to have a correspondence with various higher curvature cosmological models with or without matter fields. The corresponding holographic cut-offs are determined in terms of the particle horizon and its derivatives, or the future horizon and its derivatives. As a result, the holographic energy density we propose is able to merge various cosmological epochs of the Universe from a holographic point of view. We find the holographic correspondence of several F(R) gravity models, including axion-F(R) gravity models, of several Gauss-Bonnet F(G) models and finally of F(T) models, and in each case we demonstrate that it is possible to describe in a unified way inflation and late-time acceleration in the context of the same holographic model.