Noether symmetry approach in pure gravity with variable G and Lambda

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dc.creatorBonanno, Alfio
dc.creatorEsposito, Giampiero
dc.creatorRubano, Claudio
dc.creatorScudellaro, Paolo
dc.date2006-10-03
dc.date2007-02-07
dc.date.accessioned2026-07-07T10:24:32Z
dc.date.available2026-07-07T10:24:32Z
dc.descriptionWe find exact cosmological solutions when the Newton parameter and the cosmological term are dynamically evolving in a renormalization-group improved Hamiltonian approach. In our derivation we use the Noether symmetry approach, leading to an interesting variable transformation which yields exact and general integration of the cosmological equations. The functional dependence of Lambda on G is determined by the method itself, therefore generalizing previous results on symmetry principles in cosmology. We find new functional relations between Lambda and G, jointly with power-law inflation for pure gravity.
dc.description18 pages, 2 figures. In the final version, physical interpretation and presentation have been improved in all sections
dc.identifierhttps://arxiv.org/abs/gr-qc/0610012
dc.identifierhttp://arxiv.org/abs/gr-qc/0610012
dc.identifierClass.Quant.Grav.24:1443-1455,2007
dc.identifierdoi:10.1088/0264-9381/24/6/005
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176223
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleNoether symmetry approach in pure gravity with variable G and Lambda
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