{
  "annotation_id": "88bf611b-8ff6-440f-b331-cfc2e7373f14",
  "date_created": "2026-03-02T18:00:18.476000Z",
  "date_modified": "2026-03-02T18:00:18.476000Z",
  "file_hash": "109f81c1120f378791cad09b5c64dd1deb511f7c2a77cd08ec69c19b42af0f19",
  "private": false,
  "record": {
    "abstract": "We investigate the properties of different modifications to the linear\n$\\sigma$-model (including a dilaton field associated with broken scale\ninvariance) at finite baryon density $\\rho$ and nonzero temperature $T$. The\nexplicit breaking of chiral symmetry and the way the vector meson mass is\ngenerated are significant for the appearance of a phase of nearly vanishing\nnucleon mass besides the solution describing normal nuclear matter. The\nelimination of the abnormal solution prohibits the onset of a chiral phase\ntransition but allows to lower the compressibility to a reasonable range. The\nrepulsive contributions from the vector mesons are responsible for the wide\nrange of stability of the normal phase in the $(\\mu,T)$-plane. The abnormal\nsolution becomes not only energetically preferable to the normal state at high\ntemperature or density, but also mechanically stable due to the inclusion of\ndilatons.",
    "arxiv_id": "nucl-th/9609035",
    "authors": [
      "P. Papazoglou",
      "J. Schaffner",
      "S. Schramm",
      "D. Zschiesche",
      "H. St\u00f6cker",
      "W. Greiner"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.55.1499",
    "journal_ref": "Phys.Rev.C55:1499-1508,1997",
    "title": "Phase Transition in the chiral $\\sigma$-$\\omega$ model with dilatons",
    "url": "https://arxiv.org/abs/nucl-th/9609035"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c3f67e6b-f4a0-404c-8c51-f3754f3070df",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}