论文标题
无质量引力散射的经典极限的普遍性
Universality in the classical limit of massless gravitational scattering
论文作者
论文摘要
我们通过研究完整的两环四环散射幅度在纯爱因斯坦重力以及n> = 4超级勇气中的全含量高度四环散射幅度的高能量极限，从而证明了无质量颗粒的重力经典挠度角（g^3）的普遍性。作为副产品，我们的第一原理计算直接确认了Amati，Ciafaloni和Veneziano提出的爱因斯坦重力中的无质量挠度角，并且与最近提出的替代方案不一致。
We demonstrate the universality of the gravitational classical deflection angle of massless particles through O(G^3) by studying the high-energy limit of full two-loop four-graviton scattering amplitudes in pure Einstein gravity as well as N >= 4 supergravity. As a by-product, our first-principles calculation provides a direct confirmation of the massless deflection angle in Einstein gravity proposed long ago by Amati, Ciafaloni and Veneziano, and is inconsistent with a recently proposed alternative.
