{
  "annotation_id": "c99ede28-e6b5-4a2e-8b4d-aa2b40ac45bd",
  "date_created": "2026-03-02T18:00:18.954000Z",
  "date_modified": "2026-03-02T18:00:18.954000Z",
  "file_hash": "3e93f790a6e53e4c7951d9d6dc3a5ca9736b25851d32cd6df7ab24b49aaecc58",
  "private": false,
  "record": {
    "abstract": "We discuss the early evolution of ultrarelativistic heavy-ion collisions\nwithin a multi-fluid dynamical model. In particular, we show that due to the\nfinite mean-free path of the particles compression shock waves are smeared out\nconsiderably as compared to the one-fluid limit. Also, the maximal energy\ndensity of the baryons is much lower. We discuss the time scale of kinetic\nequilibration of the baryons in the central region and its relevance for\ndirected flow. Finally, thermal emission of direct photons from the fluid of\nproduced particles is calculated within the three-fluid model and two other\nsimple expansion models. It is shown that the transverse momentum and rapidity\nspectra of photons give clue to the cooling law and the early rapidity\ndistribution of the photon source.",
    "arxiv_id": "nucl-th/9705056",
    "authors": [
      "A. Dumitru",
      "J. Brachmann",
      "M. Bleicher",
      "J. A. Maruhn",
      "H. Stoecker",
      "W. Greiner"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1007/BF03156111",
    "journal_ref": "Heavy Ion Physics 5 (1997) 357",
    "title": "Probes for the early reaction dynamics of heavy-ion collisions at AGS   and SPS",
    "url": "https://arxiv.org/abs/nucl-th/9705056"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "a8b19500-6d15-4afb-bc12-52c4794c0f6f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}