Gravitational scattering at the seventh order in $G$: nonlocal contribution at the sixth post-Newtonian accuracy

Abstract

A recently introduced approach to the classical gravitational dynamics of binary systems involves intricate integrals (linked to a combination of nonlocal-in-time interactions with iterated $\frac{1}{r}$-potential scattering) which have so far resisted attempts at their analytical evaluation. By using computing techniques developed for the evaluation of multi-loop Feynman integrals (notably Harmonic Polylogarithms and Mellin transform) we show how to analytically compute all the integrals entering the nonlocal-in-time contribution to the classical scattering angle at the sixth post-Newtonian accuracy, and at the seventh order in Newton's constant, $G$ (corresponding to six-loop graphs in the diagrammatic representation of the classical scattering angle).

This paper is a significantly extended version of our previous, separate arxiv submission "Gravitational dynamics at O(G^6): perturbative gravitational scattering meets experimental mathematics" e-Print: 2008.09389 [gr-qc]. The most significant extension is that we now present results at the 7th order in G. 24 pages; revtex macros used; 1 ancillary file

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