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arXiv 1802.10201gr-qc
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标量-张量理论中紧联系统的动力学:I。后牛顿三阶运动方程

Dynamics of compact binary systems in scalar-tensor theories: I. Equations of motion to the third post-Newtonian order

Laura Bernard

摘要:

标量-张量理论是最自然、约束最好的引力理论之一,同时仍然允许与广义相对论有很大的偏差。在无质量标量张量理论中,给出了三阶后牛顿(PN)非自旋致密双星系统的运动方程。我们将广义相对论中调和坐标系点粒子的福克作用量与标量张量理论的特殊性相适应。我们使用维正则化来治疗红外和紫外发散,我们一贯包括尾部效应,有助于由非本地项的动态。这项工作对于计算标量引力波形和2 PN阶的能流是至关重要的。

英文摘要:

Scalar-tensor theories are one of the most natural and well-constrained alternative theories of gravity, while still allowing for significant deviations from general relativity. We present the equations of motion of nonspinning compact binary systems at the third post-Newtonian (PN) order in massless scalar-tensor theories. We adapt the Fokker action of point particles in harmonic coordinates in general relativity to the specificities of scalar-tensor theories. We use dimensional regularisation to treat both the infrared and ultraviolet divergences, and we consistently include the tail effects that contribute by a non-local term to the dynamics. This work is crucial in order to compute the scalar gravitational waveform and the energy flux at 2PN order.

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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