Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8201673 | Annals of Physics | 2016 | 16 Pages |
Abstract
In the context of massless quantum electrodynamics (QED) with a linear covariant gauge fixing, the connection between the counterterm and the Hopf-algebraic approach to renormalization is examined. The coproduct formula of Green's functions contains two invariant charges, which give rise to different renormalization group functions. All formulas are tested by explicit computations to third loop order. The possibility of a finite electron self-energy by fixing a generalized linear covariant gauge is discussed. An analysis of subdivergences leads to the conclusion that such a gauge only exists in quenched QED.
Related Topics
Physical Sciences and Engineering
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Authors
Henry KiÃler,