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arXiv 0705.0303hep-th
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强耦合下胶子散射振幅

Gluon scattering amplitudes at strong coupling

Luis F. Alday, Juan Maldacena

摘要:

描述了如何利用规范弦对偶性计算N=4超杨米尔斯中强耦合平面胶子散射振幅。计算归结为找到一个特定的经典弦配置,其边界条件由胶子动量决定。结果是红外发散。我们引入引力维正则化的版本来定义有限量。领导和subleading IR发散的特点是由两个功能的耦合,我们计算在强耦合。我们还计算了四点振幅的完整有限形式,我们发现与最近的伯尔尼,狄克逊和Smirnov的anananterior协议。

英文摘要:

We describe how to compute planar gluon scattering amplitudes at strong coupling in N=4 super Yang Mills by using the gauge/string duality. The computation boils down to finding a certain classical string configuration whose boundary conditions are determined by the gluon momenta. The results are infrared divergent. We introduce the gravity version of dimensional regularization to define finite quantities. The leading and subleading IR divergencies are characterized by two functions of the coupling that we compute at strong coupling. We compute also the full finite form for the four point amplitude and we find agreement with a recent ansatz by Bern, Dixon and Smirnov.

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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