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arXiv 2003.10127gr-qcastro-ph.COastro-ph.IM
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Eöt-Wash实验修正重力的模型比较试验

Model Comparison tests of modified gravity from the Eöt-Wash experiment

Aditi Krishak, Shantanu Desai

摘要:

Perivolaropoulos等人(arXiv:1904.09462)(P19)认为Eöt-Wash实验中的剩余扭矩数据与振荡信号一致。这可能是非局部修正重力理论的特征,也可能是数据中的其他系统误差。我们使用贝叶斯和信息理论标准独立地评估这种振荡信号在相同数据中的可行性,以补充P19中的频率论分析。我们将这些数据拟合到三种不同的参数化(偏移牛顿,汤川和振荡模型),并使用AIC,BIC,WAIC和贝叶斯因子评估振荡模型的重要性。与牛顿模型相比,所有这些技术为振荡模型提供了决定性的证据,前提是相位固定为与P19中相同的值。如果允许相位变化,那么BIC、WAIC和贝叶斯检验的显著性降低为强有力的证据,而只有AIC仍然显示出决定性的证据。我们的分析代码已公开提供。

英文摘要:

Perivolaropoulos et al (arXiv:1904.09462) (P19) have argued that the residual torque data in the Eöt-Wash experiment is consistent with an oscillating signal. This could either be a signature of non-local modified gravity theories or some other systematic error in the data. We independently assess the viability of such an oscillating signal in the same data using Bayesian and information theoretical criterion, to complement the frequentist analysis in P19. We fit this data to three different parametrizations (an offset Newtonian, Yukawa, and an oscillating model), and assess the significance of the oscillating model using AIC, BIC, WAIC, and Bayes factor. All these techniques provide decisive evidence for the oscillating model compared to the Newtonian model, provided the phase is fixed to the same value as in P19. If the phase is allowed to vary, then significance from BIC, WAIC, and Bayes based tests reduces to strong evidence, whereas only AIC still shows decisive evidence. Our analysis codes have been made publicly available.

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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