Differential Renormalization of the Wess-Zumino Model

Details Differential Renormalization of the Wess-Zumino Model Differential Renormalization of the Wess-Zumino Model

1991-11-07

arxiv.org/abs/hep-th/9111015v1

Mod.Phys.Lett. A7 (1992) 893-902

Physics

High Energy Physics

High Energy Physics - Theory

10 pages

Scientific paper

10.1142/S0217732392003530

We apply the recently developed method of differential renormalization to the Wess-Zumino model. From the explicit calculation of a finite, renormalized effective action, the $\beta$-function is computed to three loops and is found to agree with previous existing results. As a further, nontrivial check of the method, the Callan-Symanzik equations are also verified to that loop order. Finally, we argue that differential renormalization presents advantages over other superspace renormalization methods, in that it avoids both the ambiguities inherent to supersymmetric regularization by dimensional reduction (SRDR), and the complications of virtually all other supersymmetric regulators.

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