299 citations · 845 across the 25 of their papers we have counts for
3 papers · 1 filter
The role of longitudinal polarizations in Horndeski and macroscopic gravity: Introducing gravitational plasmas
Fabio Moretti, Flavio Bombacigno, Giovanni Montani
We discuss some general and relevant features of longitudinal gravitational modes in Horndeski gravity and their interaction with matter media. Adopting a gauge-invariant formulati…
Big-Bounce in projectively invariant Nieh-Yan models: the Bianchi I case
Flavio Bombacigno, Simon Boudet, Gonzalo J. Olmo +1
We show that the Nieh-Yan topological invariant breaks projective symmetry and loses its topological character in presence of non vanishing nonmetricity. The notion of the Nieh-Yan…
Big-bounce and future time singularity resolution in Bianchi I: the projective invariant Nieh-Yan case
Flavio Bombacigno, Simon Boudet, Gonzalo J. Olmo +1
We extend the notion of the Nieh-Yan invariant to generic metric-affine geometries, where both torsion and nonmetricity are taken into account. Notably, we show that the properties…