{
  "annotation_id": "86e06018-00cc-4b0d-a4a9-1643da420b52",
  "date_created": "2026-03-02T18:02:23.614000Z",
  "date_modified": "2026-03-02T18:02:23.614000Z",
  "file_hash": "80e24493ec8c6960acd1a76a963a40668d8ec3b92c328bdd9f9ced5b9142dbcb",
  "private": false,
  "record": {
    "abstract": "Variation principle has been developed to calculate many-particle effects in\ncrystals. Within the framework of quasi-particle concept the variation\nprinciple has been used to find one-electron states with taking into account of\neffects due to non-locality of electronic density functional in electromagnetic\nfields. A secondary quantized density matrix was used to find the Green\nfunction of a quasiparticle and changes of its effective mass due to correlated\nmotion of interacting electrons.",
    "arxiv_id": "quant-ph/0601192",
    "authors": [
      "Halina V. Grushevskaya",
      "Leonid I. Gurskii"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Variation Principle for Calculation of Many-Particle Effects in Crystals",
    "url": "https://arxiv.org/abs/quant-ph/0601192"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e6789ceb-0b22-4173-967c-9ff53a07960a",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}