论文标题

前面的异常尺寸,$ n_f $限制

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

论文作者

Van Thurenhout, S., Moch, S.

论文摘要

我们回顾了大量夸克风味$ n_f $的限制的非前方异常尺寸的计算。该方法基于一致性关系,异常的维度必须遵守,这是操作员在手性极限下的重新归一化结构的直接结果。此外,我们提出了一种为强耦合$α_s$中所有订单生成异常维度的方法。这是基于Wilson-Fisher临界点上的确切的共形对称性,并为前向异常维度提供了以前对此类计算的扩展。

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.

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