Scalar QED as a toy model for higher-order effects in classical gravitational scattering

Zvi Bern, Juan Pablo Gatica, Enrico Herrmann, Andres Luna*, Mao Zeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Quantum Electrodynamics (QED) serves as a useful toy model for classical observables in gravitational two-body systems with reduced complexity due to the linearity of QED. We investigate scattering observables in scalar QED at the sixth order in the charges (two-loop order) in a classical regime analogous to the post-Minkowskian expansion in General Relativity. We employ modern scattering amplitude tools and extract classical observables by both eikonal methods and the formalism of Kosower, Maybee, and O'Connell (KMOC). In addition, we provide a simplified approach to extracting the radial action beyond the conservative sector.
Original languageEnglish
Article number131
Pages (from-to)1-45
Number of pages45
JournalJournal of High Energy Physics
Volume2022
Issue number8
DOIs
Publication statusPublished - 10 Aug 2022

Keywords

  • hep-th
  • gr-qc

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