Coupled quintessence and the coincidence problem
Astrophysics
2009-11-07 v1 High Energy Physics - Phenomenology
Abstract
We consider a model of interacting cosmological constant/quintessence, where dark matter and dark energy behave as, respectively, two coexisting phases of a fluid, a thermally excited Bose component and a condensate, respectively. In a simple phenomenological model for the dark components interaction we find that their energy density evolution is strongly coupled during the universe evolution. This feature provides a possible way out for the coincidence problem affecting many quintessence models.
Keywords
Cite
@article{arxiv.astro-ph/0212518,
title = {Coupled quintessence and the coincidence problem},
author = {G. Mangano and G. Miele and V. Pettorino},
journal= {arXiv preprint arXiv:astro-ph/0212518},
year = {2009}
}
Comments
15 pages, 11 figures