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arXiv 1402.3060hep-thhep-latmath-phmath.MP
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Yang-Mills理论中Gribov副本消去的复合场方法

On Composite fields approach to Gribov copies elimination in Yang-Mills theories

Alexander A. Reshetnyak

摘要:

本文提出了一种利用复合场技术引入杨-米尔斯理论的Gribov-Zwanziger视界泛函$H$的方法:$σ(ϕ)=H$ .在规范$χ$和$χ^{\prime }$的相同的视界功能的不同形式考虑通过(规范)场相关的BRST变换连接量子杨-米尔斯行动在这些规范。引入复合场格林函数的生成泛函,导出相应的沃德恒等式.对规范依赖性的研究表明,在含有复合场$H$的杨-米尔斯理论中,有效作用量不依赖于由杨-米尔斯场$ϕ$单独确定的极值上的规范.

英文摘要:

We suggest a method of introducing the Gribov--Zwanziger horizon functional, $H$, for Yang--Mills theories by using the composite fields technique: $σ(ϕ)=H$. A different form of the same horizon functional in gauges $χ$ and $χ^{\prime }$ is taken into account via (gauged) field-dependent BRST transformations connecting quantum Yang--Mills actions in these gauges. We introduce generating functionals of Green's functions with composite fields and derive the corresponding Ward identities. A study of gauge dependence shows that the effective action in Yang--Mills theories with the composite field $H$ does not depend on the gauge on the extremals determined by the Yang--Mills fields $ϕ$ alone.

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