高能极限下的两部分子散射：攀登两个和三个Reggeon阶梯
Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders
摘要：
本文综述了高能极限下散射振幅计算的最新进展。我们首先说明的冲击波形式主义，它允许一个计算振幅的快速演化方程的迭代解。然后，我们专注于我们最近的结果，关于$2\to 2$部分子散射。我们提出了计算的幅度的虚部，在下一个领先的对数精度在高能量的卷积，正式的所有订单，并在实践中13个循环。然后，我们讨论了在下一个到下一个到领先的对数精度和通过四个循环的幅度的实部的计算。这两种计算都是以全彩色进行的，并为散射振幅的分析结构及其红外奇异性结构提供了新的见解。
英文摘要：
We review recent progress on the calculation of scattering amplitudes in the high-energy limit. We start by illustrating the shockwave formalism, which allows one to calculate amplitudes as iterated solutions of rapidity evolution equations. We then focus on our recent results regarding $2\to 2$ parton scattering. We present the calculation of the imaginary part of the amplitude, at next-to-leading logarithmic accuracy in the high-energy logarithms, formally to all orders, and in practice to 13 loops. We then discuss the computation of the real part of the amplitude at next-to-next-to-leading logarithmic accuracy and through four loops. Both computations are carried in full colour, and provide new insight into the analytic structure of scattering amplitudes and their infrared singularity structure.
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