Open AccessThe Perturbation of Material Density in f(R) Modified Gravity of Polynormal Exponential Form
Author(s) -
Van On Vo
Publication year - 2020
Publication title -
kalpa publications in engineering
Language(s) - English
Resource type - Conference proceedings
ISSN - 2515-1770
DOI - 10.29007/xqpk
Subject(s) - physics , exponential function , cosmic cancer database , perturbation (astronomy) , gravitation , horizon , cosmology , cosmological model , universe , perturbation theory (quantum mechanics) , metric expansion of space , theoretical physics , lambda cdm model , mathematical physics , dark energy , astrophysics , classical mechanics , quantum mechanics , mathematics , mathematical analysis , astronomy
In this paper, we investigate the linear perturbation of the material density of the universe in f(R) modified gravity of polynomial exponential form on the scale of distance below the cosmic horizon (sub-horizon). The results show that the model for the evolutionary aspects of the universe is slightly different from that in the standard cosmological model of ΛCDM. They can be used to show the difference between this modified gravitational model with the standard cosmological model of ΛCMD and other cosmological models. We also investigate the ration Ψ/ Φ and Geff / GN in the model and show that they are within allowable limits of experiments.