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arXiv 2103.11157gr-qchep-th
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从局部重力加速度测量得到的牛顿常数的变化

Variance of Newtonian constant from local gravitational acceleration measurements

De-Chang Dai

摘要:

利用IGETS的绝对重力加速度测量数据,研究了重力加速度的方差。22年来$δg /g$的相对方差小于$4\times 10^{-8}$。由于是$δG /G\lessapproxδg /g $,这意味着牛顿常数的相对方差小于基于类正弦振荡假设的$3\times 10^{-9}$。该限值比现有的$G$测量值至少好4个数量级。来自不同实验的报告的$G$测量值的分散值最有可能来自与这些实验相关的系统误差,而不是由于$G$的固有时间变化。我们还发现,$\dot{ G} /G<5.61\times 10^{-10} \text{yr}^{-1}$基于线性假设。这是迄今为止最好的陆地观测结果。

英文摘要:

We use IGETS absolute gravitational acceleration measurement data to study the gravitational acceleration variance. The relative variance of $δg /g$ in 22 years is less than $4\times 10^{-8}$. Since $δG /G\lessapproxδg /g $, this implies the relative variance of Newtonian constant is less than $3\times 10^{-9}$ based on an sine-like oscillation hypothesis. This limit is at least 4 orders of magnitude better than the existing $G$ measurements. The scattered values of reported $G$ measurements coming from different experiments are most probably coming from systematic errors associated with these experiments and not due to intrinsic time variation of $G$. We also find that $\dot{ G} /G<5.61\times 10^{-10} \text{yr}^{-1}$ based on a linear hypothesis. This is the best terrestrial result so far.

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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