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arXiv 0710.5589hep-th
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关于Leigh-Strassler变形N=4 SYM理论微扰性质的注记

A note on perturbative aspects of Leigh-Strassler deformed N=4 SYM theory

Kallingalthodi Madhu, Suresh Govindarajan

摘要:

我们对Leigh-Strassler形变N=4 SYM理论进行微扰研究,以验证三面体Delta(27)对称性在量子理论中成立.通过对超势的显式计算,我们证明了Delta(27)对称性在有限N下保持为两个环。微扰超势在有限贡献耦合中不是全纯的。然而,存在恢复全纯性的耦合常数重定义。有趣的是,如果在一个单圈反常维度消失的理论中要求三圈反常维度消失,同样的重新定义也会出现(在杰克、琼斯和诺斯的工作中[hep-ph/9603386])。然而,这两个字段的重新定义似乎相差两倍。

英文摘要:

We carry out a perturbative study of the Leigh-Strassler deformed N=4 SYM theory in order to verify that the trihedral Delta(27) symmetry holds in the quantum theory. We show that the Delta(27) symmetry is preserved to two loops (at finite N) by explicitly computing the superpotential. The perturbative superpotential is not holomorphic in the couplings due to finite contributions. However, there exist coupling constant redefinitions that restore holomorphy. Interestingly, the same redefinitions appear (in the work of Jack, Jones and North[hep-ph/9603386]) if one requires the three-loop anomalous dimension to vanish in a theory where the one-loop anomalous dimension vanishes. However, the two field redefinitions seem to differ by a factor of two.

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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