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arXiv 1111.1547hep-thhep-ph
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Amplitude的根

Roots of Amplitudes

Bo Feng, Yin Jia, Hui Luo, Mingxing Luo

摘要:

在最近的一篇论文[arXiv:1106.0166]中,BCFW递归关系中的边界贡献与振幅的根有关。本文就此问题作了几点分析。首先,我们使用不同的方法重新推导[arXiv:1106.0166]中给出的边界BCFW递归关系。其次,我们将因子分解极限推广到z依赖的极限,其中根的信息更加透明。然后,我们用几个例子来证明我们的分析。一般来说,因式分解极限的关系不能保证找到根的显式表达式。

英文摘要:

In a recent paper [arXiv:1106.0166], boundary contributions in BCFW recursion relations have been related to roots of amplitudes. In this paper, we make several analyses regarding to this problem. Firstly, we use different ways to re-derive boundary BCFW recursion relations given in [arXiv:1106.0166]. Secondly, we generalize factorization limits to z-dependent ones, where information of roots is more transparent. Then, we demon- strate our analysis with several examples. In general, relations from factorization limits cannot guarantee to find explicit expressions for roots.

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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