{
  "model": "TFIsing",
  "lattice": "chain",
  "n_sites": 10,
  "boundary": "O",
  "params": {
    "h": 1
  },
  "instance_id": "TFIsing/chain_10_O_1",
  "rows": [
    {
      "energy": -12.381489999654734,
      "sigma": null,
      "energy_variance": null,
      "dof": 10,
      "einf": 0,
      "v_score": null,
      "method": "Exact Diagonalization",
      "bound_type": "exact",
      "bound_type_reason": "exact diagonalization|ex",
      "reference": "[code](https://github.com/varbench/methods/blob/main/scripts/TFIsing/chain_10_O_1/ed_netket.sh)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true
    },
    {
      "energy": -12.381489999654796,
      "sigma": null,
      "energy_variance": 4.8e-13,
      "dof": 10,
      "einf": 0,
      "v_score": 3.1310890179777417e-14,
      "method": "DMRG (bond dimension = 13)",
      "bound_type": "variational",
      "bound_type_reason": "vmc|\\brbm\\b|\\brnn\\b|jast",
      "reference": "[code](https://github.com/varbench/methods/blob/main/scripts/TFIsing/chain_10_O_1/dmrg.sh)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true
    },
    {
      "energy": -12.381718,
      "sigma": 0.000022,
      "energy_variance": 0.00049440652,
      "dof": 10,
      "einf": 0,
      "v_score": 0.00003224945445805451,
      "method": "RBM (alpha = 1)",
      "bound_type": "variational",
      "bound_type_reason": "vmc|\\brbm\\b|\\brnn\\b|jast",
      "reference": "[code](https://github.com/varbench/methods/blob/main/scripts/TFIsing/chain_10_O_1/vmc_rbm.sh)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true,
      "defect": {
        "flag": "below-exact",
        "finding": "10.4 sigma below the exact ground state. Same cause as chain_10_P_1.",
        "diagnosis": "The published value is a minimum of the optimization trace, not a converged measurement. Three seeds each, netket 3.22.4, alpha=1 complex RBM, 2000 SR steps. Evaluating the trained parameters by FULL SUMMATION over all 1024 basis states (zero Monte-Carlo error) puts every converged energy ABOVE the exact value, as the variational principle requires, while every training trace dips 1.5e-3 to 3.5e-3 BELOW it. Each published value lies between the two.",
        "ruled_out": "Not an autocorrelation-underestimated error bar: tau_corr <= 0.05 and R_hat = 1.0000 across all six runs.",
        "evidence": "checks/results-tfising-rbm.json, checks/tfising_rbm_check.py"
      }
    },
    {
      "energy": -12.37844,
      "sigma": 0.00019,
      "energy_variance": 0.03606162,
      "dof": 10,
      "einf": 0,
      "v_score": 0.0023534956549224858,
      "method": "Jastrow baseline",
      "bound_type": "variational",
      "bound_type_reason": "vmc|\\brbm\\b|\\brnn\\b|jast",
      "reference": "[code](https://github.com/varbench/methods/blob/main/scripts/TFIsing/chain_10_O_1/vmc_jastrow.sh)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true
    },
    {
      "energy": -12.38133801299217,
      "sigma": null,
      "energy_variance": 0.0007985776929899657,
      "dof": 10,
      "einf": 0,
      "v_score": 0.00005209331734324039,
      "method": "VQE HV (d = 24)",
      "bound_type": "variational",
      "bound_type_reason": "\\bvqe\\b|\\bcircuit\\b|\\bpq",
      "reference": "[code](https://github.com/varbench/methods/blob/main/programs/pqc_ising_1d/pqc_HamVar.py)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true
    },
    {
      "energy": -12.380038028233812,
      "sigma": null,
      "energy_variance": 0.007944439359960143,
      "dof": 10,
      "einf": 0,
      "v_score": 0.0005183454574944895,
      "method": "VQE R-CX (d = 10)",
      "bound_type": "variational",
      "bound_type_reason": "\\bvqe\\b|\\bcircuit\\b|\\bpq",
      "reference": "[code](https://github.com/varbench/methods/blob/main/programs/pqc_ising_1d/pqc_RYCNOT.py)",
      "source": "varbench@2024-10-22",
      "provenance": "imported",
      "baseline": true
    }
  ],
  "url": "https://qmbl.org/i/TFIsing/chain_10_O_1/",
  "per_site_divisor": 10,
  "per_site_label": "E/N (Pauli)",
  "record": {
    "energy": -12.381489999654796,
    "sigma": null,
    "method": "DMRG (bond dimension = 13)",
    "reference": "[code](https://github.com/varbench/methods/blob/main/scripts/TFIsing/chain_10_O_1/dmrg.sh)",
    "energy_per_site": -1.2381489999654796
  },
  "no_record_reason": null
}