Parameters
Width W: 0.00
Time t: 0
β≈1/3 → W~t^?
The Kardar-Parisi-Zhang equation ∂h/∂t = ν∇²h + (λ/2)(∇h)² + η governs stochastic surface growth. The nonlinear term breaks up-down symmetry; roughness scales as W ~ t^β with β=1/3 (KPZ universality class).