用SYRTE原子喷泉和H脉泽的长期比较检验由于周期引力和助推引起的局部位置和基本常数不变性
Testing local position and fundamental constant invariance due to periodic gravitation and boost using long-term comparison of the SYRTE atomic fountains and H-masers
摘要：
将三个Cs喷泉钟和一个Rb喷泉钟的频率与不同的氢脉泽频率进行比较，以寻找与地球上太阳引力势变化相关的周期性变化，以及相对于宇宙微波背景（CMB）静止坐标系的增强。这些数据集跨越了八年多的时间。在这样的实验中，长期噪声的主要来源是与各种H脉泽相关的偏移和线性漂移。漂移的变化范围从几乎不可测量到每天1.3*10^-15。为了避免这些影响，我们对数据应用数值导数，这在搜索周期信号时显著降低了标准误差。我们确定了铯喷泉氢脉泽与引力比较时假定的局部位置不变性（LPI）系数的标准误差为4.8*10^-6，铷喷泉氢脉泽与引力比较时为10^-5。根据同样的数据，假定的助推LPI系数相对于CMB静止坐标系的测量精度高达10^11分之几。通过将这些升压不变性实验与低温蓝宝石振荡器和氢脉泽的比较相结合，确定了升压破坏矢量的所有九个系数相对于基本常数不变性（分别是精细结构常数、电子质量和夸克质量）的独立极限，精确度高达10^10。
英文摘要：
The frequencies of three separate Cs fountain clocks and one Rb fountain clock have been compared to various hydrogen masers to search for periodic changes correlated with the changing solar gravitational potential at the Earth and boost with respect to the Cosmic Microwave Background (CMB) rest frame. The data sets span over more than eight years. The main sources of long-term noise in such experiments are the offsets and linear drifts associated with the various H-masers. The drift can vary from nearly immeasurable to as high as 1.3*10^-15 per day. To circumvent these effects we apply a numerical derivative to the data, which significantly reduces the standard error when searching for periodic signals. We determine a standard error for the putative Local Position Invariance (LPI) coefficient with respect to gravity for a Cs-Fountain H-maser comparison of 4.8*10^-6 and 10^-5 for a Rb-Fountain H-maser comparison. From the same data the putative boost LPI coefficients were measured to a precision of up to parts in 10^11 with respect to the CMB rest frame. By combining these boost invariance experiments to a Cryogenic Sapphire Oscillator versus H-maser comparison, independent limits on all nine coefficients of the boost violation vector with respect to fundamental constant invariance (fine structure constant, electron mass and quark mass respectively), were determined to a precision of parts up to 10^10.
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