KE Jun, a second-year doctoral student majoring in control science and engineering from the School of Mechanical Engineering and Electronic Information, published “Combined Test of the Gravitational Inverse-Square Law at the Centimeter Range” on Physical Review Letters as the first author. The corresponding author is his supervisor Prof. LUO Jie.
The research is accomplished by the team led by Prof. LUO Jie, team led by Prof. SHAO Chenggang from Huazhong University of Science and Technology, and team led by Prof. YANG Shanqing from Sun Yat-sen University. The abstract of the paper is as follows.
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/r2 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.
Constraints on Yukawa violation of the Newtonian1/r2 law. The heavy lines labeled HUST. This work, Irvine, and Maryland show the experimental constraints, respectively (all plot with 2σ limits).
Link: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.211101
