Record
-0.4967987(6)
E/N (S.S)
CNN-MPS (h,D,l)=(32,15,20)
Fan et al. (2026) · lowest eligible strict variational bound
(rules §6)
The Hamiltonian
H = ∑⟨ij⟩ σi·σj + J2 ∑⟨⟨ij⟩⟩ σi·σj
J1 = 1, J2 = 0.5, nearest and next-nearest neighbours, written with Pauli matrices.
- lattice
- square
- sites
- 400
- boundary
- periodic
- J2
- 0.5
- energies
- 2
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.
-0.4967987(6) — CNN-MPS (h,D,l)=(32,15,20)
Checked 2026-09-13 · arXiv HTML parsed locally, no LLM transcription
Reported as. -0.4967987 (+/- 6e-7) per site in S.S units
Read from Table 1 of arXiv:2603.14425 (square-lattice J1-J2 at J2/J1=0.5, PBC, E per site in S.S units), parsed from the arXiv HTML. 20x20; no VarBench instance existed for this size.
-0.496732(1) — ViT with symmetry restoration
Checked 2026-09-13 · arXiv HTML parsed locally, no LLM transcription
Reported as. -0.496732 (+/- 0.000001) per site in S.S units
Read from Table 1 of arXiv:2603.14425 (square-lattice J1-J2 at J2/J1=0.5, PBC, E per site in S.S units), parsed from the arXiv HTML. Listed in Table 1 as the L=20 ViT 2026 value; matches the source paper's own symmetry-restoration sequence.