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arXiv 2107.04513gr-qc
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$f(Q)$ -引力中的测地偏差方程

Geodesic Deviation Equation In $f(Q)$-Gravity

Jing-Theng Beh, Tee-how Loo, Avik De

摘要:

本文研究修正的$f(Q)$ -引力理论中的测地偏差方程。本文简要讨论了在均匀各向同性的Friedman-Lemaitre-Robertson-Walker(FLRW)时空中广义相对论的GDE公式,并利用其协变对应公式将其推广到修正的$f(Q)$ -引力中.得到了广义Mattig关系。最后给出了广义相对论中的Dyer-Roeder方程在$f(Q)$ -引力情形下的一个等价表达式。

英文摘要:

In the present paper we study the Geodesic Deviation Equation (GDE) in the modified $f(Q)$-gravity theories. The formulation of GDE in General Relativity in the case of the homogeneous and isotropic Friedman-Lemaître-Robertson-Walker (FLRW) spacetime is briefly discussed and then extended in modified $f(Q)$-gravity using its covariant counterpart. The generalised Mattig relation is obtained. Finally, an equivalent expression to the Dyer-Roeder equation in General Relativity in the case of $f(Q)$-gravity is presented.

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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