{
  "annotation_id": "db274511-e62b-424d-9c15-9080482d4b3d",
  "date_created": "2026-03-02T18:00:46.873000Z",
  "date_modified": "2026-03-02T18:00:46.873000Z",
  "file_hash": "ab8ec8fbed505c65d879e4c9d610e36839059cdde478383ba34d8274a262779d",
  "private": false,
  "record": {
    "abstract": "Vibrational spectra of polyatomic molecules are often obtained from a\npolynomial expansion of the adiabatic potential around a minimum. For several\nmolecules, we show that such an approximation displays an unphysical saddle\npoint of comparatively small energy, leading to a region where the potential is\nnegative and unbounded. This poses an upper limit for a reliable evaluation of\nvibrational levels. We argue that the presence of such saddle points is\ngeneral.",
    "arxiv_id": "physics/0311016",
    "authors": [
      "Alessio Del Monte",
      "Nicola Manini",
      "Luca G. Molinari",
      "Gian Paolo Brivio"
    ],
    "categories": [
      "physics.chem-ph",
      "cond-mat"
    ],
    "doi": "10.1080/00268970412331332114",
    "journal_ref": "Molecular Physics, Vol.103, n. 5, (2005) 689-696",
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "Low-energy unphysical saddle in polynomial molecular potentials",
    "url": "https://arxiv.org/abs/physics/0311016"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8dd5f5ae-bd12-403b-85ac-82c8196cdd0b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}