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        "description": "Condensation and local equilibrium were inferred from density response and model fits, rather than directly measured long-range phase coherence or circulation. The 30–50 percent condensate fraction is an estimate, and finite-size condensation is distinct from unrestricted order in an infinite two-dimensional gas. Molecules remained lossy and occupied excited internal states; near-resonance dissociation was consistent with, rather than a proof of, universal dynamics. Exact2021 publication differences and quantitative loss-normalization issues remain unresolved.",
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      "statement": "# Density response supports a finite two-dimensional condensate of bosonic dimers\n\nZhang, Chen and colleagues associated Bose-condensed cesium atoms into weakly bound, rotationally excited Cs2 molecules in a finite two-dimensional trap. Molecular density responses to calibrated potentials agreed with thermal and high-density Bose-gas equations of state. The inferred temperature and phase-space density supported a molecular condensate in the predicted superfluid regime. Suppressed collisional loss allowed local equilibration studies and measurements of dissociation near the resonance. The 2020 preprint preceded the 2021 publication.\n\n## Scientific scope\n\nCondensation and local equilibrium were inferred from density response and model fits, rather than directly measured long-range phase coherence or circulation. The 30–50 percent condensate fraction is an estimate, and finite-size condensation is distinct from unrestricted order in an infinite two-dimensional gas. Molecules remained lossy and occupied excited internal states; near-resonance dissociation was consistent with, rather than a proof of, universal dynamics. Exact2021 publication differences and quantitative loss-normalization issues remain unresolved.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nZhendong Zhang; Liangchao Chen; Kaixuan Yao; Cheng Chin\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Atomic Bose-Einstein condensate to molecular Bose-Einstein condensate transition — original2020 preprint with complete supplementary material](https://arxiv.org/pdf/2006.15297v1)\n",
      "summary": "Zhang, Chen and colleagues associated Bose-condensed cesium atoms into weakly bound, rotationally excited Cs2 molecules in a finite two-dimensional trap. Molecular density responses to calibrated potentials agreed with thermal and high-density Bose-gas equations of state. The inferred temperature and phase-space density supported a molecular condensate in the predicted superfluid regime. Suppressed collisional loss allowed local equilibration studies and measurements of dissociation near the resonance. The 2020 preprint preceded the 2021 publication.",
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    "what_changed": "Zhang, Chen and colleagues associated Bose-condensed cesium atoms into weakly bound, rotationally excited Cs2 molecules in a finite two-dimensional trap. Molecular density responses to calibrated potentials agreed with thermal and high-density Bose-gas equations of state. The inferred temperature and phase-space density supported a molecular condensate in the predicted superfluid regime. Suppressed collisional loss allowed local equilibration studies and measurements of dissociation near the resonance. The 2020 preprint preceded the 2021 publication.",
    "scope": "Zhang, Chen and colleagues associated Bose-condensed cesium atoms into weakly bound, rotationally excited Cs2 molecules in a finite two-dimensional trap. Molecular density responses to calibrated potentials agreed with thermal and high-density Bose-gas equations of state. The inferred temperature and phase-space density supported a molecular condensate in the predicted superfluid regime. Suppressed collisional loss allowed local equilibration studies and measurements of dissociation near the resonance. The 2020 preprint preceded the 2021 publication. Condensation and local equilibrium were inferred from density response and model fits, rather than directly measured long-range phase coherence or circulation. The 30–50 percent condensate fraction is an estimate, and finite-size condensation is distinct from unrestricted order in an infinite two-dimensional gas. Molecules remained lossy and occupied excited internal states; near-resonance dissociation was consistent with, rather than a proof of, universal dynamics. Exact2021 publication differences and quantitative loss-normalization issues remain unresolved.",
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