{"paper":{"title":"Feshbach spectroscopy and dual-species Bose-Einstein condensation of $^{23}\\mathrm{Na}-$$^{39}\\mathrm{K}$ mixtures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"Alessandro Zenesini, Eberhard Tiemann, Kai K. Voges, Matthias W. Gempel, Silke Ospelkaus, Torben A. Schulze, Torsten Hartmann","submitted_at":"2017-09-12T12:10:00Z","abstract_excerpt":"We present measurements of interspecies Feshbach resonances and subsequent creation of dual-species Bose-Einstein condensates of $^{23}\\mathrm{Na}$ and $^{39}\\mathrm{K}$. We prepare both optically trapped ensembles in the spin state $\\left|f = 1,m_{f}=-1\\right\\rangle$ and perform atom loss spectroscopy in a magnetic field range from 0 to $700 \\, \\mathrm{G}$. The observed features include several s-wave poles and a zero crossing of the interspecies scattering length as well as inelastic two-body contributions in the $\\mathcal{M} = m_{\\mathrm{Na}}+m_{\\mathrm{K}} = -2$ submanifold. We identify an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.03796","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"}