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arXiv 2307.05971gr-qchep-th
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有效单体理论中含辐射反作用效应、至第四后闵可夫斯基阶的无自旋双星有效度规

Effective metric of spinless binaries with radiation-reaction effect up to fourth Post-Minkowskian order in effective-one-body theory

Jiliang Jing, Weike Deng, Sheng Long, Jieci Wang

AI总结:

本文利用散射角构造至第四后闵可夫斯基阶且含辐射反作用的无自旋双星有效度规,并通过要求 $Ψ_4^B$ 解耦来固定参数自由度,以建立自洽的有效单体理论。

摘要:

借助散射角,我们获得了含辐射反作用效应、至第四后闵可夫斯基阶的无自旋双星有效度规,该度规是有效单体理论的基础。我们注意到,有效度规的参数存在自由度,因为在每个后闵可夫斯基阶,一个方程对应两个参数。因此,为了构建自洽的有效单体理论,使 Hamiltonian、辐射反作用力以及引力波“加号”和“叉号”模式的波形都建立在同一物理模型之上,我们可以通过要求引力扰动 Weyl 张量的零标架分量 $Ψ_4^B$ 在有效时空中解耦来固定这些自由度。

英文摘要:

By means of the scattering angles, we obtain an effective metric of spinless binaries with radiation-reaction effects up to fourth post-Minkowskian order, which is the foundation of the effective-one-body theory. We note that there are freedoms for the parameters of the effective metric because one equation corresponds to two parameters for each post-Minkowskian order. Accordingly, in order to construct a self-consistent effective-one-body theory in which the Hamiltonian, radiation-reaction forces and waveforms for the ``plus" and ``cross" modes of the gravitational wave should be based on the same physical model, we can fix these freedoms by requiring the null tetrad component of the gravitationally perturbed Weyl tensor $Ψ_4^B$ to be decoupled in the effective spacetime.

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。

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