Machine learning Post-Minkowskian integrals
Abstract
We study a neural network framework for the numerical evaluation of Feynman loop integrals that are fundamental building blocks for perturbative computations of physical observables in gauge and gravity theories. We show that such a machine learning approach improves the convergence of the Monte Carlo algorithm for high-precision evaluation of multi-dimensional integrals compared to traditional algorithms. In particular, we use a neural network to improve the importance sampling. For a set of representative integrals appearing in the computation of the conservative dynamics for a compact binary system in General Relativity, we perform a quantitative comparison between the Monte Carlo integrators VEGAS and i-flow, an integrator based on neural network sampling.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- July 2023
- DOI:
- 10.1007/JHEP07(2023)181
- arXiv:
- arXiv:2209.01091
- Bibcode:
- 2023JHEP...07..181J
- Keywords:
-
- Scattering Amplitudes;
- Classical Theories of Gravity;
- Effective Field Theories;
- High Energy Physics - Theory;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Phenomenology
- E-Print:
- 26 pages + references, 4 figures, 3 tables, added ancillary, journal version