Stability Analysis in Tachyonic Potential Chameleon cosmology
General Relativity and Quantum Cosmology
2015-05-28 v2
Abstract
We study general properties of attractors for tachyonic potential chameleon scalar-field model which possess cosmological scaling solutions. An analytic formulation is given to obtain fixed points with a discussion on their stability. The model predicts a dynamical equation of state parameter with phantom crossing behavior for an accelerating universe. We constrain the parameters of the model by best fitting with the recent data-sets from supernovae and simulated data points for redshift drift experiment generated by Monte Carlo simulations.
Cite
@article{arxiv.1105.4045,
title = {Stability Analysis in Tachyonic Potential Chameleon cosmology},
author = {H. Farajollahi and A. Salehi and F. Tayebi and A. Ravanpak},
journal= {arXiv preprint arXiv:1105.4045},
year = {2015}
}
Comments
20 pages, 13 figures