Perivolaropoulos et al (arXiv:1904.09462) (P19) have argued that the residual torque data in the Eot-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.

中文翻译：

---

来自 Eöt-Wash 实验的修正重力模型比较测试

Perivolaropoulos 等人 (arXiv:1904.09462) (P19) 认为 Eot-Wash 实验中的残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一些系统误差。我们使用贝叶斯和信息理论标准独立评估相同数据中这种振荡信号的可行性，以补充 P19 中的频率论分析。我们将这些数据拟合到三个不同的参数化（偏移牛顿模型、Yukawa 模型和振荡模型），并使用 AIC、BIC、WAIC 和贝叶斯因子评估振荡模型的显着性。所有这些技术都为振荡模型与牛顿模型相比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，那么来自 BIC、WAIC 和基于贝叶斯的测试的显着性降低到强有力的证据，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。