{
  "annotation_id": "73d918a7-a6ef-405f-ad61-18a6834fc0ae",
  "date_created": "2026-03-02T18:00:08.641000Z",
  "date_modified": "2026-03-02T18:00:08.641000Z",
  "file_hash": "6b9020f3d8515f78c67c23cc0545d50691e6df4d084e2060bb7b52d7c1cfaa45",
  "private": false,
  "record": {
    "abstract": "Thermodynamic properties of a fermionic system close to the unitarity limit,\nwhere the 2-body scattering length |a| approaches infinity is studied at high\ntemperature Boltzmann regime. For dilute systems the virial expansion\ncoefficients in the Boltzmann regime are expected, from general arguments, to\nbe universal. A model independent finite temperature T calculation of the third\nvirial coefficient b3(T) is presented. At the unitarity limit, b3(T) = -0.48 is\nan universal number. The energy density up to the third virial expansion is\nderived. These results are relevant for dilute neutron matter and could be\ntested in current atomic experiments on dilute fermionic gases near the\nFeshbach resonance.",
    "arxiv_id": "nucl-th/0604053",
    "authors": [
      "Gautam Rupak"
    ],
    "categories": [
      "nucl-th",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1103/PhysRevLett.98.090403",
    "journal_ref": "Phys.Rev.Lett.98:090403,2007",
    "title": "Universality in a 2-component Fermi System at Finite Temperature",
    "url": "https://arxiv.org/abs/nucl-th/0604053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bc362e62-e95f-4b9c-bca9-0abac6b8f62b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}