{
  "annotation_id": "e381adfc-90d1-444b-86ac-358d2a7fc319",
  "date_created": "2026-03-02T18:01:31.610000Z",
  "date_modified": "2026-03-02T18:01:31.610000Z",
  "file_hash": "424f7d160c57bb8f9dbd1e12fb7f67de18428c248c39b7c16ffcca2e6616de8f",
  "private": false,
  "record": {
    "abstract": "We extend our study of a simple model of biological coevolution to its\nstatistical properties. Staring with a complete description in terms of a\nmaster equation, we provide its relation to the deterministic evolution\nequations used in previous investigations. The stationary states of the\nmutationless model are generally well approximated by Gaussian distributions,\nso that the fluctuations and correlations of the populations can be computed\nanalytically. Several specific cases are studied by Monte Carlo simulations,\nand there is excellent agreement between the data and the theoretical\npredictions.",
    "arxiv_id": "q-bio/0401008",
    "authors": [
      "R. K. P. Zia",
      "Per Arne Rikvold"
    ],
    "categories": [
      "q-bio.PE",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1088/0305-4470/37/19/003",
    "journal_ref": "J. Phys. A: Mathematical and General 37, 5135 - 5155 (2004).",
    "title": "Fluctuations and correlations in an individual-based model of biological   coevolution",
    "url": "https://arxiv.org/abs/q-bio/0401008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6389a372-33b7-460b-8fb0-125474a5667f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}