论文标题
两个黑洞的强场散射：数值相对论遇到了孟沃斯基的重力
Strong-field scattering of two black holes: Numerical Relativity meets Post-Minkowskian gravity
论文作者
论文摘要
我们比较了基于辛科夫斯基（PM）结果的各种分析预测，比较了相等质量的非旋转二进制黑洞的散射数值相对性（NR）数据。尽管PM扩展的散射角的通常序列显示出对NR数据的收敛较差，但我们发现，根据有效的一体径向电势对PM信息进行重新制定会导致与NR数据的显着一致，尤其是在使用辐射反应的4pm信息时。使用Firsov的反转公式，我们首次直接从NR模拟A（辐射反应的）引力电势中提取，描述了相等质量的非旋转二进制黑孔的散射。我们敦促NR社区计算更多的散射模拟序列，以将这些知识扩展到更广泛的参数空间区域。
We compare numerical relativity (NR) data on the scattering of equal-mass, non-spinning binary black holes to various analytical predictions based on post-Minkowskian (PM) results. While the usual sequence of PM-expanded scattering angles shows a rather poor convergence towards NR data, we find that a reformulation of PM information in terms of Effective-One-Body radial potentials leads to remarkable agreement with NR data, especially when using the radiation-reacted 4PM information. Using Firsov's inversion formula we directly extract, for the first time, from NR simulations a (radiation-reacted) gravitational potential describing the scattering of equal-mass, non-spinning binary black holes. We urge the NR community to compute more sequences of scattering simulations, so as to extend this knowledge to a wider region of parameter space.
