1. Test of non-Newtonian gravitational force at micrometer range
- Author
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Luo, Pengshun, Wang, Jianbo, Guan, Shengguo, Wu, Wenjie, Tian, Zhaoyang, Yang, Shanqing, Shao, Chenggang, and Luo, Jun
- Subjects
General Relativity and Quantum Cosmology ,High Energy Physics - Phenomenology - Abstract
We report an experimental test of non-Newtonian gravitational forces at mi- crometer range. To experimentally subtract off the Casimir force and the electrostatic force background, differential force measurements were performed by sensing the lateral force between a gold sphere and a density modulated source mass using a soft cantilever. The current sensitivity is limited by the patch electrostatic force, which is further improved by two dimensional (2D) force mapping. The preliminary result sets a model independent constraint on the Yukawa type force at this range., Comment: Presented at the Seventh Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, June 20-24, 2016
- Published
- 2016