Ultraviolet cascade in classical Yang-Mills theory

We study the real-time behavior of classical Yang-Mills theory under initial conditions with nonperturbatively large, infrared field amplitudes. Our lattice study confirms the cascade of energy toward higher momenta and lower occupancy, which occurs via a scaling solution f[p,t₁]=(t₀/t₁)4/7f[p(t₀/t₁)1/7,t₀]. Above a characteristic scale pmax, f falls exponentially; below pmax, f[p]∝p^-43. We find no evidence for different infrared exponents or for infrared occupancies in excess of those described by this scaling solution. We also investigate what the fate of large occupancies would be, both in the electric and the magnetic sector.