Tan Wen-Hai, Du An-Bin, Dong Wen-Can, Yang Shan-Qing, Shao Cheng-Gang, Guan Sheng-Guo, Wang Qing-Lan, Zhan Bi-Fu, Luo Peng-Shun, Tu Liang-Cheng, Luo Jun
MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics, PGMF and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China.
TianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Sun Yat-sen University (Zhuhai Campus), Zhuhai 519082, People's Republic of China.
Phys Rev Lett. 2020 Feb 7;124(5):051301. doi: 10.1103/PhysRevLett.124.051301.
We improve the test of the gravitational inverse-square law at the submillimeter range by suppressing the vibration of the electrostatic shielding membrane to reduce the disturbance coupled from the residual surface potential. The result shows that, at a 95% confidence level, the gravitational inverse-square law holds (|α|≤1) down to a length scale λ=48 μm. This work establishes the strongest bound on the magnitude α of the Yukawa violation in the range of 40-350 μm, and improves the previous bounds by up to a factor of 3 at the length scale λ≈70 μm. Furthermore, the constraints on the power-law potentials are improved by about a factor of 2 for k=4 and 5.
我们通过抑制静电屏蔽膜的振动来减少由残余表面电势耦合的干扰，从而改进了亚毫米范围内引力平方反比定律的测试。结果表明，在95%的置信水平下，引力平方反比定律在长度尺度λ = 48μm以下成立（|α|≤1）。这项工作在40 - 350μm范围内建立了关于汤川违反幅度α的最强限制，并在长度尺度λ≈70μm时将先前的限制提高了多达3倍。此外，对于k = 4和5，幂律势的约束提高了约2倍。
