Tests of the Gravitational Inverse-Square Law below the Dark-Energy Length Scale

2006/11/14 by D. J. Kapner, T. S. Cook, E. G. Adelberger +4 · 2 citations
Physics and Astronomy · #hep-ph #gr-qc

paper · pdf · doi:10.1103/physrevlett.98.021101

published as Phys.Rev.Lett.98:021101,2007 · 4 pages, 6 figures

arxiv created 2006/11/14 · arxiv updated 2009/12/01

Abstract

We conducted three torsion-balance experiments to test the gravitational inverse-square law at separations between 9.53 mm and 55 micrometers, probing distances less than the dark-energy length scale λ_{\rm d}=√[4]ℏ c/ρ_{\rm d}≈ 85 μm. We find with 95% confidence that the inverse-square law holds (|α| ≤ 1) down to a length scale λ= 56 μm and that an extra dimension must have a size R ≤ 44 μm.

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