{"paper":{"title":"Lifetime of the Bose Gas with Resonant Interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.quant-gas","authors_text":"A. T. Grier (LKB - Lhomond), B. S. Rem (LKB - Lhomond), C. Salomon (LKB - Lhomond), D. S. Petrov, F. Chevy (LKB - Lhomond), F. Werner (LKB - Lhomond), I. Ferrier-Barbut (LKB - Lhomond), L. Khaykovich (LKB - Lhomond), N. Navon (LKB - Lhomond), T. Langen, U. Eismann (LKB - Lhomond)","submitted_at":"2012-12-20T21:18:44Z","abstract_excerpt":"We study the lifetime of a Bose gas at and around unitarity using a Feshbach resonance in lithium~7. At unitarity, we measure the temperature dependence of the three-body decay coefficient $L_{3}$. Our data follow a $L_3 {=} \\lambda_{3} / T^{2}$ law with $\\lambda_{3} = 2.5(3)_{stat}_(6)_{sys} 10^{-20} (\\mu K)^2 cm^6 s^{-1}$ and are in good agreement with our analytical result based on the zero-range theory. Varying the scattering length $a$ at fixed temperature, we investigate the crossover between the finite-temperature unitary region and the previously studied regime where $|a|$ is smaller t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.5274","kind":"arxiv","version":3},"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"}