On twist-two operators in N=4 SYM

被引:11
|
作者
Henn, J [1 ]
Jarczak, C [1 ]
Sokatchev, E [1 ]
机构
[1] LAPTH, F-74941 Annecy Le Vieux, France
关键词
D O I
10.1016/j.nuclphysb.2005.09.043
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We propose a mechanism for calculating anomalous dimensions of higher-spin twist-two operators in N = 4 SYM. We consider the ratio of the two-point functions of the operators and of their superconformal descendants or, alternatively, of the three-point functions of the operators and of the descendants with two protected half-BPS operators. These ratios are proportional to the anomalous dimension and can be evaluated at n - 1 loop in order to determine the anomalous dimension at n loops. We illustrate the method by reproducing the well-known one-loop result by doing only tree-level calculations. We work out the complete form of the first-generation descendants of the twist-two operators and the scalar sector of the second-generation descendants. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:191 / 209
页数:19
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