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arXiv 1208.0619gr-qc
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一类球对称静态Finsler时空中的可观测效应

Observable effects in a class of spherically symmetric static Finsler spacetimes

Claus Laemmerzahl, Volker Perlick, Wolfgang Hasse

摘要:

在介绍了芬斯勒时空的定义及其对称性之后,我们考虑了一类球对称的静态芬斯勒时空,它们是史瓦西时空的小扰动。从史瓦西时空的偏差被编码在三个扰动函数$ϕ_0(r)$,$ϕ_1(r)$和$ϕ_2(r)$有以下解释:$ϕ_0$扰动的时间函数,$ϕ_1$扰动的径向长度测量和$ϕ_2$介绍了空间各向异性,这是一个真正的芬斯勒功能。在这类时空中,我们给出了自由下落粒子和光线的运动方程,即类时测地线和类光测地线,并讨论了太阳系中观测对扰动函数的限制。

英文摘要:

After some introductory discussion of the definition of Finsler spacetimes and their symmetries, we consider a class of spherically symmetric and static Finsler spacetimes which are small perturbations of the Schwarzschild spacetime. The deviations from the Schwarzschild spacetime are encoded in three perturbation functions $ϕ_0(r)$, $ϕ_1(r)$ and $ϕ_2(r)$ which have the following interpretations: $ϕ_0$ perturbs the time function, $ϕ_1$ perturbs the radial length measurement and $ϕ_2$ introduces a spatial anisotropy which is a genuine Finsler feature. We work out the equations of motion for freely falling particles and for light rays, i.e. the timelike and lightlike geodesics, in this class of spacetimes, and we discuss the bounds placed on the perturbation functions by observations in the Solar system.

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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