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arXiv 1006.3306hep-th
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强耦合下散射振幅的简单共线极限

A simple collinear limit of scattering amplitudes at strong coupling

Gang Yang

摘要:

共线极限通常为散射振幅提供强约束。在强耦合时,N=4 SYM振幅的共线极限与相应Y系统的大质量极限有关。在本文中,我们考虑了一个特殊的情况下,所有的质量参数被认为是大的,这对应于一个多重共线极限,其中一个n边形成为五边形。这个极限为振幅提供了一个有用的约束,特别是可以用来固定4K胶子的周期部分,这是完整振幅的最后一个缺失部分。

英文摘要:

Collinear limit usually provides strong constraints for scattering amplitudes. At strong coupling, collinear limit of the amplitudes in N=4 SYM is related to the large mass limit of the corresponding Y system. In this paper, we consider a special case in which all mass parameters are taken to be large, which corresponds to a multi-double-collinear limit in which a n-side polygon becomes pentagons. This limit provides a useful constraint for amplitudes, in particular, can be used to fix the periods part for the case of 4K gluons, which is the last missing piece of full amplitudes.

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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