{
  "annotation_id": "f5b24d94-7250-4863-b466-14b9fb4c060a",
  "date_created": "2026-03-02T18:01:17.751000Z",
  "date_modified": "2026-03-02T18:01:17.751000Z",
  "file_hash": "27483d8125972ef680044f0d591298cd8dc2bcfdf489b8599fbe2e6dcaed8965",
  "private": false,
  "record": {
    "abstract": "A detailed study of the low-lying electronic states\n${}^1\\Si,{}^3\\Si,{}^3\\Pi,{}^3\\De$ of the $\\rm{HeH}^+$ molecular ion in parallel\nto a magnetic field configuration (when $\\al$-particle and proton are situated\non the same magnetic line) is carried out for $B=0-4.414\\times 10^{13}$ G in\nthe Born-Oppenheimer approximation. The variational method is employed using a\nphysically adequate trial function. It is shown that the parallel configuration\nis stable with respect to small deviations for $\\Si$-states. The quantum\nnumbers of the ground state depend on the magnetic field strength. The ground\nstate evolves from the spin-singlet ${}^1\\Si$ state for small magnetic fields\n$B\\lesssim 0.5 $ a.u. to the spin-triplet ${}^3\\Si$ unbound state for\nintermediate fields and to the spin-triplet strongly bound $^3\\Pi$ state for $B\n\\gtrsim 15 $ a.u. When the $\\rm{HeH}^+$ molecular ion exists, it is stable with\nrespect to a dissociation.",
    "arxiv_id": "physics/0703090",
    "authors": [
      "A. V. Turbiner",
      "N. L. Guevara"
    ],
    "categories": [
      "physics.atom-ph"
    ],
    "doi": "10.1088/0953-4075/40/16/006",
    "title": "The $HeH^+$ molecular ion in a magnetic field",
    "url": "https://arxiv.org/abs/physics/0703090"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "77bab3ae-8371-44a3-b48f-0f6cd2f599d8",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}