Observational constraints in scalar tensor theory with tachyonic potential
General Relativity and Quantum Cosmology
2011-11-22 v1
Abstract
We study the dynamics of the scalar tensor cosmological model in the presence of tachyon field. In an alternative approach, in two exponential and power law form of the scalar field functions in the model, field equations are solved by simultaneously best fitting the model parameters with the most recent observational data. This approach gives us an observationally verified interpretation of the dynamics of the universe. We then discuss the best fitted of equation of state parameter, the statefinder parameters and the reconstructed scalar field in the model.
Keywords
Cite
@article{arxiv.1109.6317,
title = {Observational constraints in scalar tensor theory with tachyonic potential},
author = {H. Farajollahi and A. Salehi and A. Shahabi},
journal= {arXiv preprint arXiv:1109.6317},
year = {2011}
}
Comments
16 pages, 19 figures, Will be published in JCAP