Infrared regularization of non-Abelian gauge theories

Details Infrared regularization of non-Abelian gauge theories Infrared regularization of non-Abelian gauge theories

1995-09-14

arxiv.org/abs/hep-th/9509084v4

Physics

High Energy Physics

High Energy Physics - Theory

Plain TeX, 6 pages. Comment added to emphasize that the screening equation is in terms of bare parameters

Scientific paper

Curci and Ferrari found a unique BRS-invariant action for non-Abelian gauge theories which includes a mass term for the gauge bosons. I analyze this action. While the BRS operator is not nilpotent, the Zinn-Justin equation generalizes in a simple way so that the renormalization of the theory is consistent with the infrared regularization provided by the mass---infrared singularities and ultraviolet infinities are therefore clearly separated. Relations between renormalization constants are derived in dimensional regularization with minimal subtraction. Additional new symmetries allow a simple characterization of physical operators. A new formula is given for the gauge parameter dependence of physical operators.

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