Quantum Perturbiner Method

Abstract: We construct the off-shell recursion relation for arbitrary loop-level scattering amplitudes beyond the tree-level Berends-Giele recursion relation for any quantum field theory. We define the quantum perturbiner expansion from the quantum effective action formalism, including the perturbative quantum corrections. Instead of the classical EoM in the conventional perturbiner method, we exploit the Dyson-Schwinger equation to derive the recursion relation for arbitrary order of loop-level scattering amplitudes. Furthermore, we extend this technique to compute the loop-level correlation functions.

HEP - theory

Audience: researchers in the topic

Advances in Theoretical Physics 2022

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