Late-time acceleration in the coupled Cubic Galileon models
General Relativity and Quantum Cosmology
2013-12-16 v2 Cosmology and Nongalactic Astrophysics
Abstract
We investigate the linearly and quadratically coupled cubic Galileon models that include linear potentials. These models may explain the late-time acceleration. In these cases, we need two equations of state parameter named the native and effective equations of state to test whether the universe is accelerating or not because there is coupling between the cold dark matter and Galileon. It turns out that there is no transition from accelerating phase to phantom phase in the future.
Cite
@article{arxiv.1307.8312,
title = {Late-time acceleration in the coupled Cubic Galileon models},
author = {Kyoung Yee Kim and Hyung Won Lee and Yun Soo Myung},
journal= {arXiv preprint arXiv:1307.8312},
year = {2013}
}
Comments
14pages, 5figures, version to appear in PRD