ACTIVITY TUNES THE STRESS-STRAIN RELATION IN AN ACTIVE STOCHASTIC ELASTIC SOLID

This work considers the one-dimensional dynamics of an active elastic solid, defined as a network of active stochastic particles interacting by cubic nonlinear springs. Based on statistical physics, a coarse-graining procedure is applied to this system, which leads to continuum expressions. The system is also numerically studied, and a peculiar behavior is found, expressly, that the classical cubic strain-stress relation tends to a linear one as activity grows.