Record
-0.52259(1)
E/N (S.S)
VMC + 1 Lanczos step
Hu, Becca, Parola & Sorella, Dir · lowest eligible strict variational bound
(rules §6)
The Hamiltonian
H = ∑⟨ij⟩ σi·σj + J2 ∑⟨⟨ij⟩⟩ σi·σj
J1 = 1, J2 = 0.4, nearest and next-nearest neighbours, written with Pauli matrices.
- lattice
- square
- sites
- 324
- boundary
- periodic
- J2
- 0.4
- energies
- 3
Stored as a total energy in the convention of
VarBench; quoted here as
E/N (S.S), which is what the papers report
(how the conversion works).
How these numbers were read
Rows added after the VarBench import record where the number came from.
-0.52333(1) — VMC + Lanczos steps, extrapolated in the variance
Checked 2026-09-15 · source text of arXiv:1304.2630 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; parsed by column from the primary table
Reported as. -0.52333(1)
TABLE IV of arXiv:1304.2630 (pypdf layout text, line 396), L = 18, S = 0, J2/J1 = 0.4 | E/J1 per site in S.S units on the L x L periodic torus; the S = 0 row is the ground state
-0.52259(1) — VMC + 1 Lanczos step
Checked 2026-09-15 · source text of arXiv:1304.2630 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; parsed by column from the primary table
Reported as. -0.52259(1)
TABLE II of arXiv:1304.2630 (pypdf layout text, line 354), L = 18, S = 0, J2/J1 = 0.4 | E/J1 per site in S.S units on the L x L periodic torus; the S = 0 row is the ground state
-0.52107(1) — VMC, p = 0 Lanczos steps
Checked 2026-09-15 · source text of arXiv:1304.2630 read locally (arXiv HTML or pypdf layout text); value copied from the harvested cell and the text, no LLM transcription of numbers; parsed by column from the primary table
Reported as. -0.52107(1)
TABLE I of arXiv:1304.2630 (pypdf layout text, line 332), L = 18, S = 0, J2/J1 = 0.4 | E/J1 per site in S.S units on the L x L periodic torus; the S = 0 row is the ground state