57 citations · 245 across the 17 of their papers we have counts for
21 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…
Black hole evaporation in a spherically symmetric non-commutative space-time
Elisabetta Di Grezia, Giampiero Esposito, Gennaro Miele
Recent work in the literature has studied the quantum-mechanical decay of a Schwarzschild-like black hole, formed by gravitational collapse, into almost-flat space-time and weak ra…
On the Riemann Function and Irregular Singular Points for Axisymmetric Black Hole Collisions at the Speed of Light
Giampiero Esposito, Cosimo Stornaiolo
The news function providing some relevant information about angular distribution of gravitational radiation in axisymmetric black hole collisions at the speed of light had been eva…
The Role of Elliptic Operators in the Initial-Value Problem for General Relativity
Giampiero Esposito, Cosimo Stornaiolo
The Arnowitt-Deser-Misner (ADM) equations are deeply intertwined with discrete spectral resolutions of an elliptic operator of Laplace type associated with the spacelike hypersurfa…
On the ADM Equations for General Relativity
Giampiero Esposito, Cosimo Stornaiolo
The Arnowitt-Deser-Misner (ADM) evolution equations for the induced metric and the extrinsic-curvature tensor of the spacelike surfaces which foliate the space-time manifold in can…