Quadratic-in-spin interactions at fifth post-Newtonian order probe new physics
Quadratic-in-spin interactions at fifth post-Newtonian order probe new physics
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DOI：
10.1016/j.physletb.2022.137410
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发表时间：
2021-12
影响因子：
4.4
通讯作者：
Jung-Wook Kim;M. Levi;Zhewei Yin
中科院分区：
文献类型：
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作者：
Jung-Wook Kim;M. Levi;Zhewei Yin
我们第一次获得了所有的二次自旋相互作用在自旋双星在第三次领先的顺序在后牛顿（PN）引力，并提供其可观测的结合能和规范不变的角动量的关系。我们的结果是有效的通用紧凑的对象，轨道和自旋方向，并进入第五PN阶最大旋转的对象，从而推动国家的art.This是通过扩展的有效场理论的自旋引力对象，其计算应用。我们还发现了自旋物体所特有的一种新的有限尺寸效应，并以一个新的“自旋Love数”作为其特征系数，这是对引力和QCD的一个新的探索。
We obtain for the first time all quadratic-in-spin interactions in spinning binaries at the third subleading order in post-Newtonian (PN) gravity, and provide their observable binding energies and their gauge-invariant relations to the angular momentum. Our results are valid for generic compact objects, orbits, and spin orientations, and enter at the fifth PN order for maximally-rotating objects, thus pushing the state of the art. This is accomplished through an extension of the effective field theory of spinning gravitating objects, and of its computational application. We also discover a new finite-size effect which is unique to spinning objects, with a new “Spin Love number” as its characteristic coefficient, that is a new probe for gravity and QCD.