The initial phase of the inspiral process of a binary system producing gravitational waves can be described by perturbation theory. At the third post-Minkowskian order a two-loop double box graph, known as H-graph contributes. We consider the case where the two objects making up the binary system have equal masses. We express all master integrals related to the equal-mass H-graph up to weight four in terms of multiple polylogarithms. We provide a numerical program which evaluates all master integrals up to weight four in the physical regions with arbitrary precision.
Physics Letters B
- Pub Date:
- August 2021
- High Energy Physics - Phenomenology;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- 19 pages, v2: version to be published