Testing dark energy after pre-recombination early dark energy
Cosmology and Nongalactic Astrophysics
2022-09-01 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
In the studies on pre-recombination early dark energy (EDE), the evolution of Universe after recombination is usually regarded as -like, which corresponds that the equation of state of dark energy responsible for current accelerated expansion is . However, in realistic models, might be evolving. We consider the parametrizations of with respect to the redshift in Axion-like EDE and AdS-EDE models, respectively. We performed the Monte Carlo Markov chain analysis with recent cosmological data, and found that the bestfit is compatible with (the cosmological constant) and the evolution of is only marginally favored, which so has little effect on lifting the bestfit value of .
Keywords
Cite
@article{arxiv.2201.07079,
title = {Testing dark energy after pre-recombination early dark energy},
author = {Hao Wang and Yun-Song Piao},
journal= {arXiv preprint arXiv:2201.07079},
year = {2022}
}
Comments
18 pages, 7 figures