{
  "annotation_id": "61bf4930-7e5a-472d-b1f0-f1503db86c20",
  "date_created": "2026-03-02T18:01:25.024000Z",
  "date_modified": "2026-03-02T18:01:25.024000Z",
  "file_hash": "e532e893e2aaf4a7f770ad6d7c4999ccb28a3d945e07be42150523edaea007ed",
  "private": false,
  "record": {
    "abstract": "The dynamic sructure factor as the basic quantity describing the collective\nexcitations in a fluid is considered. We consider the cases of neutral and\nCoulombic fluids. The classical method of moments is applied to construct the\ndynamic structure factor satisfying all known sum rules. An interpolational\nformula is found which expresses the dynamic characteristics of a classical or\nquantum fluid system in terms of its static correlation parameters. The\nanalytical results based on the theory of moments are compared with Molecular\ndynamics data for various model systems.",
    "arxiv_id": "physics/9912041",
    "authors": [
      "J. Ortner"
    ],
    "categories": [
      "physics.plasm-ph",
      "physics.flu-dyn"
    ],
    "doi": "10.1238/Physica.Topical.084a00069",
    "title": "Dynamic structure factor and collective excitations of neutral and   Coulomb fluids",
    "url": "https://arxiv.org/abs/physics/9912041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b943f4ca-bcab-46e2-bf1d-5b1795c4e985",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}