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

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

2006-11-14

arxiv.org/abs/hep-ph/0611184v1

Phys.Rev.Lett.98:021101,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 6 figures

Scientific paper

10.1103/PhysRevLett.98.021101

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 $\lambda_{\rm d}=\sqrt[4]{\hbar c/\rho_{\rm d}}\approx 85 \mu$m. We find with 95% confidence that the inverse-square law holds ($|\alpha| \leq 1$) down to a length scale $\lambda = 56 \mu$m and that an extra dimension must have a size $R \leq 44 \mu$m.

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