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arXiv 1610.02810gr-qc
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具有标量场的二次引力场中的重磁效应

Gravitomagnetic effects in quadratic gravity with a scalar field

Andrew Finch, Jackson Levi Said

摘要:

影响围绕引力源运行的物体的两种引力磁效应是大地效应和透镜-瑟林效应。前者描述了一个旋转陀螺仪的轴的进动角,而在轨道上围绕一个非旋转的引力源,而后者提供了一个旋转源的情况下,这个角度的校正。本文导出了二次引力中的有关方程,并把它们与广义相对论中的等价方程联系起来。本文从研究具有标量场的二次引力的开普勒第三定律出发,介绍了轴对称旋转引力源对赤道圆轨道上的轨道物体的影响。

英文摘要:

The two gravitomagnetic effects which influence bodies orbiting around a gravitational source are the geodetic effect and the Lense-Thirring effect. The former describes the precession angle of the axis of a spinning gyroscope while in orbit around a nonrotating gravitational source whereas the latter provides a correction for this angle in the case of a spinning source. In this paper we derive the relevant equations in quadratic gravity and relate them to their equivalents in general relativity. Starting with an investigation into Kepler's third law in quadratic gravity with a scalar field, the effects of an axisymmetric and rotating gravitational source on an orbiting body in a circular, equatorial orbit are introduced.

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