Feynman integrals for binary systems of black holes
High Energy Physics - Theory
2021-11-01 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
The initial phase of the inspiral process of a binary black-hole system can be described by perturbation theory. At the third post-Minkowskian order a two-loop double box graph, known as H-graph, contributes. In this talk we report how all master integrals of the H-graph with equal masses can be expressed up to weight four in terms of multiple polylogarithms. We also discuss techniques for the unequal mass case. The essential complication (and the focus of the talk) is the occurrence of several square roots.
Cite
@article{arxiv.2110.15654,
title = {Feynman integrals for binary systems of black holes},
author = {Philipp Alexander Kreer and Robert Runkel and Stefan Weinzierl},
journal= {arXiv preprint arXiv:2110.15654},
year = {2021}
}
Comments
9 pages, contribution to the proceedings of the 15th International Symposium on Radiative Corrections (RADCOR) and the XIX Workshop on Radiative Corrections for the LHC and Future Colliders (LoopFest)