Current tensions in cosmology, including H0 and σ8, provide one of the strong reasons to suspect the existence of physics beyond the standard model of cosmology (ΛCDM). In this paper, we investigate if there is a relation between these tensions and beyond cold dark matter scenarios. To model non-CDM, we assume a decaying dark matter (DDM) which is unstable and may decay into two daughter particles, a combination of cold dark matter, warm dark matter, and dark radiation, to explore a vast era of possibilities. We checked our model against CMB data and could show that decaying dark matter seems not a promising candidate to address the cosmological tensions.
@article{arxiv.2203.09439,
title = {Can decaying dark matter scenarios alleviate both $H_0$ and $\sigma_8$ tensions?},
author = {Zahra Davari and Nima Khosravi},
journal= {arXiv preprint arXiv:2203.09439},
year = {2022}
}