Renormalization and gauge symmetry for 2PI effective actions
classification
✦ hep-ph
keywords
effectiverenormalizationsymmetryactionactionsapproximationsdiscussexplore
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We explore a method to recover symmetry identities in the 2PI formalism. It is based on non-perturbative approximations to the 1PI effective action. We discuss renormalization questions raised by this technique.
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