Is non-particle dark matter equation of state parameter evolving with time?
General Physics
2021-08-18 v1
Abstract
Recently, the so-called Hubble Tension, i.e. the mismatch between the local and the cosmological measurements of the Hubble parameter, has been resolved when non-particle dark matter is considered which has a negative equation of state parameter (). We investigate if such a candidate can successfully describe the galactic flat rotation curves. It is found that the flat rotation curve feature puts a stringent constraint on the dark matter equation of state parameter and is not consistent with flat rotational curves, observed around the galaxies. However, a dynamic of non-particle dark matter may overcome the Hubble tension without affecting the flat rotation curve feature.
Keywords
Cite
@article{arxiv.2108.04686,
title = {Is non-particle dark matter equation of state parameter evolving with time?},
author = {Souvik Ghose and Arunabha Bhadra},
journal= {arXiv preprint arXiv:2108.04686},
year = {2021}
}
Comments
6 pages, 1 figure, Accepted for publication in EPJC