Cosmological models with Yang-Mills fields
High Energy Physics - Theory
2013-08-27 v2 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
Cosmological models with an SU(2) Yang-Mills field are studied. For a specific model with a minimally coupled Yang-Mills Lagrangian, which includes an arbitrary function of the second-order term and a fourth-order term, a corresponding reconstruction program is proposed. It is shown that the model with minimal coupling has no de Sitter solutions, for any nontrivial function of the second-order term. To get de Sitter solutions, a gravitational model with nonminimally coupled Yang-Mills fields is then investigated. It is shown that the model with non-minimal coupling has in fact a de Sitter solution, even in absence of the cosmological constant term.
Cite
@article{arxiv.1201.4302,
title = {Cosmological models with Yang-Mills fields},
author = {E. Elizalde and A. J. Lopez-Revelles and S. D. Odintsov and S. Yu. Vernov},
journal= {arXiv preprint arXiv:1201.4302},
year = {2013}
}
Comments
14 pages, v2: refs. added