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arXiv 2210.04063gr-qcmath-phmath.MP
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III型Shapovalov时空的引力波:粒子轨迹、测地线偏离与潮汐加速度

Gravitational Waves of Type III Shapovalov Spacetimes: Particle Trajectories, Geodesic Deviation and Tidal Accelerations

Konstantin Osetrin, Evgeny Osetrin, Elena Osetrina

AI总结:

本文研究了Shapovalov III型引力波时空,获得了测试粒子运动方程与测地线偏离方程的精确通解,推导出潮汐加速度的精确形式,并给出了同步坐标系下的显式表达式,方法适用于广义相对论及修改引力理论。

摘要:

对于Shapovalov III型引力波时空,获得了测地线偏离方程和测试粒子运动方程的精确通解。在特权坐标系中找到了解,其中所考虑时空模型的度量依赖于波变量。获得了引力波潮汐加速度的精确形式。在所考虑的时空波模型中,可以构造测试粒子Hamilton-Jacobi方程的完全积分。找到了转换到同步坐标系的方程的显式形式,其中选择基准测地线上测试粒子的固有时间作为时间变量,并且时间和空间变量是分离的。在同步坐标系中,给出了所考虑波时空的度量形式,获得了测地线偏离向量和潮汐加速度向量的形式。本文使用的方法和获得的结果适用于广义相对论和修改引力理论中的引力波。所提出的方法被应用于Einstein真空方程的情况。

英文摘要:

For gravitational-wave spacetimes of Shapovalov type III, exact general solutions of geodesic deviation equations and equations of motion of test particles are obtained. Solutions are found in a privileged coordinate system, where the metric of the considered spacetime models depends on the wave variable. The exact form of tidal accelerations of the gravitational wave is obtained. In the considered wave models of spacetime, the complete integral of the Hamilton-Jacobi equations of test particles can be constructed. An explicit form of the equations for the transition to a synchronous coordinate system is found, where the proper time of a test particle on the base geodesic is chosen as the time variable, and the time and space variables are separated. In the synchronous coordinate system, the form of the metric of the considered wave spacetime is presented, the form of the geodesic deviation vector and the tidal acceleration vector are obtained. The methods used in the paper and the results obtained are applicable to gravitational waves both in the general theory of relativity and in modified theories of gravity. The proposed approaches are applied to the case of Einstein's vacuum equations.

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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