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.
Noether symmetry approach in matter-dominated cosmology with variable G and Lambda / Bonanno, A; Esposito, G; Rubano, C; Scudellaro, P. - In: GENERAL RELATIVITY AND GRAVITATION. - ISSN 0001-7701. - 39:2(2007), pp. 189-209. [10.1007/s10714-006-0386-y]
Noether symmetry approach in matter-dominated cosmology with variable G and Lambda
ESPOSITO GSecondo
;
2007
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.File | Dimensione | Formato | |
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