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arXiv 0801.2094hep-th
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排列和循环

Permutations and the Loop

T. W. Brown

摘要:

本文考虑有限N下\cN =4超对称Yang-Mills的U(2)扇区中多迹算子的单圈两点函数.利用U(N)和S_{n+1}群论数据,我们导出了它的一个表达式,其中n是算子的长度.在0711.0176中构造的Clebsch-Gordan算子在树级上是对角的,如果你可以通过向它们的U(N)表示的每个n盒杨图添加一个盒子来达到相同的(n+1)盒杨图,那么它只在一个循环处混合(这组织了它们的多迹结构)。类似的结果预计更高的循环和其他部门的全球对称群。

英文摘要:

We consider the one-loop two-point function for multi-trace operators in the U(2) sector of \cN=4 supersymmetric Yang-Mills at finite N. We derive an expression for it in terms of U(N) and S_{n+1} group theory data, where n is the length of the operators. The Clebsch-Gordan operators constructed in 0711.0176, which are diagonal at tree level, only mix at one loop if you can reach the same (n+1)-box Young diagram by adding a single box to each of the n-box Young diagrams of their U(N) representations (which organise their multi-trace structure). Similar results are expected for higher loops and for other sectors of the global symmetry group.

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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