Testing Dark Energy Models through Large Scale Structure
Abstract
We explore the scalar field quintessence freezing model of dark energy with the inverse Ratra-Peebles potential. We study the cosmic expansion and the large scale structure growth rate. We use recent measurements of the growth rate and the baryon acoustic oscillation peak positions to constrain the matter density parameter and the model parameter that describes the steepness of the scalar field potential. We solve jointly the equations for the background expansion and for the growth rate of matter perturbations. The obtained theoretical results are compared with the observational data. We perform the Baysian data analysis to derive constraints on the model parameters.
Cite
@article{arxiv.1511.09317,
title = {Testing Dark Energy Models through Large Scale Structure},
author = {Olga Avsajanishvili and Lado Samushia and Natalia A. Arkhipova and Tina Kahniashvili},
journal= {arXiv preprint arXiv:1511.09317},
year = {2025}
}
Comments
8 pages, 10 figures, talk given at the 5th Gamow International Conference, Odessa, Ukraine, August 2015