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gr-qc2007★ 4 cited
Noether symmetry approach to scalar-field-dominated cosmology with dynamically evolving G and Lambda
Alfio Bonanno, Giampiero Esposito, Claudio Rubano +1
This paper studies the cosmological equations for a scalar field Phi in the framework of a quantum gravity modified Einstein--Hilbert Lagrangian where G and Lambda are dynamical va…
gr-qc2006★ 28 cited
Noether symmetry approach in pure gravity with variable G and Lambda
Alfio Bonanno, Giampiero Esposito, Claudio Rubano +1
We find exact cosmological solutions when the Newton parameter and the cosmological term are dynamically evolving in a renormalization-group improved Hamiltonian approach. In our d…