{
  "model": "Hubbard",
  "lattice": "rectangular-6x40",
  "n_sites": 240,
  "boundary": "P",
  "params": {
    "Nf": 105,
    "U": 12,
    "t1": 1,
    "t2": -0.5
  },
  "instance_id": "Hubbard/rectangular-6x40_240_P_105_12_t12_-0.5",
  "rows": [
    {
      "energy": -150.24,
      "sigma": null,
      "energy_variance": null,
      "dof": 210,
      "einf": 551.25,
      "v_score": null,
      "method": "VMC",
      "method_detail": "stripe λ = 5 + Jastrow + backflow",
      "method_as_published": "VMC, stripe λ = 5 (Jastrow + backflow)",
      "family": "backflow / Pfaffian",
      "bound_type": "variational",
      "bound_type_reason": "variational ansatz at a stated size; energy is an upper bound (assigned during source reading)",
      "reference": "Marino, Becca & Tocchio, Stripes in the extended t-t' Hubbard model: A Variational Monte Carlo analysis, SciPost Phys. 12, 180 (2022), arXiv:2111.04623",
      "peer_reviewed": true,
      "source": "sweep-allresults-2026-10-21",
      "provenance": "primary",
      "verified": {
        "checked_on": "2026-10-21",
        "method": "source text of arXiv:2111.04623 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": "-0.6260",
        "note": "Table 2 (U/t = 12), row t'/t = -0.5, column E_stripe (λ = 5), Lx = 40 per the caption; no per-value error bar | Energy per site in units of t on Lx x 6 ladders with 'periodic boundary conditions along both the x and the y directions', hole doping 1/8 (n = 7/8). Eq. (1): H = -t sum_<ij> - t' sum_<<ij>> + U sum n_up n_dn, so t2 = t'. Table 2 caption: Lx = 48, except Lx = 40 for the λ = 5 stripes. 'The error bar on the energy is always smaller than 10^-4' is one statement for the whole table, not a per-value sigma.",
        "secondary_of": null
      }
    }
  ],
  "url": "https://qmbl.org/i/Hubbard/rectangular-6x40_240_P_105_12_t12_-0.5/",
  "per_site_divisor": 240,
  "per_site_label": "E/site",
  "record": {
    "energy": -150.24,
    "sigma": null,
    "method": "VMC",
    "method_detail": "stripe λ = 5 + Jastrow + backflow",
    "reference": "Marino, Becca & Tocchio, Stripes in the extended t-t' Hubbard model: A Variational Monte Carlo analysis, SciPost Phys. 12, 180 (2022), arXiv:2111.04623",
    "bound_type": "variational",
    "energy_per_site": -0.626
  },
  "no_record_reason": null
}