The calculation of 2-loop self-energy diagrams by the sector decomposition
Abstract
Detailed description of the calculation of the 2-loop self-energy for a scalar particle is presented. By employing a simple sector decomposition method, the ultraviolet divergent part is efficiently separated from the finite part. The resulting expression can be used for both analytic and numerical computation to renormalize the divergence and to provide finite results for physics.
Fields of Study & Subjects
Particle physics theoretical and experimental studies
Quantum Chromodynamics and Particle Interactions
Quantum and Classical Electrodynamics
Publication details
- Journal / source
- arXiv (Cornell University)
- Publication date
- 24 January 2026
- Document type
- Preprint