{
  "annotation_id": "b827779e-9515-4b45-a1c6-6ff4303f267b",
  "date_created": "2026-03-02T18:00:00.838000Z",
  "date_modified": "2026-03-02T18:00:00.838000Z",
  "file_hash": "3dec719343f1cc08554e323bd07b6d8d68d5ab8d5d0ad28ecfa07bd6013e7f3d",
  "private": false,
  "record": {
    "abstract": "We investigate the density behaviour of the symmetry energy with respect to\nisospin equilibration in the combined systems $Ru(Zr)+Zr(Ru)$ at relativistic\nenergies of 0.4 and $1.528 AGeV$. The study is performed within a relativistic\nframework and the contribution of the iso-vector, scalar $\\delta$ field to the\nsymmetry energy and the isospin dynamics is particularly explored. We find that\nthe isospin mixing depends on the symmetry energy and a stiff behaviour leads\nto more transparency. The results are also nicely sensitive to the \"fine\nstructure\" of the symmetry energy, i.e. to the covariant properties of the\nisovector meson fields. The isospin tracing appears much less dependent on the\nin-medium neutron-proton cross-sections ($\\sigma_{np}$) and this makes such\nobservable very peculiar for the study of the isovector part of the nuclear\nequation of state. Within such a framework, comparisons with experiments\nsupport the introduction of the $\\delta$ meson in the description of the\niso-vector equation of state.",
    "arxiv_id": "nucl-th/0403005",
    "authors": [
      "T. Gaitanos",
      "M. Colonna",
      "M. Di Toro",
      "H. H. Wolter"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.physletb.2004.05.080",
    "journal_ref": "Phys.Lett. B595 (2004) 209-215",
    "title": "Stopping and Isospin Equilibration in Heavy Ion Collisions",
    "url": "https://arxiv.org/abs/nucl-th/0403005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dd6f643b-3961-4368-9548-84188fc9e27c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}