A tale of tails through generalized unitarity
A tale of tails through generalized unitarity
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DOI：
10.1016/j.physletb.2022.137634
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发表时间：
2022-02
影响因子：
4.4
通讯作者：
Alex Edison;M. Levi
中科院分区：
文献类型：
--
作者：
Alex Edison;M. Levi
我们引入了一种新颖的框架来研究双星体发射的引力辐射的散射对双星体的高阶引力效应。在这里，我们重点关注双星引力势背景引起的辐射反应，即所谓的尾部效应，作为此类散射效应的起点。我们从二元复合粒子的有效场论开始。通过多环和广义幺正性方法，我们得出了由于这些效应而产生的动力学多极子、能谱和可观测通量的因果有效作用。我们继续研究第三个子主导的辐射反应效应，在后牛顿引力的四环水平和七阶上，为高阶效应提供了新的线索，并推动了最先进的技术发展。
We introduce a novel framework to study high-order gravitational effects on a binary from the scattering of its emitted gravitational radiation. Here we focus on the radiation-reaction due to the background of the binary's gravitational potential, namely on the so-called tail effects, as the starting point to this type of scattering effects. We start from the effective field theory of a binary composite-particle. Through multi-loop and generalized-unitarity methods, we derive the causal effective actions of the dynamical multipoles, the energy spectra, and the observable flux, due to these effects. We proceed through the third subleading such radiation-reaction effect, at the four-loop level and seventh order in post-Newtonian gravity, shedding new light on the higher-order effects, and pushing the state of the art.