First Search for Ultralight Dark Matter Using a Magnetically Levitated Particle
D. W. P. Amaral; Dennis G. Uitenbroek; Tjerk H. Oosterkamp; C. Tunnell · 2025 · Physical Review Letters
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Abstract
We perform the first search for ultralight dark matter using a magnetically levitated particle. A submillimeter permanent magnet is levitated in a superconducting trap with a measured force sensitivity of 0.2 fN/sqrt[Hz]. We find no evidence of a signal and derive limits on dark matter coupled to the difference between baryon and lepton number, B-L, in the mass range (1.10360-1.10485)×10^{-13} eV/c^{2}. Our most stringent limit on the coupling strength is g_{B-L}≲2.98×10^{-21}. We propose the POLONAISE (Probing Oscillations using Levitated Objects for Novel Accelerometry In Searches of Exotic
Abstract by D. W. P. Amaral; Dennis G. Uitenbroek; Tjerk H. Oosterkamp; C. Tunnell, Physical Review Letters (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1103/physrevlett.134.251001