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Hepp’s bound for Feynman graphs and matroids

Erik Panzer

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Source: Crossref

Published: Dec 29, 2022

DOI: 10.4171/aihpd/126

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Source abstract

We study a rational matroid invariant, obtained as the tropicalization of the Feynman period integral. It equals the volume of the polar of the matroid polytope and we give efficient formulas for its computation. This invariant is proven to respect all known identities of Feynman integrals for graphs. We observe a strong correlation between the tropical and transcendental integrals, which yields a method to approximate unknown Feynman periods.

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Hepp’s bound for Feynman graphs and matroids — Mathematical Frontier Network