论文标题
Eöt-wash实验的修饰重力的模型比较测试
Model Comparison tests of modified gravity from the Eöt-Wash experiment
论文作者
论文摘要
Perivolaropoulos等人（ARXIV：1904.09462）（p19）认为，Eöt-wash实验中的残留扭矩数据与振荡信号一致。这可能是非本地修改的重力理论的签名，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在相同数据中独立评估这种振荡信号的生存能力，以补充p19中的频繁分析。我们将这些数据拟合到三种不同的参数化（偏移牛顿，Yukawa和一个振荡模型），并使用AIC，BIC，WIAC，WAIC和BAYES因子评估振荡模型的重要性。与牛顿模型相比，所有这些技术都为振荡模型提供了决定性的证据，前提是该阶段固定在与p19中相同的值。如果允许该阶段变化，则基于BIC，WAIC和基于贝叶斯的测试的显着性将减少到有力的证据，而只有AIC仍然显示出果断的证据。我们的分析代码已公开可用。
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.
