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arXiv 1709.07261gr-qc
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有挠时空中的Raychaudhuri方程

Raychaudhuri equation in spacetimes with torsion

Paulo Luz, Vincenzo Vitagliano

摘要:

给定一个挠率为非零的时空,讨论了同余中无穷小闭曲线间分离向量的演化方程。我们表明,扭转场的存在导致,在一般情况下,切线和正交的影响的同余,特别是,一个完全通用的扭转场的存在下,有助于测试粒子之间的相对加速度。我们推导出,在文献中的第一次,Raychaudhuri方程的类时曲线和空曲线在最一般的扭转场的时空的同余。

英文摘要:

Given a spacetime with nonvanishing torsion, we discuss the equation for the evolution of the separation vector between infinitesimally close curves in a congruence. We show that the presence of a torsion field leads, in general, to tangent and orthogonal effects on the congruence; in particular, the presence of a completely generic torsion field contributes to a relative acceleration between test particles. We derive, for the first time in the literature, the Raychaudhuri equation for a congruence of timelike and null curves in a spacetime with the most generic torsion field.

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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