Classical and quantum double copy of back-reaction
Classical and quantum double copy of back-reaction
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DOI：
10.1007/jhep09(2020)200
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发表时间：
2020-05
影响因子：
5.4
通讯作者：
T. Adamo;A. Ilderton
中科院分区：
文献类型：
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作者：
T. Adamo;A. Ilderton
我们考虑色荷和大质量粒子穿过规范理论和引力中的强平面波背景所发射的辐射。这些背景被完全和非扰动地对待。我们从探测粒子发出的辐射计算这些场的反作用：经典地通过背景耦合世界线理论，并在量子理论中通过三点振幅的树水平。这两种方法的一致性是明确建立的。我们证明了在平面波背景下，规范理论和引力振幅是通过振幅的双重拷贝联系在一起的。最后，我们证明，在四维这些计算可以进行的背景打扮版本的大规模旋量螺旋形式主义。
We consider radiation emitted by colour-charged and massive particles crossing strong plane wave backgrounds in gauge theory and gravity. These backgrounds are treated exactly and non-perturbatively throughout. We compute the back-reaction on these fields from the radiation emitted by the probe particles: classically through background-coupled worldline theories, and at tree-level in the quantum theory through three-point amplitudes. Consistency of these two methods is established explicitly. We show that the gauge theory and gravity amplitudes are related by the double copy for amplitudes on plane wave backgrounds. Finally, we demonstrate that in four-dimensions these calculations can be carried out with a background-dressed version of the massive spinor-helicity formalism.