Nonequilibrium Roughening Transition in a Simple Model of Fungal Growth in1+1Dimensions

Abstract
We introduce a simple model of yeastlike growth of fungi colonies, which exhibits a continuous roughening transition far from equilibrium from a smooth ( α=0) to a rough phase ( α=1/2) in 1+1 dimensions. At the transition some scaling exponents are calculated by mapping the problem onto a directed percolation process. The model reproduces the roughening transition observed in some experiments of fungal growth.