论文标题

在第六级牛顿级的重力测试二进制动力学

Testing binary dynamics in gravity at the sixth post-Newtonian level

论文作者

Blümlein, J., Maier, A., Marquard, P., Schäfer, G.

论文摘要

我们将重力中的二进制质量系统的运动直至第六阶段 - 纽顿秩序至$ g_n^3 $术语从头开始,使用基于谐波坐标中Feynman振幅的有效现场理论方法中的动量扩展。对于这些贡献,我们构建了对各向同性的规范转换,并以5pn的形式构建了EOB坐标,并同意文献中的结果\ cite {Bern:2019nnu,Damour:2019lcq}。在6点时,我们与\ cite {bern:2019nnu}给出的各向同性坐标中的哈密顿量相比,或者是由散射角度产生的。我们发现了从谐波坐标中的哈密顿量转变为\ cite {bern:2019nnu},但没有\ cite {damour:2019lcq}。这意味着我们也同意所有可观察到的东西,\ cite {bern:2019nnu}到第六帖子 - newtonian订单至$ g_n^3 $。

We calculate the motion of binary mass systems in gravity up to the sixth post--Newtonian order to the $G_N^3$ terms ab initio using momentum expansions within an effective field theory approach based on Feynman amplitudes in harmonic coordinates. For these contributions we construct a canonical transformation to isotropic and to EOB coordinates at 5PN and agree with the results in the literature \cite{Bern:2019nnu,Damour:2019lcq}. At 6PN we compare to the Hamiltonians in isotropic coordinates either given in \cite{Bern:2019nnu} or resulting from the scattering angle. We find a canonical transformation from our Hamiltonian in harmonic coordinates to \cite{Bern:2019nnu}, but not to \cite{Damour:2019lcq}. This implies that we also agree on all observables with \cite{Bern:2019nnu} to the sixth post--Newtonian order to $G_N^3$.

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