Radiative contribution to classical gravitational scattering at the third order in $G$
Abstract
Working within the post-Minkowskian approach to General Relativity, we prove that the radiation-reaction to the emission of gravitational waves during the large-impact-parameter scattering of two (classical) point masses modifies the conservative scattering angle by an additional contribution of order which involves a high-energy (or massless) logarithmic divergence of opposite sign to the one contained in the third-post-Minkowskian result of Bern et al. [Phys. Rev. Lett. {\bf 122}, 201603 (2019)]. The high-energy limit of the resulting radiation-reaction-corrected (classical) scattering angle is finite, and is found to agree with the one following from the (quantum) eikonal-phase result of Amati, Ciafaloni and Veneziano [ Nucl. Phys. B {\bf 347}, 550 (1990)].
Cite
@article{arxiv.2010.01641,
title = {Radiative contribution to classical gravitational scattering at the third order in $G$},
author = {Thibault Damour},
journal= {arXiv preprint arXiv:2010.01641},
year = {2020}
}
Comments
10 pages, no figures