论文标题
关于重力标量理论的$ g $的变化
On variations of $G$ in the geometric scalar theory of gravity
论文作者
论文摘要
我们分析了有效的牛顿重力常数$ g _ {\ rm n} $的可能变异性，这是M. Novello等人建议的几何标量理论的框架。 [JCAP 06，014（2013）; ARXIV：1212.0770]。在太阳系中，$ g _ {\ rm n} $的空间变化显示出可通过现代仪器可检测到的数量级。至于$ g _ {\ rm n} $随着宇宙学的时间的变化，它显示了（至少对于原始论文和相应的宇宙学模型中讨论的理论的特定表述），这些变化比观察结果所允许的要快。
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.
