{"paper":{"title":"Measurement of ultra-low heating rates of a single antiproton in a cryogenic Penning trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"A. Mooser, C. Ospelkaus, C. Smorra, E. Wursten, J. A. Devlin, J. A. Harrington, J. Morgner, J. Walz, K. Blaum, M. Bohman, M. J. Borchert, M. Wiesinger, P. E. Blessing, S. Ulmer, T. Higuchi, W. Quint, Y. Matsuda, Y. Yamazaki","submitted_at":"2019-01-28T18:05:26Z","abstract_excerpt":"We report on the first detailed study of motional heating in a cryogenic Penning trap using a single antiproton. Employing the continuous Stern-Gerlach effect we observe cyclotron quantum transition rates of 6(1) quanta/h and an electric field noise spectral density below $7.5(3.4)\\times 10^{-20}\\,\\text{V}^{2}\\text{m}^{-2} \\text{Hz}^{-1}$, which corresponds to a scaled noise spectral density below $8.8(4.0)\\times 10^{-12}\\,\\text{V}^{2}\\text{m}^{-2}$, results which are more than two orders of magnitude smaller than those reported by other ion trap experiments."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.09860","kind":"arxiv","version":1},"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"}