论文标题
从散射振幅中的所有顺序引力波形
All order gravitational waveforms from scattering amplitudes
论文作者
论文摘要
波形是与任何辐射物理过程相关的经典可观察物。使用散射幅度，通常以弱场状态计算出在牛顿后或麦诺科夫斯基后近似中的某些有限顺序。在这里，我们使用强场幅度来计算重力平面波散射的波形，被视为真空爱因斯坦方程的精确非线性溶液。值得注意的是，波形包含无限数量后的肉后贡献以及尾部效应。我们还提供了电磁作用中的类似结果和对比。
Waveforms are classical observables associated with any radiative physical process. Using scattering amplitudes, these are usually computed in a weak-field regime to some finite order in the post-Newtonian or post-Minkowskian approximation. Here, we use strong field amplitudes to compute the waveform produced in scattering of massive particles on gravitational plane waves, treated as exact nonlinear solutions of the vacuum Einstein equations. Notably, the waveform contains an infinite number of post-Minkowskian contributions, as well as tail effects. We also provide, and contrast with, analogous results in electromagnetism.
