Combinatorial proof of a non-renormalization theorem

Abstract We provide a direct combinatorial proof of a Feynman graph identity which implies a wide generalization of a formality theorem by Kontsevich. For a Feynman graph Γ, we associate to each vertex a position x v ∈ ℝ and to each edge e the combination s e = a e − 1 2 x e + − x e − $$ {s}_e={a}_e...

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Bibliographic Details
Main Authors: Paul-Hermann Balduf, Davide Gaiotto
Format: Article
Language:English
Published: SpringerOpen 2025-05-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP05(2025)120
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