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arXiv 2111.00512hep-lat
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SYM中Gluino-Glue算子的微扰研究

Perturbative study of the Gluino-Glue operator in SYM

Marios Costa, George Panagopoulos, Haralambos Panagopoulos, Gregoris Spanoudes, Herodotos Herodotou, Phivos Philippides

摘要:

我们研究了格点微扰理论(LPT)和规范不变重整化方案(GIRS)的Gluino-Glue算子的重整化。后者涉及规范不变的格林函数的两个运营商在不同的时空点,这也可以通过数值模拟计算。不需要固定一个规范,与规范非不变算子的混合是无关紧要的。我们微扰地计算了GIRS与修正的最小减法格式之间的转换因子。另一方面,Gluino-Glue算符与几个具有相同量子数的规范非不变算符混合。确定格点上的混合矩阵需要用LPT计算具有外部胶子、胶子和鬼场的2-pt和3-pt格林函数。我们计算在一个循环顺序的重整化的Gluino-Glue运营商和所有运营商的混合系数。

英文摘要:

We investigate the renormalization of the Gluino-Glue operator, using both Lattice Perturbation Theory (LPT) and a Gauge Invariant Renormalization Scheme (GIRS). The latter scheme involves gauge-invariant Green's functions of two operators at different space-time points, which can be also computed via numerical simulations. There is no need to fix a gauge and the mixing with gauge noninvariant operators is inconsequential. We calculate perturbatively the conversion factor relating GIRS with the Modified Minimal Subtraction scheme. On the other hand, the Gluino-Glue operator being mixes with several gauge noninvariant operators which have the same quantum numbers. The determination of the mixing matrix on the lattice demands the calculation of 2-pt and 3-pt Green's functions with external gluon, gluino and ghost fields using LPT. We compute at one-loop order the renormalization of the Gluino-Glue operator and all operator mixing coefficients.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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