{
  "annotation_id": "f004ddbe-e202-4af3-a740-546f9a02e55c",
  "date_created": "2026-03-02T18:00:18.842000Z",
  "date_modified": "2026-03-02T18:00:18.842000Z",
  "file_hash": "5e9e15b8aff179ce0f22f92c31ff9d713947ae937d582b8181da7e7998388a7f",
  "private": false,
  "record": {
    "abstract": "Pionic excitations are analyzed in isospin-asymmetric Fermi gas of\nconstituent quarks. It is found that in addition to the usual pionic\nexcitations, there exists a very low collective mode with quantum numbers of\nthe charged pion (spin-isospin sound). In the chiral limit the excitation\nenergy of one of the modes scales as the current quark mass, and the mode\nsaturates current-algebraic sum rules. This is in agreement with predictions of\ncurrent algebra for isospin-asymmetric medium.",
    "arxiv_id": "nucl-th/9609053",
    "authors": [
      "Wojciech Broniowski",
      "Brigitte Hiller"
    ],
    "categories": [
      "nucl-th",
      "hep-ph"
    ],
    "doi": "10.1016/S0370-2693(96)01551-1",
    "journal_ref": "Phys.Lett. B392 (1997) 267-272",
    "title": "Current algebra and soft pionic modes in asymmetric quark matter",
    "url": "https://arxiv.org/abs/nucl-th/9609053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "65bc1463-6460-44b6-bb69-c7fbb203ab46",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}