research10.1140/epjc/s10052-008-0614-6

Implicit regularization beyond one loop order: gauge field theories

Abstract

We extend a constrained version of Implicit Regularization (CIR) beyond one loop order for gauge field theories. In this framework, the ultraviolet content of the model is displayed in terms of momentum loop integrals order by order in perturbation theory for any Feynman diagram, while the Ward-Slavnov-Taylor identities are controlled by finite surface terms. To illustrate, we apply CIR to massless abelian Gauge Field Theories (scalar and spinorial QED) to two loop order and calculate the two-loop beta-function of the spinorial QED.Comment: 18 pages, 5 figures, accepted for publication in European Physical Journa

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0801.2703oai:arXiv.org:0801.2703
Last time updated on April 13, 2012View original full text link

This paper was published in arXiv.org e-Print Archive.

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