Constraining scalar-tensor quintessence by cosmic clocks
Astrophysics
2009-11-13 v1 General Relativity and Quantum Cosmology
Abstract
Scalar-tensor quintessence models can be constrained by identifying suitable cosmic clocks which allow to select confidence regions for cosmological parameters. In particular, we constrain the characterizing parameters of non-minimally coupled scalar-tensor cosmological models which admit exact solutions of the Einstein field equations. Lookback time to galaxy clusters at low intermediate, and high redshifts is considered. The high redshift time-scale problem is also discussed in order to select other cosmic clocks such as quasars.
Cite
@article{arxiv.0706.2615,
title = {Constraining scalar-tensor quintessence by cosmic clocks},
author = {S. Capozziello and P. K. S. Dunsby and E. Piedipalumbo and C. Rubano},
journal= {arXiv preprint arXiv:0706.2615},
year = {2009}
}