Figure 3.

Binding capacity per site b = d² ln Ψ/d ln ω² for two-dimensional lattices (from left to right: 5×5, 4×4, 3×3, 2×2, 1×1) with σ = 10. The increase in b with N is conducive to a phase-transition-like discontinuity in the thermodynamic limit N → ∞.