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arXiv 1408.2885gr-qcastro-ph.HE
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Kerr时空中标量荷的自作用力:倾斜圆轨道

Self force on a scalar charge in Kerr spacetime: inclined circular orbits

Niels Warburton

摘要:

精确地模拟天体物理学的极端质量比数列需要计算克尔时空中轨道的引力自作用力。必要的计算技术通常非常复杂,因此,为了建立特定的计算方法,经常开发玩具标量场模型。为此,我提出了一个计算的标量场自作用力的粒子运动的(固定)倾斜的圆形测地线的背景克尔黑洞。我在频域中进行计算,并演示如何将模态和正则化过程应用于所有四个分量的自作用力。我提出了一些强场轨道的结果,可作为基准新兴的自作用力计算技术在克尔时空。

英文摘要:

Accurately modeling astrophysical extreme-mass-ratio-insprials requires calculating the gravitational self-force for orbits in Kerr spacetime. The necessary calculation techniques are typically very complex and, consequently, toy scalar-field models are often developed in order to establish a particular calculational approach. To that end, I present a calculation of the scalar-field self-force for a particle moving on a (fixed) inclined circular geodesic of a background Kerr black hole. I make the calculation in the frequency-domain and demonstrate how to apply the mode-sum regularization procedure to all four components of the self-force. I present results for a number of strong-field orbits which can be used as benchmarks for emerging self-force calculation techniques in Kerr spacetime.

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