{
  "model": "Hchain",
  "lattice": "chain",
  "n_sites": 10,
  "boundary": "O",
  "params": {
    "N_up": 5,
    "N_dn": 5,
    "R": 1.51178,
    "basis": "STO-3G"
  },
  "instance_id": "Hchain/chain_10_O_R1.51178_sto3g",
  "rows": [
    {
      "energy": -5.28221,
      "sigma": null,
      "energy_variance": null,
      "dof": 10,
      "einf": null,
      "v_score": null,
      "method": "VQE",
      "ansatz": null,
      "method_detail": "UCCSD ansatz, TenCirChem",
      "method_as_published": "UCCSD (TenCirChem)",
      "family": "VQE / circuit",
      "bound_type": "variational",
      "bound_type_reason": "UCCSD unitary ansatz, energy is an expectation value (not in RULES list; text says error vs FCI, reducible with more excitations)",
      "reference": "Weitang Li, Jonathan Allcock, Lixue Cheng et al., TenCirChem: An Efficient Quantum Computational Chemistry Package for the NISQ Era, Journal of Chemical Theory and Computation 19, 3966-3981 (2023), arXiv:2303.10825, doi:10.1021/acs.jctc.3c00319",
      "peer_reviewed": true,
      "source": "track3-2026-10-20",
      "provenance": "primary",
      "verified": {
        "checked_on": "2026-10-20",
        "method": "source text of arXiv:2303.10825 read locally (pypdf layout text; the generator finds every value again on its line), no LLM transcription of numbers; single reading (Sonnet reader)",
        "reported_as": "-5,282.21 mHa per total; R = 0.8 Å = 1.51178 bohr",
        "note": "Table 1; sources/2303.10825.txt line 659; version read: arXiv text; journal copy not reached (publisher returned HTTP 403 or a login page, 2026-10-21); read again when reachable (RULES.md §8) | Table 1 header line 650 'Energy Error (mH) (mH)'; line 636-637 'STO-3G ... interatomic distance set to 0.8 Å'; thousands separator comma: -2,167.55 mH = -2.16755 Ha | Unit mH printed in header only; inferred from magnitude and header. Boundary not stated, open assumed. Nuclear repulsion not stated. Table also prints error vs FCI in mH (would imply FCI = energy - error, not printed itself). | reader confidence medium",
        "secondary_of": null
      },
      "artifacts": {
        "code": "https://github.com/tencent-quantum-lab/TenCirChem",
        "read_from": {
          "quote": "The source code is hosted on the GitHub repository https://github. com/tencent-quantum-lab/TenCirChem.",
          "location": "2.5 Installing and contributing to TenCirChem (sources/2303.10825.txt, lines 474-475)",
          "checked_on": "2026-10-22",
          "pass": "passes/track3/code-links-2026-10-22-hydrogen.json"
        }
      },
      "sampled": false,
      "corrections": [
        {
          "field": "sampled",
          "to": false,
          "reported_as": "-5,282.21 mHa per total; R = 0.8 Å = 1.51178 bohr",
          "location": "Table 1; sources/2303.10825.txt line 659; version read: arXiv text; journal copy not reached (publisher returned HTTP 403 or a login page, 2026-10-21); read again when reachable (RULES.md §8)",
          "checked_on": "2026-10-20",
          "reason": "Deterministic, not a Monte Carlo estimate, as the track-3 reader recorded it (pass row `sampled`); the method string alone reads the other way (units.mjs, isSampled).",
          "source_entry": "passes/track3/sweep-rows-2026-10-20-hydrogen.json"
        }
      ]
    }
  ],
  "url": "https://qmbl.org/i/Hchain/chain_10_O_R1.51178_sto3g/",
  "per_site_divisor": 10,
  "per_site_label": "E/N (Ha)",
  "best": {
    "exact": null,
    "variational": {
      "energy": -5.28221,
      "sigma": null,
      "method": "VQE",
      "ansatz": null,
      "method_detail": "UCCSD ansatz, TenCirChem",
      "reference": "Weitang Li, Jonathan Allcock, Lixue Cheng et al., TenCirChem: An Efficient Quantum Computational Chemistry Package for the NISQ Era, Journal of Chemical Theory and Computation 19, 3966-3981 (2023), arXiv:2303.10825, doi:10.1021/acs.jctc.3c00319",
      "bound_type": "variational",
      "energy_per_site": -0.528221
    },
    "projected": null,
    "extrapolated": null,
    "approximate": null,
    "below_exact": []
  },
  "no_best_reason": null,
  "record": {
    "energy": -5.28221,
    "sigma": null,
    "method": "VQE",
    "ansatz": null,
    "method_detail": "UCCSD ansatz, TenCirChem",
    "reference": "Weitang Li, Jonathan Allcock, Lixue Cheng et al., TenCirChem: An Efficient Quantum Computational Chemistry Package for the NISQ Era, Journal of Chemical Theory and Computation 19, 3966-3981 (2023), arXiv:2303.10825, doi:10.1021/acs.jctc.3c00319",
    "bound_type": "variational",
    "energy_per_site": -0.528221
  },
  "no_record_reason": null
}