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All instances / Heisenberg

Heisenberg pyrochlore 2x2x2 (128 sites)

Best values (rules §6)

best variational -0.49229(7) VMC (PP + RBM)
Pohle et al. (2023) · the lowest unflagged variational energy, a strict variational bound
best extrapolated -0.49434(5) VMC (PP)
Pohle et al. (2023) · the lowest unflagged extrapolated energy, an extrapolation, not a bound

Energies as E/N (S.S). Classes are different claims and are not ranked against each other.

The Hamiltonian

H = ∑⟨ij⟩ σi·σj

Nearest-neighbour Heisenberg antiferromagnet, J = 1, written with Pauli matrices.

lattice
pyrochlore-2x2x2
sites
128
boundary
periodic
energies
8

Stored as a total energy; quoted here as E/N (S.S), which is what the papers report (how the conversion works).

Every published energy

Grouped by what the number is. The exact energy comes first where there is one; in every other group the lowest unflagged energy is its best value, and each row's distance is to that best (rules §6).

Strict variational upper bounds (6)

Energies that a variational state reached (VMC, DMRG and MPS at finite bond dimension, PEPS, NQS, VQE). Each is an upper bound on the ground-state energy.

E/N (S.S)distance to class bestσVar(E)V-score methodsourcecodeyearcomment
-0.49229best variational 0 7.0e-5 1.07e+1 2.2e-2 VMC (PP + RBM)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.49098 1.3e-3 1.0e-5 1.83e+1 3.7e-2 VMC (PP)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.490325 2.0e-3 5.0e-6 1.99e+1 4.0e-2 VMC (PP)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.489089 3.2e-3 2.0e-6 2.55e+1 5.2e-2 VMC (PP + RBM)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.486024 6.3e-3 3.0e-6 4.43e+1 9.2e-2 VMC (PP)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.485451 6.8e-3 3.0e-6 4.54e+1 9.4e-2 VMC (PP)
preprint
Pohle et al. (2023) uses mVMC 2023

Extrapolations (2)

Zero-variance or bond-dimension extrapolations. These are not bounds: no ansatz reached the number.

E/N (S.S)distance to class bestσVar(E)V-score methodsourcecodeyearcomment
-0.49434best extrapolated 0 5.0e-5 n/a n/a VMC (PP)
preprint
Pohle et al. (2023) uses mVMC 2023
-0.493tied with best extrapolated at 2σ 1.5e-3 1.0e-3 n/a n/a DMRG
peer reviewed
Hagymási et al. (2020) 2020

How these numbers were read

Where each number below was read, and how it was checked.

-0.49434(5), VMC (PP)

Checked 2026-09-15 · source text of arXiv:2311.11561 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. −0.49434(5)

Main text: 'the max. flip. initial state converges to the energy E0/Ns=−0.49434(5)... for Ns=128' after variance extrapolation. | Paper writes H=J∑S_i·S_j with J=1 (S=1/2 operators, S·S convention, not Pauli); the paper's own isolated-tetrahedron limit value -0.37475(1) matches the exact S·S single-tetrahedron result -3/8=-0.375 per site, confirming no Pauli conversion; magnitude matches catalog's pyrochlore best_per_site scale (~-0.49) directly since the paper already reports E/Ns.

-0.493(1), DMRG

Checked 2026-09-15 · source text of arXiv:2010.03563 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; adversarial re-read: confirmed

Reported as. -0.4928(10)

Table I, row 'Cluster 128': GS energy -0.4928(10). Not present at all in the harvested cells (matcher instead picked up unrelated Table II correlation-strength numbers for this instance); read directly from the source table. | Same S·S convention as the N=32 row (same Hamiltonian, same table).

-0.49229(7), VMC (PP + RBM)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.49229(7), sigma^2 = 0.000169(12)

Supplemental Material Table SI and Appendix B of arXiv:2311.11561 (v1, the only version) | Paper writes H=J∑S_i·S_j with J=1 (S=1/2 operators, S·S convention, not Pauli); the paper's own isolated-tetrahedron limit value -0.37475(1) matches the exact S·S single-tetrahedron result -3/8=-0.375 per site, confirming no Pauli conversion; magnitude matches catalog's pyrochlore best_per_site scale (~-0.49) directly since the paper already reports E/Ns. | VarBench's -0.4922012 for the same ansatz is Pohle's own VarBench submission of 2022-02-26 (varbench commit 380a1fe51c), which predates the paper and is not printed in it; it agrees with this value to 1.1 sigma, so both are carried as separate measurements.

-0.49098(1), VMC (PP)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.49098(1), sigma^2 = 0.000289(4)

Supplemental Material Table SI of arXiv:2311.11561 (v1, the only version; pdftotext layout of the committed PDF) | E/Ns in S.S units with periodic boundaries (caption and Eq. 1); sigma^2 is the relative variance (<E^2>-<E>^2)/<E>^2 of Eq. S26, stored as energy_variance = sigma^2 x E^2 in the instance's units

-0.490325(5), VMC (PP)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.490325(5), sigma^2 = 0.0003150(34)

Supplemental Material Table SI of arXiv:2311.11561 (v1, the only version; pdftotext layout of the committed PDF) | E/Ns in S.S units with periodic boundaries (caption and Eq. 1); sigma^2 is the relative variance (<E^2>-<E>^2)/<E>^2 of Eq. S26, stored as energy_variance = sigma^2 x E^2 in the instance's units

-0.489089(2), VMC (PP + RBM)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.489089(2), sigma^2 = 0.000407(19)

Supplemental Material Table SI of arXiv:2311.11561 (v1, the only version; pdftotext layout of the committed PDF) | E/Ns in S.S units with periodic boundaries (caption and Eq. 1); sigma^2 is the relative variance (<E^2>-<E>^2)/<E>^2 of Eq. S26, stored as energy_variance = sigma^2 x E^2 in the instance's units

-0.486024(3), VMC (PP)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.486024(3), sigma^2 = 0.000716(4)

Supplemental Material Table SI of arXiv:2311.11561 (v1, the only version; pdftotext layout of the committed PDF) | E/Ns in S.S units with periodic boundaries (caption and Eq. 1); sigma^2 is the relative variance (<E^2>-<E>^2)/<E>^2 of Eq. S26, stored as energy_variance = sigma^2 x E^2 in the instance's units

-0.485451(3), VMC (PP)

Checked 2026-09-15 · source text of arXiv:2311.11561 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; verified 2026-09-16 by an independent second reading (arXiv versions, VarBench history)

Reported as. −0.485451(3), sigma^2 = 0.0007353(14)

Supplemental Material Table SI of arXiv:2311.11561 (v1, the only version; pdftotext layout of the committed PDF) | E/Ns in S.S units with periodic boundaries (caption and Eq. 1); sigma^2 is the relative variance (<E^2>-<E>^2)/<E>^2 of Eq. S26, stored as energy_variance = sigma^2 x E^2 in the instance's units

Coverage

Newest published number here: 2023. Literature last checked 2026-09-15 (citation screen of Pohle et al. 2023 (arXiv:2311.11561, pyrochlore): citing works from OpenAlex and Semantic Scholar (scripts/cited_by.mjs)): 2 papers read, 0 of them with an energy on this page.

This instance as data

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