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arXiv 2411.03382hep-thgr-qc
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黑洞散射中的吸收效应

Absorptive Effects in Black Hole Scattering

Yilber Fabian Bautista, Yu-Tin Huang, Jung-Wook Kim

AI总结:

本文定义吸收性康普顿振幅,用于计算黑洞散射中的吸收效应,通过Kosower-Maybee-O'Connell形式得到质量变化,并重现后牛顿功率损失,适用于一般自旋和物理Kerr参数。

摘要:

在本文中,我们定义了吸收性康普顿振幅,该振幅捕捉了黑洞微扰理论中自旋权重为$s$的波散射的吸收因子。在$G M \omega$展开的首阶,此类振幅纯虚且可表示为接触项。借助这些振幅,我们通过Kosower-Maybee-O'Connell形式计算了黑洞散射事件中的质量变化,其中Schwarzschild/Kerr黑洞的静质量因吸收由其他致密天体产生的引力、电磁或标量场而改变。我们重现了先前在后牛顿展开中计算的功率损失。本文结果适用于相似质量比和一般自旋取向,同时保持Kerr自旋参数处于物理区域$\chi\le 1$。

英文摘要:

In this paper we define absorptive Compton amplitudes, which captures the absorption factor for waves of spin-weight-$s$ scattering in black hole perturbation theory. At the leading order, in the $G M ω$ expansion, such amplitudes are purely imaginary and expressible as contact terms. Equipped with these amplitudes we compute the mass change in black hole scattering events via Kosower-Maybee-O'Connell formalism, where the rest mass of Schwarzschild/Kerr black hole is modified due to absorption of gravitational, electromagnetic, or scalar fields sourced by other compact object. We reproduced the power loss previously computed in the post-Newtonian expansion. The results presented here hold for similar mass ratios and generic spin orientation, while keeping the Kerr spin parameter to lie in the physical region $χ\le 1$.

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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