论文标题
旋转颗粒和Kerr黑洞的NLO偏转
NLO deflections for spinning particles and Kerr black holes
论文作者
论文摘要
我们采用[1]的“ KMOC”形式主义来计算以任意旋转方向到近代领导顺序的旋转体的经典动量偏转（一个循环）。我们在电动力学和重力中这样做。对于通用质量有效的最终结果，对于在树水平上的所有自旋而言都是正确的，并且在一个循环下为电磁（重力）外壳的第二（第四）旋转顺序都是正确的。此外，重点是探针极限方案，即使在近代领先顺序下，我们的结果也扩展到了重源的所有旋转顺序。我们使用基于单位性的框架和Feynman Mingrammatic方法进行计算，该方法依赖于在固定背景下计算的散射幅度。
We employ the "KMOC" formalism of [1] to compute classical momentum deflections of spinning bodies with arbitrary spin orientations up to next-to-leading order (one loop). We do this in electrodynamics and gravity. The final result, valid for generic masses, is true for all spins at tree level and up to second (fourth) spin order for the electromagnetic (gravity) case at one loop. Furthermore, emphasis is given to the probe limit scenario where our results extend to all spin orders in the heavy source, even at next-to-leading order. We carry out our computations both using a unitarity based framework and Feynman diagrammatic approach which relies on scattering amplitudes computed on fixed backgrounds.
