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        "description": "The measurement resolves the tube bundle, with central-tube properties inferred through symmetry assumptions, inverse Abel analysis and a model-supported relation between the bundle and central radii. Temperature and theoretical phase boundaries rely on a quasi-one-dimensional model with confinement corrections. Density agreement does not directly measure finite-momentum pairs, an oscillating order parameter, superfluid coherence or FFLO correlations; the authors explicitly leave such observations for later work.",
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      "statement": "# Spin-dependent phase separation in a one-dimensional Fermi gas\n\nLiao, Rittner and colleagues measured spin-resolved density profiles of an attractively interacting lithium-6 gas confined to an array of narrow tubes. Unlike the paired central region familiar from three-dimensional experiments, their partially polarized core was surrounded by paired or fully polarized wings as the spin imbalance changed. The measured radii mapped a phase-separation diagram and were compared with finite-temperature thermodynamic Bethe-ansatz calculations. The experiment supplied a controlled setting in which theories predict one-dimensional FFLO-like pairing correlations.\n\n## Scientific scope\n\nThe measurement resolves the tube bundle, with central-tube properties inferred through symmetry assumptions, inverse Abel analysis and a model-supported relation between the bundle and central radii. Temperature and theoretical phase boundaries rely on a quasi-one-dimensional model with confinement corrections. Density agreement does not directly measure finite-momentum pairs, an oscillating order parameter, superfluid coherence or FFLO correlations; the authors explicitly leave such observations for later work.\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\nYean-an Liao; Ann Sophie C. Rittner; Tobias Paprotta; Wenhui Li; Guthrie B. Partridge; Randall G. Hulet; Stefan K. Baur; Erich J. Mueller\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- [Spin-imbalance in a one-dimensional Fermi gas (arXiv0912.0092v2)](https://arxiv.org/pdf/0912.0092v2)\n",
      "summary": "Liao, Rittner and colleagues measured spin-resolved density profiles of an attractively interacting lithium-6 gas confined to an array of narrow tubes. Unlike the paired central region familiar from three-dimensional experiments, their partially polarized core was surrounded by paired or fully polarized wings as the spin imbalance changed. The measured radii mapped a phase-separation diagram and were compared with finite-temperature thermodynamic Bethe-ansatz calculations. The experiment supplied a controlled setting in which theories predict one-dimensional FFLO-like pairing correlations.",
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    "what_changed": "Liao, Rittner and colleagues measured spin-resolved density profiles of an attractively interacting lithium-6 gas confined to an array of narrow tubes. Unlike the paired central region familiar from three-dimensional experiments, their partially polarized core was surrounded by paired or fully polarized wings as the spin imbalance changed. The measured radii mapped a phase-separation diagram and were compared with finite-temperature thermodynamic Bethe-ansatz calculations. The experiment supplied a controlled setting in which theories predict one-dimensional FFLO-like pairing correlations.",
    "scope": "Liao, Rittner and colleagues measured spin-resolved density profiles of an attractively interacting lithium-6 gas confined to an array of narrow tubes. Unlike the paired central region familiar from three-dimensional experiments, their partially polarized core was surrounded by paired or fully polarized wings as the spin imbalance changed. The measured radii mapped a phase-separation diagram and were compared with finite-temperature thermodynamic Bethe-ansatz calculations. The experiment supplied a controlled setting in which theories predict one-dimensional FFLO-like pairing correlations. The measurement resolves the tube bundle, with central-tube properties inferred through symmetry assumptions, inverse Abel analysis and a model-supported relation between the bundle and central radii. Temperature and theoretical phase boundaries rely on a quasi-one-dimensional model with confinement corrections. Density agreement does not directly measure finite-momentum pairs, an oscillating order parameter, superfluid coherence or FFLO correlations; the authors explicitly leave such observations for later work.",
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