Fronts of compact bacterial colonies are not in the KPZ universality class
Fronts of compact bacterial colonies are not in the KPZ universality class
The rich growth patterns found in bacterial colonies have attracted a large attention from the biology, biophysics, and mathematical communities. As a function of the mobility and the nutrient concentration, the fronts of bacterial colonies are known to display a variety of behaviours, some of them believed to correspond to universality classes of non-equilibrium interface growth.