28 citations · 104 across the 8 of their papers we have counts for
4 papers · 1 filter
Spherically symmetric ADM gravity with variable G and Lambda(c)
Giampiero Esposito, Claudio Rubano, Paolo Scudellaro
This paper investigates the Arnowitt--Deser--Misner (hereafter ADM) form of spherically symmetric gravity with variable Newton parameter G and cosmological term Lambda(c). The Newt…
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…
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…
On boosted space-times with cosmological constant and their ultrarelativistic limit
Giampiero Esposito, Roberto Pettorino, Paolo Scudellaro
The problem of deriving a shock-wave geometry with cosmological constant by boosting a Schwarzschild-de Sitter (or anti-de Sitter) black hole is re-examined. Unlike previous work i…