{
  "model": "HEG3D",
  "lattice": "sc",
  "n_sites": 38,
  "boundary": "P",
  "params": {
    "N_up": 19,
    "N_dn": 19,
    "rs": 0.5,
    "twist": "Gamma"
  },
  "instance_id": "HEG3D/sc_38_P_19_19_0.5",
  "rows": [
    {
      "energy": 121.862739634,
      "sigma": 0.000988,
      "energy_variance": null,
      "dof": 38,
      "einf": null,
      "v_score": null,
      "method": "FCIQMC",
      "method_detail": "initiator (n_add = 3), run at 922 spin orbitals; extrapolated: 1/M → 0 (complete basis)",
      "method_as_published": "i-FCIQMC, single-point basis-limit estimate (run at M = 922)",
      "family": "FCIQMC / CC",
      "bound_type": "extrapolated",
      "bound_type_reason": "zero-variance or bond-dimension extrapolation; not an upper bound (assigned during source reading)",
      "reference": "J. J. Shepherd, G. H. Booth & A. Alavi, Investigation of the full configuration interaction quantum Monte Carlo method using homogeneous electron gas models, J. Chem. Phys. 136, 244101 (2012), arXiv:1201.4691, doi:10.1063/1.4720076",
      "peer_reviewed": true,
      "source": "sweep-allresults-2026-10-19",
      "provenance": "primary",
      "verified": {
        "checked_on": "2026-10-19",
        "method": "source text of arXiv:1201.4691 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; single reading",
        "reported_as": "E_c = -1.849(1) (total, Ha)",
        "note": "Table II, rs=0.5, N=38, column Ecorr (a.u.); sources/1201.4691.txt line 20999; printed correlation energy -1.849(1) Ha for 38 electrons; E = E_HF + E_c with E_HF = 3.25557209564 Ha per electron (QMBL, checks/heg-hf/hf.mjs); version read: arXiv text, Tables I and II; AIP copy not read | Correlation energy E_c = E - E_HF, total for the cell, Hartree; 14, 38 or 54 electrons in a simple cubic cell at the Gamma point, a closed shell, so E_HF is the unique plane-wave determinant's. Stored E = E_HF + E_c with E_HF from QMBL (checks/heg-hf/hf.mjs; RULES.md 12.3, 2026-10-19).",
        "secondary_of": null
      }
    }
  ],
  "url": "https://qmbl.org/i/HEG3D/sc_38_P_19_19_0.5/",
  "per_site_divisor": 38,
  "per_site_label": "E/N (Ha)",
  "record": {
    "energy": 121.862739634,
    "sigma": 0.000988,
    "method": "FCIQMC",
    "method_detail": "initiator (n_add = 3), run at 922 spin orbitals; extrapolated: 1/M → 0 (complete basis)",
    "reference": "J. J. Shepherd, G. H. Booth & A. Alavi, Investigation of the full configuration interaction quantum Monte Carlo method using homogeneous electron gas models, J. Chem. Phys. 136, 244101 (2012), arXiv:1201.4691, doi:10.1063/1.4720076",
    "bound_type": "extrapolated",
    "energy_per_site": 3.2069142008947367
  },
  "no_record_reason": null
}