Differential renormalization of gauge theories
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Jagiellonian University
Date
1998Referencia bibliográfica
Águila, F.; Pérez-Victoria, M. Differential renormalization of gauge theories. Acta Physica Polonica B, 29(10): 2857-2863 (1998). []
Sponsorship
This work has been supported by CICYT, under contract number AEN96-1672, and by Junta de Andalucía, FQM101. M.P.V. thanks Ministerio de Educación y Cultura for financial support.Abstract
The scope of constrained differential renormalization is to provide renormalized expressions for Feynman graphs, preserving at the same time the Ward identities of the theory. It has been shown recently that this can be done consistently at least to one loop for abelian and non-abelian gauge theories. We briefly review these results, evaluate as an example the gluon selfenergy in both coordinate and momentum space, and comment on anomalies.