arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1608.01800hep-ph
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循环树对偶的应用

Applications of the loop-tree duality

German Rodrigo, Felix Driencourt-Mangin, German F. R. Sborlini, Roger Jose Hernandez-Pinto

摘要:

我们描述了一种新的方法来执行非线性光学计算,结合实和虚拟振幅在被积函数的水平,与一个完全本地补偿它们之间的IR,和虚拟的被积函数和适当定义的计数器之间的条款在UV,在这样一种方式,物理观测值可以计算在4维。该方法的优点之一是,所有的散射振幅的积分同时进行,而不需要张量减少,或投影到主积分集。因此,它可以在NLO计算的自动化方面提供很大的进步,其中实际的瓶颈是多分支过程的分析计算的复杂性和结果的数值稳定性。

英文摘要:

We describe a new method to perform NLO calculations, combining real and virtual amplitudes at the integrand level, with a fully local compensation between them in the IR, and between the virtual integrand and properly defined counter-terms in the UV, in such a way that physical observables can be computed in 4 dimensions. One of the advantages of the method is that all the scattering amplitudes are integrated simultaneously, without the need for tensor reduction, or projection onto sets of master integrals. As such, it could offer great progress in the automation of NLO calculations, where the actual bottle-necks are the complexity of the analytical calculations for multi-leg processes, and the numerical stability of the result.

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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