Probing For Non-Gravitational Long-Range Dark Matter Interactions
General Relativity and Quantum Cosmology
2026-02-19 v3 High Energy Physics - Experiment
High Energy Physics - Phenomenology
Abstract
Dark matter remains a mystery in fundamental physics. The only evidence for dark matter's existence is from gravitational interactions. We constructed a precision torsion balance experiment to search for non-gravitational, long-range interactions between ordinary matter in our lab and the Milky Way's dark matter. We find no evidence of such interaction and set strict upper bounds on its strength. These results suggest that dark matter only interacts gravitationally over long distances and constrains a variety of dark matter theories.
Keywords
Cite
@article{arxiv.2509.10701,
title = {Probing For Non-Gravitational Long-Range Dark Matter Interactions},
author = {M. P. Ross and S. K. Apple and E. A. Shaw and C. Gettings and I. A. Paulson and J. H. Gundlach},
journal= {arXiv preprint arXiv:2509.10701},
year = {2026}
}