4 papers
On more general Gibbons-Hawking-York boundary terms for f(R) gravity
Federico Scali, Sergio Luigi Cacciatori, Matteo Galaverni +1
More general boundary conditions are introduced - with respect to known literature - which produce a well-posed stationary action principle in gravity. These conditions enco…
Black Holes, Gravitational Waves and Space-Time Singularities Lemaitre Conference 2024
Massimo Bianchi, Sergio Luigi Cacciatori, Matteo Galaverni +2
This editorial introduces the topical collection arising from the Lemaitre Conference 2024 - the second in a series of meetings dedicated to the scientific legacy of Georges Lemait…
Spherically Symmetric Geometrodynamics in Jordan and Einstein frames
Matteo Galaverni, Gabriele Gionti
Spherically symmetric geometrodynamics is studied for scalar-tensor theory and Einstein General Relativity minimally coupled to a scalar field. We discussed the importance of bound…
On the canonical equivalence between Jordan and Einstein frames
Gabriele Gionti S. J., Matteo Galaverni
A longstanding issue is the classical equivalence between the Jordan and the Einstein frames, which is considered just a field redefinition of the metric tensor and the scalar fiel…