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arXiv 2109.01384gr-qchep-th
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Einstein-Cartan理论中引力波的第一次后牛顿生成

First-post-Newtonian generation of gravitational waves in Einstein-Cartan theory

Emmanuele Battista, Vittorio De Falco

摘要:

本文利用Blanchet-Damour形式,在Einstein-Cartan理论的背景下,研究了后牛顿第一阶引力波的产生问题。利用挠率张量几何描述了缓慢运动、弱应力、弱自引力源的量子内禀自旋。我们得到的表达式的源多极矩与所需的精度。最低阶非辐射矩和渐近引力波形的物理意义的分析也被执行。最后,我们得出我们的结论,并估计的数量级的自旋贡献的引力波信号。

英文摘要:

In this paper we investigate the gravitational-wave generation problem at the first post-Newtonian order in the context of Einstein-Cartan theory by exploiting the Blanchet-Damour formalism. The quantum intrinsic spin carried by slowly moving, weakly stressed, weakly self-gravitating sources is described geometrically by means of the torsion tensor. We obtain the expression of the source multipole moments with the required accuracy. The analysis of the physical meaning of the lowest-order non-radiative moments and of the asymptotic gravitational waveform is also performed. Eventually, we draw our conclusions and estimate the order of magnitude of the spin contributions in the gravitational-wave signal.

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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