{
  "annotation_id": "5c9ccb59-057b-468b-9565-0a85add4469a",
  "date_created": "2026-03-02T18:00:08.654000Z",
  "date_modified": "2026-03-02T18:00:08.654000Z",
  "file_hash": "e58e9761926e5d9aa7c259bfe5a39233e0b0e0d8545f022724fee05fef034419",
  "private": false,
  "record": {
    "abstract": "In astrophysics as well as in hadron physics progress has recently been made\non the determination of the hadronic equation of state (EOS) of compressed\nmatter. The results are contradictory, however. Simulations of heavy ion\nreactions are now sufficiently robust to predict the stiffness of the (EOS)\nfrom (i) the energy dependence of the ratio of $K^+$ from Au+Au and C+C\ncollisions and (ii) the centrality dependence of the $K^+$ multiplicities. The\ndata are best described with a compressibility coefficient at normal nuclear\nmatter density $\\kappa$ around 200 MeV, a value which is usually called\n``soft\u0027\u0027 The recent observation of a neutron star with a mass of twice the\nsolar mass is only compatible with theoretical predictions if the EOS is stiff.\nWe review the present situation.",
    "arxiv_id": "nucl-th/0610005",
    "authors": [
      "Ch. Hartnack",
      "H. Oeschler",
      "J\u00f6rg Aichelin"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1088/0954-3899/32/12/S29",
    "journal_ref": "J.Phys. G32 (2006) S231-240",
    "title": "Recent astrophysical and accelerator based results on the Hadronic   Equation of State",
    "url": "https://arxiv.org/abs/nucl-th/0610005"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "935d0cac-f00c-4e06-a986-62f335218c03",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}