{
  "annotation_id": "5c1429e8-04d8-4866-bb2a-5666c7e90932",
  "date_created": "2026-03-02T18:00:14.708000Z",
  "date_modified": "2026-03-02T18:00:14.708000Z",
  "file_hash": "8201117088950ac9cad9db249081447cbc2aac52ba0515866260e831a63a057e",
  "private": false,
  "record": {
    "abstract": "Within the Matsubara formalism we derive expressions for the pion self-energy\nand the two-pion propagator in a hot pion gas. These quantities are used to\nselfconsistently calculate the in-medium $\\pi\\pi$ amplitude beyond the\nquasiparticle approximation (QPA). The results are shown to differ\nsignificantly from QPA-based calculations. We also examine the impact of chiral\nconstraints on the $\\pi\\pi$ interaction in a chirally improved version of the\nJ\\\"ulich $\\pi\\pi$ model.",
    "arxiv_id": "nucl-th/9502023",
    "authors": [
      "R. Rapp",
      "J. Wambach"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/0370-2693(95)00361-N",
    "journal_ref": "Phys.Lett. B351 (1995) 50-55",
    "title": "Thermal Properties of a Hot Pion Gas beyond the Quasiparticle   Approximation",
    "url": "https://arxiv.org/abs/nucl-th/9502023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "15e9e96b-9fbd-47dc-8462-a7304ea93a73",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}