Models of coupled dark matter to dark energy
Cosmology and Nongalactic Astrophysics
2013-10-11 v2
Abstract
We present three distinct types of models of dark energy in the form of a scalar field which is explicitly coupled to dark matter. Our construction draws from the pull-back formalism for fluids and generalises the fluid action to involve couplings to the scalar field. We investigate the cosmology of each class of model both at the background and linearly perturbed level. We choose a potential for the scalar field and a specific coupling function for each class of models and we compute the Cosmic Microwave Background and matter power spectra.
Keywords
Cite
@article{arxiv.1307.0458,
title = {Models of coupled dark matter to dark energy},
author = {A. Pourtsidou and C. Skordis and E. J. Copeland},
journal= {arXiv preprint arXiv:1307.0458},
year = {2013}
}
Comments
15 pages, 10 figures; version accepted for publication in PRD