Evolutionary dynamics of the spatial Prisoner's Dilemma with self-inhibition
Research output: Contribution to journal › Article › Scientific › peer-review
|Number of pages||7|
|Journal||Applied Mathematics and Computation|
|Publication status||Published - 5 Feb 2012|
|Publication type||A1 Journal article-refereed|
In this paper we study the influence of interventions on self-interactions in a spatial Prisoner's Dilemma on a two-dimensional grid with periodic boundary conditions and synchronous updating of the dynamics. We investigate two different types of self-interaction modifications. The first type (FSIP) is deterministic, effecting each self-interaction of a player by a constant factor, whereas the second type (PSIP) performs a probabilistic interventions. Both types of interventions lead to a reduction of the payoff of the players and, hence, represent inhibiting effects. We find that a constant but moderate reduction of self-interactions has a very beneficial effect on the evolution of cooperators in the population, whereas probabilistic interventions on self-interactions are in general counter productive for the coexistence of the two different strategies.