Friday, February 8, 2013

1302.1692 (Dan-Radu Grigore)

Loop Anomalies in the Causal Approach    [PDF]

Dan-Radu Grigore
We consider gauge models in the causal approach and prove that the loop contributions to the chronological products do not produce anomalies, at least in the second and third order of the perturbation theory. The axial anomaly is null if we impose a stronger condition, namely that the chronological products are coboundaries, up to super-renormalizable terms.
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