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arXiv · 1407.5150

What can we learn from Knizhnik--Zamolodchikov Equations?

Dirk Kreimer
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Abstract

We discuss structural similarities between Knizhnik--Zamolodchikov equations (in fact, their simplest version needed to introduce the Drinfeld associator) and Dyson--Schwinger equations. We emphasize that the latter allow for a filtration by co-radical degree using quasi-shuffle products and the lower central series filtration of the Lie algebra of Feynman graphs. This clarifies how they are a generalization of the KZ equations. This is a starting point for a algebraic organization of the next-to...-to leading log expansion which has been worked out in collaboration with Olaf Krueger and which will be given elsewhere [1,2].

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Dirk Kreimer. 2014-07-19. What can we learn from Knizhnik--Zamolodchikov Equations?. https://arxiv.org/abs/1407.5150

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