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arXiv 1901.02604gr-qc
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来自Cavendish型引力常量实验的修正牛顿动力学证据

Evidence for Modified Newtonian Dynamics from Cavendish-type gravitational constant experiments

Norbert Klein

摘要:

在修正的牛顿动力学(MOND)框架内分析了卡文迪什型实验的引力常量G的最新实验结果。在假设水平时间相关的重力加速度的大小决定MOND修正量的情况下,将MOND修正应用于摆的运动方程。地球局部引力场的大的垂直分量完全由扭摆按照牛顿第三定律的对准来补偿,因此不考虑MOND校正。本文从分析实际的重力和电磁混合力矩扭摆的MOND修正运动方程出发,导出了对Cavendish型G实验的不同工作模式所测G值进行有意义MOND修正的简单规则。根据这一分析,Quinn等人的BIPM实验中静态偏转和静电伺服方法确定的G的差异以及Li等人的HUST实验中摆动时间和角加速度反馈方法之间的G差异,可以通过MOND校正完全解决,MOND校正使用一个由单参数拟合确定的通用MOND插值函数。经MOND校正的BIPM和HUST结果,以及冈拉克和梅尔科维茨、施拉明格等人和纽曼等人的G实验的其他单一方法结果,得出平均G值为6.67422 × 10 ^-11 m^3 kg^-1 s^-2,标准偏差仅为12.5 ppm。应用MOND校正程序和拟合插值函数G实验被认为是最可行的MOND适合星系旋转曲线是一致的。

英文摘要:

Recent experimental results for the gravitational constant G from Cavendish-type experiments were analysed in the framework of Modified Newtonian Dynamics (MOND). MOND corrections were applied to the equation of motion of a pendulum, under the assumption that the magnitude of the horizontal time dependent gravitational acceleration determines the amount of MOND corrections. The large vertical component of the local gravitational field of the earth is fully compensated by the alignment of the torsion pendulum in accordance with Newtons third law and therefore not considered for MOND corrections. From the analysis of the MOND corrected equation of motion of a realistic torsion pendulum with mixed gravitational and electromagnetic restoring torque simple rules for meaningful MOND corrections of measured G values determined by different operational modes of Cavendish type G experiments were derived. Based on this analysis the reported discrepancies for G determined by static deflection and electrostatic servo methods of the BIPM experiment by Quinn et al. and between time-of-swing and angular acceleration feedback methods for the HUST experiment by Li et al. could be fully resolved by MOND corrections using one common MOND interpolation function, determined by a one parameter fit. The MOND corrected BIPM and HUST results, along with other single method results from G experiments by Gundlach and Merkovitz, Schlamminger et al. and Newman et al. lead to an average G value of 6.67422x10^-11 m^3 kg^-1 s^-2 with a standard deviation of 12.5 ppm only. The applied MOND correction procedure and the fitted interpolation function employed for the G experiments were found to be consistent with the most viable MOND fits to galaxy rotation curves.

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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