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math-ph2017
Contraction of Dirac matrices via chord diagrams
Marcel Golz
Chord diagrams and combinatorics of word algebras are used to model products of Dirac matrices, their traces, and contractions. A simple formula for the result of arbitrary contrac…
math-ph2017★ 5 cited
New graph polynomials in parametric QED Feynman integrals
Marcel Golz
In recent years enormous progress has been made in perturbative quantum field theory by applying methods of algebraic geometry to parametric Feynman integrals for scalar theories.…