Birth and Death in a Continuous Opinion Dynamics Model. The consensus   case
  We here discuss the process of opinion formation in an open community where agents are made to interact and consequently update their beliefs. New actors (birth) are assumed to replace individuals that abandon the community (deaths). This dynamics is simulated in the framework of a simplified model that accounts for mutual affinity between agents. A rich phenomenology is presented and discussed with reference to the original (closed group) setting. Numerical findings are supported by analytical calculations. 
Timoteo Carletti, Duccio Fanelli, Alessio Guarino, Franco Bagnoli,   Andrea Guazzini