Diagnostics and future evolution analysis of the two parametric models
Abstract
In this paper, we apply three diagnostics including , Statefinder hierarchy and the growth rate of perturbations into discriminating the two parametric models for the effective pressure with the CDM model. By using the diagnostic, we find that both the model 1 and the model 2 can be hardly distinguished from each other as well as the CDM model in terms of 68\% confidence level. As a supplement, by using the Statefinder hierarchy diagnostics and the growth rate of perturbations, we discover that not only can our two parametric models be well distinguished from CDM model, but also, by comparing with diagnostic, the model 1 and the model 2 can be distinguished better from each other. In addition, we also explore the fate of universe evolution of our two models by means of the rip analysis.
Cite
@article{arxiv.1602.02552,
title = {Diagnostics and future evolution analysis of the two parametric models},
author = {Guang Yang and Deng Wang and Xinhe Meng},
journal= {arXiv preprint arXiv:1602.02552},
year = {2016}
}