All instances / Hubbard
Hubbard square 8x8, U = -8, n ≈ 0.7813
Hubbard/square_64_P_25_-8
No record
—
solved exactly (rules §6).
Every row is still listed below.
The Hamiltonian
H = −t ∑⟨ij⟩,σ (c†iσcjσ + h.c.) + U ∑i ni↑ni↓
t = 1, U = -8, N↑ = N↓ = 25 on 64 sites.
- lattice
- square
- sites
- 64
- boundary
- periodic
- Nf
- 25
- U
- -8
- energies
- 1
Stored as a total energy in the convention of
VarBench; quoted here as
E/site, which is what the papers report
(how the conversion works).
Every published energy
Grouped by what the number is. Ranking happens only inside the first group.
Numerically exact (1)
Exact diagonalization, an exact solution, or sign-problem-free QMC where that is established: the answer, not a claim about it.
Coverage
Newest published number here: 2015. Nothing has been added to this instance since the VarBench snapshot of 2024-10-22.