{
  "model": "HEG3D",
  "lattice": "fcc",
  "n_sites": 178,
  "boundary": "P",
  "params": {
    "N_up": 89,
    "N_dn": 89,
    "rs": 2,
    "twist": "Gamma"
  },
  "instance_id": "HEG3D/fcc_178_P_89_89_2",
  "rows": [
    {
      "energy": 1.58776,
      "sigma": 0.00356,
      "energy_variance": null,
      "dof": 178,
      "einf": null,
      "v_score": null,
      "method": "Fixed-node DMC",
      "method_detail": "Slater-Jastrow wave function, Ewald interaction; DMC time step 0.003 a.u., target population 800, expansion orders Nu=Neta=8",
      "method_as_published": "SJ-DMC [Slater-Jastrow wave function, Ewald interaction; DMC time step 0.003 a.u., target population 800, expansion orders Nu=Neta=8] (arXiv:1001.5002)",
      "family": "DMC",
      "bound_type": "projected",
      "bound_type_reason": "projection (GFMC/fixed-node) on a trial state; not a strict variational bound (assigned during source reading)",
      "reference": "I G Gurtubay, R Gaudoin and J M Pitarke, Benchmark Quantum Monte Carlo calculations of the ground-state kinetic, interaction, and total energy of the three-dimensional electron gas, J. Phys.: Condens. Matter 22, arXiv:1001.5002, doi:10.1088/0953-8984/22/6/065501",
      "peer_reviewed": true,
      "source": "sweep-allresults-2026-10-19",
      "provenance": "primary",
      "verified": {
        "checked_on": "2026-10-19",
        "method": "source text of arXiv:1001.5002 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": "0.00892(2)",
        "note": "Table 1, N=178, column 'SJ DMC Ewald'; sources/1001.5002.txt line 275; printed in Ha per electron; version read: arXiv text in sources/; journal copy not read | No Hartree-Fock energy is printed. The text states the interaction used: 'Coulomb finite-size effects were reduced by using the MPC scheme, where the Hartree energy is calculated with the Ewald interaction while the xc energy is calculated using 1/r within the minimum image convention' (txt lines 234-238). The MPC columns are therefore NOT the Ewald Hamiltonian of RULES 12.2. The 'Ewald' column of Table 1 (SJ-DMC) is the usual Ewald interaction (txt line 264 and text lines 'using the usual 1/r Ewald interaction'). The Madelung term is not mentioned. Indirect check with QMBL hf.mjs (3 fcc N/2 N",
        "secondary_of": null
      }
    }
  ],
  "url": "https://qmbl.org/i/HEG3D/fcc_178_P_89_89_2/",
  "per_site_divisor": 178,
  "per_site_label": "E/N (Ha)",
  "record": {
    "energy": 1.58776,
    "sigma": 0.00356,
    "method": "Fixed-node DMC",
    "method_detail": "Slater-Jastrow wave function, Ewald interaction; DMC time step 0.003 a.u., target population 800, expansion orders Nu=Neta=8",
    "reference": "I G Gurtubay, R Gaudoin and J M Pitarke, Benchmark Quantum Monte Carlo calculations of the ground-state kinetic, interaction, and total energy of the three-dimensional electron gas, J. Phys.: Condens. Matter 22, arXiv:1001.5002, doi:10.1088/0953-8984/22/6/065501",
    "bound_type": "projected",
    "energy_per_site": 0.00892
  },
  "no_record_reason": null
}