{"paper":{"title":"Lambda transition and Bose-Einstein condensation in liquid ${\\rm ^4He}$","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.quant-gas"],"primary_cat":"cond-mat.other","authors_text":"Vladimir I. Kruglov","submitted_at":"2015-11-03T04:04:40Z","abstract_excerpt":"We present a theory describing the lambda transition and the Bose-Einstein condensation (BEC) in a liquid ${\\rm ^4He}$ based on the diatomic quasiparticle concept. It is shown that in liquid ${\\rm ^4He}$ for the temperature region $1~{\\rm K}\\leq{\\rm T}\\leq {\\rm T}_\\lambda$ the diatomic quasiparticles macroscopically populate the ground state which leads to BEC in liquid ${\\rm ^4He}$. The approach yields the lambda transition temperature as ${\\rm T}_\\lambda=2.16~{\\rm K}$ which is in excellent agreement with the experimental lambda temperature ${\\rm T}_\\lambda=2.17~{\\rm K}$. The concept of diato"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.00772","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"}