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arXiv 2206.04517hep-ph
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超前- $n_f$极限中的离前反常维数

Off-forward anomalous dimensions in the leading-$n_f$ limit

S. Van Thurenhout, S. Moch

摘要:

本文综述了在夸克味数多的极限下离前反常维数的计算方法$n_f$。该方法基于异常维度必须遵守的一致性关系,这是手征极限中算子重整化结构的直接结果。此外,我们还提出了一种在强耦合$α_s$中产生所有阶反常维数的方法。这是基于在威尔逊-费舍尔临界点的精确共形对称性,并提供了这种类型的前向反常尺寸的先前计算的扩展。

英文摘要:

We review the computation of off-forward anomalous dimensions in the limit of a large number of quark flavors $n_f$. The method is based on a consistency relation the anomalous dimensions have to obey, which is a direct consequence of the renormalization structure of the operators in the chiral limit. In addition, we present a way to generate the anomalous dimensions to all orders in the strong coupling $α_s$. This is based on exact conformal symmetry at the Wilson-Fisher critical point and provides an extension of previous calculations of this type for the forward anomalous dimensions.

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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