Noether symmetry approach in matter-dominated cosmology with variable G and Lambda
arXiv:astro-ph/0612091 · doi:10.1007/s10714-006-0386-y
Abstract
In the framework of renormalization-group improved cosmologies, we use the Noether symmetry approach to get exact and general integration of the matter-dominated cosmological equations. This is performed by using an expression of Lambda=Lambda(G) determined by the method itself. We also work out a comparison between such a model and the concordance LambdaCDM model as to the magnitude-redshift relationship, hence showing that no appreciable differences occur.
22 pages, 2 figures