{
  "annotation_id": "711e9015-2bbf-4055-967a-897387dad1c8",
  "date_created": "2026-03-02T18:01:24.519000Z",
  "date_modified": "2026-03-02T18:01:24.519000Z",
  "file_hash": "e4a767a169b3ca38e030bf736fe13768b49790253d3a46b3355f5e22c014a83e",
  "private": false,
  "record": {
    "abstract": "The two-particle problem within a nonequilibrium many-particle system is\ninvestigated in the framework of real-time Green\u0027s functions. Starting from the\ndynamically screened ladder approximation of the nonequlibrium Bethe-Salpeter\nequation, a nonequilibrium Dyson equation is given for two-time two-particle\nGreen\u0027s functions. Thereby the well-known Kadanoff-Baym equations are\ngeneralized to the case of two-particle functions. The two-time structure of\nthe equations is achieved in an exact way avoiding the so-called Shindo\napproximation. For the case of thermodynamic equilibrium, the differences to\nformer results obtained for the effective two-particle hamiltonian are\ndiscussed.",
    "arxiv_id": "physics/9903039",
    "authors": [
      "Th. Bornath",
      "D. Kremp",
      "M. Schlanges"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "The two-particle problem in a many-particle system: I. Dynamically   screened ladder approximation",
    "url": "https://arxiv.org/abs/physics/9903039"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "4f85eaef-fd9b-4f81-9d04-d6286cda3b3d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}