{"paper":{"title":"Non-Equilibrium Dynamics and Superfluid Ring Excitations in Binary Bose-Einstein Condensates","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"D. J. Frantzeskakis, D. S. Hall, J. Merrill, K. M. Mertes, P. G. Kevrekidis, R. Carretero-Gonzalez","submitted_at":"2007-07-09T19:43:59Z","abstract_excerpt":"We revisit a classic study [D. S. Hall {\\it et al.}, Phys. Rev. Lett. {\\bf 81}, 1539 (1998)] of interpenetrating Bose-Einstein condensates in the hyperfine states $\\ket{F = 1, m_f = -1}\\equiv\\ket{1}$ and $\\ket{F = 2, m_f = +1}\\equiv\\ket{2}$ of ${}^{87}$Rb and observe striking new non-equilibrium component separation dynamics in the form of oscillating ring-like structures. The process of component separation is not significantly damped, a finding that also contrasts sharply with earlier experimental work, allowing a clean first look at a collective excitation of a binary superfluid. We further"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.1205","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"}