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arXiv 0704.3586hep-thhep-ph
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敷料和包装

Dressing and Wrapping

A. V. Kotikov, L. N. Lipatov, A. Rej, M. Staudacher, V. N. Velizhanin

摘要:

我们证明了最近提出的着装,渐近Bethe anastomosis的平面AdS/CFT系统的有效性确实是有限的,在弱耦合的运营商包装效果。这是通过比较Bethe的四圈反常维数的有限自旋扭转2运营商的BFKL约束的高能散射振幅在N=4规范理论的预测。我们发现不一致,这意味着,在四个循环顺序的长度为2的运营商的分析故障。我们的方法提供了精确的工具,多个全循环测试的准确性,任何尚未被构造的一组精确的谱方程。最后,我们提出了一个猜想的确切的四圈反常维数的家庭twist-two运营商,其中包括Konishi字段。

英文摘要:

We prove that the validity of the recently proposed dressed, asymptotic Bethe ansatz for the planar AdS/CFT system is indeed limited at weak coupling by operator wrapping effects. This is done by comparing the Bethe ansatz predictions for the four-loop anomalous dimension of finite-spin twist-two operators to BFKL constraints from high-energy scattering amplitudes in N=4 gauge theory. We find disagreement, which means that the ansatz breaks down for length-two operators at four-loop order. Our method supplies precision tools for multiple all-loop tests of the veracity of any yet-to-be constructed set of exact spectral equations. Finally we present a conjecture for the exact four-loop anomalous dimension of the family of twist-two operators, which includes the Konishi field.

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