Constraints on Exotic Dipole-Dipole Couplings between Electrons at the Micrometer Scale

Published

August 17, 2015

Author(s)

Shlomi Salman Kotler, R. Ozeri, Derek F. Kimball

Abstract

New constraints on exotic dipole-dipole interactions between electrons at the micrometer scale are established, based on a recent measurement of the magnetic interaction between two trapped 88Sr+ ions. For light bosons (mass ≤ 0.1 eV) we obtain 90% confidence intervals on pseudo-scalar and axial-vector mediated interaction strengths of |gPe gPe /4π􏰀c| ≤ 1.5 × 10−3 and |gAe 4π􏰀c| ≤ 1.2 × 10−17, respectively. These bounds significantly improve on previous work for this mass range. Assuming CPT invariance, these constraints are compared to those on anomalous electron-positron interactions, derived from positronium hyperfine spectroscopy. For axial-vector mediated interac- tion the electron-electron constraints are six orders of magnitude more stringent than the electron- positron constraints. Bounds on torsion gravity are also derived and compared with previous work performed at different length scales.

Citation

Physical Review Letters

Volume

115

Issue

8

Pub Type

Journals

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DOI Link

Citation

, S. , Ozeri, R. and Kimball, D. (2015), Constraints on Exotic Dipole-Dipole Couplings between Electrons at the Micrometer Scale, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.115.081801 (Accessed October 25, 2025)