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arXiv 2004.01233gr-qcastro-ph.COhep-th
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引力几何标量理论中的$G$变量

On variations of $G$ in the geometric scalar theory of gravity

K. A. Bronnikov

备注：
7 two-column pages, no figures. A few references added
发表信息：
Euro Phys. J. C 80, 434 (2020)
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摘要：

本文在M。Novello等人[JCAP 06，014（2013）; arXiv：1212.0770].太阳系中的$G_{\rm N}$的空间变化被证明具有现代仪器可检测到的数量级。至于$G_{\rm N}$随宇宙学时间的变化，已经表明（至少对于在原始论文中讨论的理论的特定表述和相应的宇宙学模型），这些变化比观测所允许的要快得多。

英文摘要：

We analyze the possible variability of the effective Newtonian gravitational constant $G_{\rm N}$ in space and time in the framework of the geometric scalar theory of gravity suggested by M. Novello et al. [JCAP 06, 014 (2013); arXiv: 1212.0770]. Spatial variations of $G_{\rm N}$ in the Solar system are shown to have orders of magnitude detectable by modern instruments. As to variations of $G_{\rm N}$ with cosmological time, it is shown (at least for the particular formulation of the theory discussed in the original paper and the corresponding cosmological models) that these variations are more rapid than is allowed by observations.

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