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Hepp's bound for Feynman graphs and matroids

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arxiv 1908.09820 v3 pith:EMZADUF4 submitted 2019-08-26 math-ph hep-thmath.COmath.MP

Hepp's bound for Feynman graphs and matroids

classification math-ph hep-thmath.COmath.MP
keywords feynmangraphsintegralsinvariantmatroidapproximateboundcomputation
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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Cited by 3 Pith papers

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