Enhanced sensitivity to Lorentz invariance violations in short-range gravity experiments

C.G. Shao, Y.F. Chen, Y.J. Tan, J. Luo, S.Q. Yang, Michael E. Tobar

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)


    © 2016 American Physical Society.Recently, first limits on putative Lorentz invariance violation coefficients in the pure gravity sector were determined by the reanalysis of short-range gravity experiments. Such experiments search for new physics at sidereal frequencies. They are not, however, designed to optimize the signal strength of a Lorentz invariance violation force; in fact the Lorentz violating signal is suppressed in the planar test mass geometry employed in those experiments. We describe a short-range torsion pendulum experiment with enhanced sensitivity to possible Lorentz violating signals. A periodic, striped test mass geometry is used to augment the signal. Careful arrangement of the phases of the striped patterns on opposite ends of the pendulum further enhances the signal while simultaneously suppressing the Newtonian background.
    Original languageEnglish
    Article number104061
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Issue number10
    Publication statusPublished - 2016


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