47 citations · 201 across the 9 of their papers we have counts for
5 papers · 1 filter
On the stability of scale-invariant black holes
Simon Boudet, Massimiliano Rinaldi, Samuele Marco Silveravalle
Quadratic scale-invariant gravity non minimally coupled to a scalar field provides a competitive model for inflation, characterized by the transition from an unstable to a stable f…
Landau damping for gravitational waves in parity-violating theories
Flavio Bombacigno, Fabio Moretti, Simon Boudet +1
We discuss how tensor polarizations of gravitational waves can suffer Landau damping in the presence of velocity birefringence, when parity symmetry is explicitly broken. In partic…
Torsional birefringence in metric-affine Chern-Simons gravity: gravitational waves in late-time cosmology
S. Boudet, F. Bombacigno, F. Moretti +1
In the context of the metric-affine Chern-Simons gravity endowed with projective invariance, we derive analytical solutions for torsion and nonmetricity in the homogeneous and isot…
Quasinormal modes of Schwarzschild black holes in projective invariant Chern-Simons modified gravity
Simon Boudet, Flavio Bombacigno, Gonzalo J. Olmo +1
We generalize the Chern-Simons modified gravity to the metric-affine case and impose projective invariance by supplementing the Pontryagin density with homothetic curvature terms w…
The Immirzi field in modified gravity: superentropic black holes with scalar hair
Simon Boudet
In the context of f(R) generalizations to the Holst action, endowed with a dynamical Immirzi field, we derive an analytic solution describing asymptotically anti-de Sitter black ho…