Combined Test of the Gravitational Inverse-Square Law at the Centimeter Range
Jun Ke1, Jie Luo1, Cheng-Gang Shao2
1School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, People's Republic of China.
Abstract:
Experiments measuring the Newtonian gravitational constant G can offer uniquely sensitive probes of the test of the gravitational inverse-square law. An analysis of the non-Newtonian effect in two independent experiments measuring G is presented, which permits a test of the 1/r^{2} law at the centimeter range. This work establishes the strongest bound on the magnitude α of Yukawa-type deviations from Newtonian gravity in the range of 5-500 mm and improves the previous bounds by up to a factor of 7 at the length range of 60-100 mm.
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