arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2210.06451hep-thgr-qc
收藏

线性响应、哈密顿量与辐射自旋两体动力学

Linear Response, Hamiltonian and Radiative Spinning Two-Body Dynamics

Gustav Uhre Jakobsen, Gustav Mogull

AI总结:

该研究利用自旋超对称世界线量子场论计算3PM阶自旋二阶的两致密天体散射可观测量,通过推广线性响应公式推导部分结果,构建含修正的3PM两体哈密顿量,并给出对齐自旋束缚态动力学的相关验证与结果。

摘要:

我们利用自旋超对称世界线量子场论(Worldline Quantum Field Theory)形式体系,计算了两个自旋黑洞或中子星散射过程中的动量冲量和自旋反冲,计算精度达到自旋二阶、后闵可夫斯基(post-Minkowskian, PM)三阶,包含辐射反作用效应,且自旋方向可任意不对齐。通过将Bini和Damour的线性响应公式推广至包含不对齐自旋的情形,我们还从更低PM阶的散射数据推导出了这些可观测量的保守部分与辐射部分的部分结果。通过求解哈密顿运动方程,我们还利用保守散射角推导出了完整的3PM两体哈密顿量,其中包含有限尺寸修正和不对齐自旋-自旋相互作用。最后,我们描述了自旋矢量对齐情形下束缚两体动力学的映射:包括圆轨道结合能与数值相对论结果对比的数值图、NNLO PN结合能的解析验证,以及连续轨道的能量损失。

英文摘要:

Using the spinning, supersymmetric Worldline Quantum Field Theory formalism we compute the momentum impulse and spin kick from a scattering of two spinning black holes or neutron stars up to quadratic order in spin at third post-Minkowskian (PM) order, including radiation-reaction effects and with arbitrarily mis-aligned spin directions. Parts of these observables, both conservative and radiative, are also inferred from lower-PM scattering data by extending Bini and Damour's linear response formula to include mis-aligned spins. By solving Hamilton's equations of motion we also use a conservative scattering angle to infer a complete 3PM two-body Hamiltonian including finite-size corrections and mis-aligned spin-spin interactions. Finally, we describe mappings to the bound two-body dynamics for aligned spin vectors: including a numerical plot of the binding energy for circular orbits compared with numerical relativity, analytic confirmation of the NNLO PN binding energy and the energy loss over successive orbits.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑