Some non-renormalization theorems in Curci-Ferrari model

Details Some non-renormalization theorems in Curci-Ferrari model Some non-renormalization theorems in Curci-Ferrari model

2007-01-13

arxiv.org/abs/hep-th/0701127v4

Int.J.Mod.Phys.A23:2961-2973,2008

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, some references added, some improvement in explanations and some misprints corrected

Scientific paper

10.1142/S0217751X08040469

In the present letter, a particular form of Slavnov-Taylor identities for the Curci-Ferrari model is deduced. This model consist of Yang-Mills theory in a particular non-linear covariant gauge, supplemented with mass terms for gluons and ghosts. It can be used as a regularization for the Yang-Mills theory preserving simple Slavnov-Taylor identities. Employing these identities two non-renormalization theorems are proved that reduce the number of independent renormalization factors from five to three. These new relations are verified by comparing to the already known three-loops renormalization factors. These relations include, as a particular case, the corresponding known identities in Yang-Mills theory in Landau gauge.

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