{"paper":{"title":"Test of Einstein's Equivalence Principle by Galactic Dark Matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Adam Archibald, Dawson Huth, Kasey Wagoner, Maneesh Jeyakumar, Michael Abercrombie, Nadathur Krishnan, Ramanath Cowsik, Tsitsi Madziwa-Nussinov","submitted_at":"2018-08-29T16:55:20Z","abstract_excerpt":"We report here the results of operation of a torsion balance with a period of $\\sim 1.27 \\times 10^4$ s. The analysis of data collected over a period of $\\sim$115 days shows that the difference in the accelerations towards the Galactic Center of test bodies made of aluminum and quartz was $(0.61 \\pm 1.27) \\times 10^{-15} \\, \\mathrm{ m \\, s}^{-2}$. This sets a bound on the violation of the equivalence principle by forces exerted by Galactic dark matter which is expressed by the E\\\"otv\\\"os parameter $\\eta_{DM} = (1.32 \\pm 2.68) \\times 10^{-5}$, a significant improvement upon earlier bounds."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09925","kind":"arxiv","version":6},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}