Test of the Equivalence Principle for Superconductors

M. P. Ross,S. M. Fleischer, I. A. Paulson, P. Lamb,B. M. Iritani, E. G. Adelberger, C. A. Hagedorn, K. Venkateswara,C. Gettings, E. A. Shaw, S. K. Apple,J. H. Gundlach

arxiv（2024）

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摘要

We searched for violations of the weak equivalence principle using a cryogenic torsion balance with a pendulum comprised of superconducting niobium and copper. We constrain the Eötvös parameter with 95%-confidence to η_Nb*-Cu ≤ 2.0×10^-9 and η_CP-ee≤6.9×10^-3 for superconducting niobium and Cooper pairs, respectively.

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