Noether symmetry approach in matter-dominated cosmology with variable G and Lambda

Details Noether symmetry approach in matter-dominated cosmology with variable G and Lambda Noether symmetry approach in matter-dominated cosmology with variable G and Lambda

2006-12-04

arxiv.org/abs/astro-ph/0612091v1

Gen.Rel.Grav.39:189-209,2007

Astronomy and Astrophysics

Astrophysics

22 pages, 2 figures

Scientific paper

10.1007/s10714-006-0386-y

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.

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