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arXiv 0905.1899hep-thhep-ph
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Gribov-Zwanziger理论的幂零“BRST“对称性

The nilpotent "BRST" symmetry for the Gribov-Zwanziger theory

Kei-Ichi Kondo

摘要:

我们发现了杨-米尔斯理论在Gribov区域内的一个幂零量子对称性。事实上,我们给出了一组变换的字段一个香格里拉BRST离开Gribov-Zwanziger作用不变,服从幂零性,虽然通常的BRST对称性被打破,由于非零Gribov参数表示的存在下,Gribov地平线的配置空间的杨米尔斯场。我们表明,视界条件(间隙方程确定的Gribov参数)从修改后的BRST不变性的真空。

英文摘要:

We have found a nilpotent quantum symmetry of Yang-Mills theory restricted to the Gribov region. In fact, we give a set of transformations for the filds a la BRST that leaves the Gribov-Zwanziger action invariant and obeys the nilpotency, although the usual BRST symmetry is broken due to the non-vanishing Gribov parameter representing the presence of the Gribov horizon in the configuration space of the Yang-Mills field. We show that the horizon condition (the gap equation determining the Gribov parameter) follows from the modified BRST invariance of the vacuum.

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