Exact solutions for the interacting tachyonic-dark matter system
Astrophysics
2009-11-10 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We find exact solutions leading to power law accelerated expansion for a homogeneous, isotropic and spatially flat universe, dominated by an interacting mixture of cold dark matter and a tachyonic field such that the ratio of the energy densities of both components at late times is constant and no coincidence problem arises.
Keywords
Cite
@article{arxiv.astro-ph/0404086,
title = {Exact solutions for the interacting tachyonic-dark matter system},
author = {Ramon Herrera and Diego Pavon and Winfried Zimdahl},
journal= {arXiv preprint arXiv:astro-ph/0404086},
year = {2009}
}
Comments
11 pages, no figues, to be published in Gen. Ralativ. Grav