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arXiv · 1512.09134

A Gravity of Earth Measurement with a qBOUNCE Experiment

G. Cronenberg·H. Filter·M. Thalhammer·T. Jenke·H. Abele·P. Geltenbort
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Abstract

We report a measurement of the local acceleration $g$ with ultracold neutrons based on quantum states in the gravity potential of the Earth. The new method uses resonant transitions between the states $|1> -> |3>$ and for the first time between $|1> -> |4>$. The measurements demonstrate that Newton's Inverse Square Law of Gravity is understood at micron distances at an energy level of $10^{-14}$ eV with $\frac{\Delta g}{g}=4\times10^{-3}$. The results provide constraints on any possible gravity-like interaction at a micrometer interaction range. In particular, a dark energy candidate, the chameleon field is restricted to $\beta<6.9\times10^{6}$ for $n=2$ (95\% C.L.).

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G. Cronenberg, H. Filter, M. Thalhammer, T. Jenke, H. Abele, P. Geltenbort. 2015-12-30. A Gravity of Earth Measurement with a qBOUNCE Experiment. https://arxiv.org/abs/1512.09134

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