{
  "annotation_id": "54eb28fa-9f91-40e1-92af-d7d0a6e9a747",
  "date_created": "2026-03-02T18:00:29.429000Z",
  "date_modified": "2026-03-02T18:00:29.429000Z",
  "file_hash": "1df92aca8b23d02aaf51483a21fb9c26e1754db40e9a61c0bd7c465010f8c9e9",
  "private": false,
  "record": {
    "abstract": "The electronic structure of C_(4N+2) carbon rings exhibits competing\nmany-body effects of Huckel aromaticity, second-order Jahn-Teller and Peierls\ninstability at large sizes. This leads to possible ground state structures with\naromatic, bond angle or bond length alternated geometry. Highly accurate\nquantum Monte Carlo results indicate the existence of a crossover between C_10\nand C_14 from bond angle to bond length alternation. The aromatic isomer is\nalways a transition state. The driving mechanism is the second-order\nJahn-Teller effect which keeps the gap open at all sizes.",
    "arxiv_id": "physics/0003042",
    "authors": [
      "Tommaso Torelli",
      "Lubos Mitas"
    ],
    "categories": [
      "physics.atm-clus",
      "physics.comp-ph"
    ],
    "doi": "10.1103/PhysRevLett.85.1702",
    "journal_ref": "Phys. Rev. Lett. v.85, p. 1702 (2000)",
    "title": "Electron correlation in C_(4N+2) carbon rings: aromatic vs. dimerized   structures",
    "url": "https://arxiv.org/abs/physics/0003042"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bc35ba27-8788-43d5-90d2-b58d80ce0f6c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}