arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0801.1874physics.atom-phphysics.gen-ph
收藏

用$^{87}$ Sr光晶格钟研究基本常数与引力耦合的新极限

New Limits on Coupling of Fundamental Constants to Gravity Using $^{87}$Sr Optical Lattice Clocks

S. Blatt, A. D. Ludlow, G. K. Campbell, J. W. Thomsen, T. Zelevinsky, M. M. Boyd, J. Ye, X. Baillard, M. Fouché, R. Le Targat, A. Brusch, P. Lemonde, M. Takamot… 展开作者

S. Blatt, A. D. Ludlow, G. K. Campbell, J. W. Thomsen, T. Zelevinsky, M. M. Boyd, J. Ye, X. Baillard, M. Fouché, R. Le Targat, A. Brusch, P. Lemonde, M. Takamoto, F. -L. Hong, H. Katori, V. V. Flambaum

摘要:

中性$^{87}$ Sr中的$^1\mathrm{S}_0$ - $^3\mathrm{P}_0$时钟跃迁频率$ν_\text{Sr}$相对于Cs标准已经由位于博尔德、巴黎和东京的三个独立实验室在过去三年中测量。在$1\times 10^{-15}$能级上的一致性使得$ν_\text{Sr}$成为最佳一致的光学原子频率。我们结合周期性变化的$^{87}$锶时钟频率与$^{199}$汞$^+$和H-脉泽数据测试本地位置不变性获得最强的限制,迄今为止的引力耦合系数的精细结构常数$α$,电子-质子质量比$μ$和轻夸克质量。此外,在$^{199}$ Hg $^+$、$^{171}$ Yb $^+$和H之后,我们又增加了$^{87}$ Sr作为第四种光学原子钟物种,以增强对$α$和$μ$年漂移的约束.

英文摘要:

The $^1\mathrm{S}_0$-$^3\mathrm{P}_0$ clock transition frequency $ν_\text{Sr}$ in neutral $^{87}$Sr has been measured relative to the Cs standard by three independent laboratories in Boulder, Paris, and Tokyo over the last three years. The agreement on the $1\times 10^{-15}$ level makes $ν_\text{Sr}$ the best agreed-upon optical atomic frequency. We combine periodic variations in the $^{87}$Sr clock frequency with $^{199}$Hg$^+$ and H-maser data to test Local Position Invariance by obtaining the strongest limits to date on gravitational-coupling coefficients for the fine-structure constant $α$, electron-proton mass ratio $μ$ and light quark mass. Furthermore, after $^{199}$Hg$^+$, $^{171}$Yb$^+$ and H, we add $^{87}$Sr as the fourth optical atomic clock species to enhance constraints on yearly drifts of $α$ and $μ$.

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。

↑