The self-force expansion allows the study of deviations from geodesic motion due to the
emission of radiation and its consequent back-reaction. We investigate this scheme within …

Just like light, gravitational waves (GWs) are deflected and magnified by gravitational fields
as they propagate through the Universe. However, their low frequency, phase coherence …

The propagation of electromagnetic waves in vacuum is often described within the
geometrical optics approximation, which predicts that wave rays follow null geodesics …

We study lensing of gravitational waves by a black hole in the deep wave optics regime, ie,
when the wavelength is much larger than the black hole Schwarzschild radius. We apply it to …

In General Relativity, the propagation of electromagnetic waves is usually described by the
vacuum Maxwell's equations on a fixed curved background. In the limit of infinitely high …

The propagation of high-frequency gravitational waves can be analyzed using the
geometrical optics approximation. In the case of large but finite frequencies, the geometrical …

The spin Hall effects of light represent a diverse class of polarization-dependent physical
phenomena involving the dynamics of electromagnetic wave packets. In a medium with an …

Standard sirens have been proposed as probes of alternative theories of gravity, such as
Horndeski models. Hitherto, all studies have been conducted on a homogeneous-isotropic …

In dark-energy models where a scalar field is nonminimally coupled to the spacetime
geometry, gravitational waves are expected to be supplemented with a scalar mode. Such …

The detection of gravitational waves (GWs) propagating through cosmic structures can
provide invaluable information on the geometry and content of our Universe as well as on …