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Using the Hopf Algebra Structure of QFT in Calculations

D. Kreimer, R. Delbourgo

hep-tharXiv:hep-th/9903249

Abstract

We employ the recently discovered Hopf algebra structure underlying perturbative Quantum Field Theory to derive iterated integral representations for Feynman diagrams. We give two applications: to massless Yukawa theory and quantum electrodynamics in four dimensions.

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