发表机构
Istituto per le Applicazioni del Calcolo “M. Picone,” CNR; School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS（意大利国家研究委员会计算应用研究所; 杭州高等研究院基础物理与数学学院，中国科学院大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究利用MPM形式论计算了自旋双体系统在2PN精度下的辐射损失，推广至自旋平方阶，并发现高精度下径向下落偏差必然出现。
AI 中文摘要
我们研究了自旋双体系统在对齐自旋情形下的双曲型运动，利用MPM形式论计算了所有辐射损失（达到2PN绝对精度并包含自旋平方修正），推广了先前仅适用于自旋线性阶的结果[Phys. Rev. D \ extbf{108}, no.6, 064049 (2023)]。领先PM阶的结果与现有文献进行了核对，而更高阶PM结果（在2PN精度内）则是本工作的新贡献。作为我们一般结果的副产品，我们分析了支持径向下落的旋转情形（在2PN精度并包含自旋平方阶贡献），表明随着PN精度的提高，径向下落的偏差必然出现。
英文摘要
We study the spinning two-body system in the aligned spin case for hyperboliclike motions computing all radiative losses (at the 2PN absolute accuracy and including spin-squared corrections) using the MPM formalism and generalizing previous results valid at linear order in spin [Phys. Rev. D \textbf{108}, no.6, 064049 (2023)]. Leading PM order results are checked against existing literature, whereas higher-order PM results (within the 2PN accuracy) are new with this work. As a by-product of our general results we analyze the spinning situation which supports radial fall (at 2PN and including spin-squared accuracy level contributions), showing that as soon as the PN accuracy increases deviations from radial fall appear necessarily.
Comments17 pages, no figures
