Berlin 2018 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 76: Complex Contagion Phenomena II (Focus Session, joint SOE/DY/BP/SNPD) (joint session SOE/DY/BP)

DY 76.9: Talk

Friday, March 16, 2018, 12:00–12:15, MA 001

Cooperation vs. defection in an evolutionary ecological framework — •Felix Köster and Fakhteh Ghanbarnejad — Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany

In this work, we first extend the CGB model [1] by considering each pathogen has two different strategies: cooperation or defection. Then we analyse the fundamental properties of the interacting contagious processes in a well-mixed population, i.e. homogeneous mean field approximation. Altering parameters we discover new discontinuous phase transitions for which we investigate the multi-stability shift in the phase diagram. We show also qualitatively same results by stochastic simulations. Furthermore, an evolutionary game is introduced to mimic conditions, which force agents to adept their strategies by minimizing their payoff. This study improves our understanding of the natural dynamics of species populations in an evolutionary ecological framework

[1] L. Chen, F. Ghanbarnejad, D. Brockmann "Fundamental properties of cooperative contagion processes"; New J. Phys. 19, 103041(2017)

key words; SIS, interacting dynamics, co-infection, complex contagions, discontinuous transitions