3 papers
gr-qc2026
Beyond-eikonal diffraction integral in gravitational lensing
Emma Bruyère, Giulia Cusin, Cyril Pitrou
We revisit the derivation of the diffraction integral, which is an approximate evaluation of the Kirchhoff integral, widely used in the literature for phenomenological applications…
gr-qc2026
Gravitational lensing beyond the eikonal approximation
Emma Bruyère, Cyril Pitrou
Waves propagating through a gravitational potential exhibit wave-optics effects when their wavelength is not significantly smaller than the lensing scales. We study the propagation…
gr-qc2024
Tail effects of self-interacting scalar fields
Philippe Brax, Emma Bruyère
We consider the effects of quartic self-interactions on the dynamics of a binary system due to a (nearly) massless scalar field conformally coupled to matter. We investigate the de…