f(R) cosmology by Noether's symmetry
General Relativity and Quantum Cosmology
2010-02-10 v3
Abstract
A general approach to find out exact cosmological solutions in f(R)-gravity is discussed. Instead of taking into account phenomenological models, we assume, as a physical criterium, the existence of Noether symmetries in the cosmological f(R) Lagrangian. As a result, the presence of such symmetries selects viable models and allow to solve the equations of motion. We discuss also the case in which no Noether charge is present but general criteria can be used to achieve solutions.
Cite
@article{arxiv.0804.2163,
title = {f(R) cosmology by Noether's symmetry},
author = {Salvatore Capozziello and Antonio De Felice},
journal= {arXiv preprint arXiv:0804.2163},
year = {2010}
}
Comments
23 pages, uses RevTeX