can be effectively considered additive. A nice example of this, a case in which a front driven by multiplicative noise is found to belong to a universality class described by an additive noise stochastic equation, is described in [19]. The analysis of the exact solutions to Eq. (4) for γ > 1 /ζ and long times shows the diffusion term is irrelevant in the large scale | θ − θ $^{′}$|  ≫ t 1 /ζ − γ and the correlation becomes [15, 16] 6 C ( θ, θ $^{′}$, t ) ∼      t 1 − $^{γd}$δ ( θ − θ $^{′}$) /J ( θ ) if γd < 1 , ln( t ) δ ( θ − θ $^{′}$) /J ( θ ) if γd = 1 , δ ( θ − θ $^{′}$) /J ( θ ) if γd > 1 , (5) FIG. 2: Radial random deposition growth process plotted at different times. The values of the parameters are F = 2, γ = 1, ϵ = (200 π ) − $^{1}$, and the system has been discretized in 211 spatial points. We have used as initial condition r ( θ, 1) = 2 (note that we have used as initial time t$_{0}$ = 1). where C ( θ, θ $^{′}$, t ) = 〈 ρ ( θ, t ) ρ ( θ $^{′}$, t ) 〉 . In terms of arc-length differences ℓ − ℓ ′ ∼ t $^{γ}$( θ − θ $^{′}$) one