Linear and non-linear perturbations in dark energy models
Cosmology and Nongalactic Astrophysics
2016-11-09 v2 General Relativity and Quantum Cosmology
Abstract
In this work we discuss observational aspects of three time-dependent parameterisations of the dark energy equation of state . In order to determine the dynamics associated with these models, we calculate their background evolution and perturbations in a scalar field representation. After performing a complete treatment of linear perturbations, we also show that the non-linear contribution of the selected parameterisations to the matter power spectra is almost the same for all scales, with no significant difference from the predictions of the standard CDM model.
Cite
@article{arxiv.1605.01475,
title = {Linear and non-linear perturbations in dark energy models},
author = {Celia Escamilla-Rivera and Luciano Casarini and Julio C. Fabris and Jailson S. Alcaniz},
journal= {arXiv preprint arXiv:1605.01475},
year = {2016}
}
Comments
18 pages, 6 figures. Accepted in JCAP