{"paper":{"title":"Bose-Einstein Condensation in liquid $^4$He near the liquid-solid transition line","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"cond-mat.stat-mech","authors_text":"D. L. Abernathy, H. R. Glyde, J. Boronat, R. Rota, R. T. Azuah, S. O. Diallo","submitted_at":"2011-11-09T17:32:08Z","abstract_excerpt":"We present precision neutron scattering measurements of the Bose-Einstein condensate fraction, n0(T), and the atomic momentum distribution, n\\star(k), of liquid 4He at pressure p =24 bar. Both the temperature dependence of n0(T) and of the width of n\\star(k) are determined. The n0(T) can be represented by n0(T) = n0(0)[1-(T/T{\\lambda}){\\gamma}] with a small n0(0) = 2.80\\pm0.20% and large {\\gamma} = 13\\pm2 for T < T{\\lambda} indicating strong interaction. The onset of BEC is accompanied by a significant narrowing of the n\\star(k). The narrowing accounts for 65% of the drop in kinetic energy bel"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.2284","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"}