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Acoustic tests of Lorentz symmetry using Bulk Acoustic Wave quartz oscillators

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arxiv 1607.07179 v2 pith:Q2REN362 submitted 2016-07-25 hep-ph physics.ins-det

M. Goryachev , A. Lo , Ph. Haslinger , E. Mizrachi , L. Anderegg , H. Müller , M. Hohensee , M.E. Tobar This is my paper
classification hep-phphysics.ins-det
keywords acousticwavebulkdependencedescribedlorentzmethodoscillators
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abstract

A new method of probing Lorentz invariance in the neutron sector is described. The method is baed on stable quartz bulk acoustic wave oscillators compared on a rotating table. Due to Lorentz-invariance violation, the resonance frequencies of acoustic wave resonators depend on the direction in space via a corresponding dependence of masses of the constituent elements of solids. This dependence is measured via observation of oscillator phase noise built around such devices. The first such experiment now shows sensitivity to violation down to the limit $\tilde{c}^n_Q=(-1.8\pm2.2)\times 10^{-14}$ GeV. Methods to improve the sensitivity are described together with some other applications of the technology in tests of fundamental physics.

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