Multi-loop techniques for massless Feynman diagram calculations
classification
✦ hep-th
cond-mat.stat-mechhep-ph
keywords
diagramcalculationsmasslessfeynmanloopmulti-looptechniquesanalytical
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We review several multi-loop techniques for analytical massless Feynman diagram calculations in relativistic quantum field theories: integration by parts, the method of uniqueness, functional equations and the Gegenbauer polynomial technique. A brief, historically oriented, overview of some of the results obtained over the decades for the massless 2-loop propagator-type diagram is given. Concrete examples of up to $5$-loop diagram calculations are also provided.
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Cited by 1 Pith paper
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