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hep-th2000
Noncommutative renormalization for massless QED
Christian Brouder, Alessandra Frabetti
We study the renormalization of massless QED from the point of view of the Hopf algebra discovered by D. Kreimer. For QED, we describe a Hopf algebra of renormalization which is ne…
nlin.PS2000
Nonlinear Perturbation Theory
Stephanie Rossano, Christian Brouder
An explicit perturbative solution to all orders is given for a general class of nonlinear differential equations. This solution is written as a sum indexed by rooted trees and uses…