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arXiv 1906.10071hep-thgr-qc
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一般自旋方向的黑洞最小耦合振幅散射

Black-hole scattering with general spin directions from minimal-coupling amplitudes

Alfredo Guevara, Alexander Ochirov, Justin Vines

摘要:

研究了自旋黑洞的经典散射与大质量自旋$s$粒子的量子振幅之间的联系。一般的自旋取向的黑洞被认为是,允许他们的自旋被偏转与他们的动量。我们重新推导的自旋指数结构的相关树级振幅从最小耦合到爱因斯坦的引力,在$s\to\infty$限制产生的黑洞的完整系列的自旋诱导多极。由此产生的散射函数被认为是以一种简单的方式编码的黑洞动量和自旋在第一后闵可夫斯基阶已知的净变化。我们将我们的发现与其他地方开发的用于从振幅计算此类可观测值的严格框架相关联。

英文摘要:

We study the link between classical scattering of spinning black holes and quantum amplitudes for massive spin-$s$ particles. Generic spin orientations of the black holes are considered, allowing their spins to be deflected on par with their momenta. We rederive the spin-exponentiated structure of the relevant tree-level amplitude from minimal coupling to Einstein's gravity, which in the $s\to\infty$ limit generates the black holes' complete series of spin-induced multipoles. The resulting scattering function is seen to encode in a simple way the known net changes in the black-hole momenta and spins at first post-Minkowskian order. We connect our findings to a rigorous framework developed elsewhere for computing such observables from amplitudes.

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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