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arXiv 0704.3891hep-th
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AdS_5 × S^5中两圈处的世界面散射

World-sheet scattering in AdS_5 x S^5 at two loops

T. Klose, T. McLoughlin, J. A. Minahan, K. Zarembo

摘要:

我们研究了在微扰理论中截断到近平空间极限的AdS_5 × S^5 σ模型。除了将以前已知的单圈结果推广到全SU(2| 2)^2 S-矩阵我们计算了色散关系的双圈修正,然后计算了完整的双圈S-矩阵。微扰计算的结果可以与完全理论的适当限制的约束S-矩阵进行比较,并发现完全一致。

英文摘要:

We study the AdS_5 x S^5 sigma-model truncated to the near-flat-space limit to two-loops in perturbation theory. In addition to extending previously known one-loop results to the full SU(2|2)^2 S-matrix we calculate the two-loop correction to the dispersion relation and then compute the complete two-loop S-matrix. The result of the perturbative calculation can be compared with the appropriate limit of the conjectured S-matrix for the full theory and complete agreement is found.

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