4 papers
Gravitational Landau Damping for massive scalar modes
Fabio Moretti, Flavio Bombacigno, Giovanni Montani
We establish the possibility of Landau damping for gravitational scalar waves which propagate in a non-collisional gas of particles. In particular, under the hypothesis of homogene…
Scalar modes in extended hybrid metric-Palatini gravity: weak field phenomenology
Flavio Bombacigno, Fabio Moretti, Giovanni Montani
We investigate the nature of additional scalar degrees of freedom contained in extended hybrid metric-Palatini gravity, outlining the emergence of two coupled dynamical scalar mode…
Gauge invariant formulation of gravitational waves in metric gravity
Fabio Moretti, Flavio Bombacigno, Giovanni Montani
We analyze the gravitational waves propagation in metric theories of gravity. In particular, adopting a gauge invariant formalism we clearly determine the exact propagating…
Modified Gravitational Waves Across Galaxies from Macroscopic Gravity
Giovanni Montani, Fabio Moretti
We analyze the propagation of gravitational waves in a medium containing bounded subsystems ("molecules"), able to induce significant Macroscopic Gravity effects. We establish a pr…