Universality and dependence on initial conditions in the class of the nonlinear molecular beam epitaxy equation
Universality and dependence on initial conditions in the class of the nonlinear molecular beam epitaxy equation
We report extensive numerical simulations of growth models belonging to the nonlinear molecular beam epitaxy (nMBE) class, on flat (fixed-size) and expanding substrates (ES). In both $d=1+1$ and $2+1$, we find that growth regime height distributions (HDs), and spatial and temporal covariances are universal, but are dependent on the initial …