Qualitative evolution in f(R) cosmologies
General Relativity and Quantum Cosmology
2016-02-03 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We investigate the qualitative evolution of (D+1)-dimensional cosmological models in f(R) gravity for the general case of the function f(R). The analysis is specified for various examples, including the (D+1)-dimensional generalization of the Starobinsky model, models with polynomial and exponential functions. The cosmological dynamics are compared in the Einstein and Jordan representations of the corresponding scalar-tensor theory. The features of the cosmological evolution are discussed for Einstein frame potentials taking negative values in certain regions of the field space.
Cite
@article{arxiv.1602.00685,
title = {Qualitative evolution in f(R) cosmologies},
author = {R. M. Avagyan and E. V. Chubaryan and G. H. Harutyunyan and A. A. Saharian},
journal= {arXiv preprint arXiv:1602.00685},
year = {2016}
}
Comments
17 pages, 3 figures