{"paper":{"title":"Test of special relativity using a fiber network of optical clocks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.class-ph"],"primary_cat":"gr-qc","authors_text":"A. Al-Masoudi, A. Amy-Klein, A. Kuhl, A. Rolland, C. Grebing, C. Guerlin, C. Le Poncin-Lafitte, C. Lisdat, E. Bookjans, F. Meynadier, F. N. Baynes, G. Grosche, G. Marra, G. Vallet, H. S. Margolis, I. R. Hill, J. Kronj\\\"ager, J. Lodewyck, N. Quintin, O. Lopez, P. Delva, P.-E. Pottie, P. Gill, R. Hobson, R. Le Targat, S. Bilicki, S. D\\\"orscher, S. Raupach, U. Sterr, W. Bowden, W.-K. Lee","submitted_at":"2017-03-13T14:54:02Z","abstract_excerpt":"Phase compensated optical fiber links enable high accuracy atomic clocks separated by thousands of kilometers to be compared with unprecedented statistical resolution. By searching for a daily variation of the frequency difference between four strontium optical lattice clocks in different locations throughout Europe connected by such links, we improve upon previous tests of time dilation predicted by special relativity. We obtain a constraint on the Robertson--Mansouri--Sexl parameter $|\\alpha|\\lesssim 1.1 \\times10^{-8}$ quantifying a violation of time dilation, thus improving by a factor of a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.04426","kind":"arxiv","version":2},"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"}