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arXiv · 1402.2528

Stronger constraints on axion from measuring the Casimir interaction by means of dynamic atomic force microscope

V. B. Bezerra·G. L. Klimchitskaya·V. M. Mostepanenko·C. Romero
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Abstract

We calculate the additional force due to two-axion exchange acting in a sphere-disc geometry, used in experiments on measuring the gradient of the Casimir force. With this result, stronger constraints on the pseudoscalar coupling constants of an axion and axion-like particles to a proton and a neutron are obtained over the wide range of axion masses from 0.03mV to 1eV. Among the three experiments with Au-Au, Au-Ni and Ni-Ni boundary surfaces performed by means of dynamic atomic force microscope, major improving is achieved for the experiment with Au-Au test bodies. Here, the constraints obtained are stronger up to a factor of 170, as compared to the previously known ones. The largest strengthening holds for the axion mass 0.3eV.

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V. B. Bezerra, G. L. Klimchitskaya, V. M. Mostepanenko, C. Romero. 2014-03-06. Stronger constraints on axion from measuring the Casimir interaction by means of dynamic atomic force microscope. https://doi.org/10.1103/physrevd.89.075002

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