Anisotropic invasion and its consequences in two-strategy evolutionary games on a square lattice
Open Access
- 22 November 2016
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review E
- Vol. 94 (5), 052314
- https://doi.org/10.1103/physreve.94.052314
Abstract
We have studied invasion processes in two-strategy evolutionary games on a square lattice for imitation rule when the players interact with their nearest neighbors. Monte Carlo simulations are performed for systems where the pair interactions are composed of a unit strength coordination game when varying the strengths of the self-dependent and cross-dependent components at a fixed noise level. The visualization of strategy distributions has clearly indicated that circular homogeneous domains evolve into squares with an orientation dependent on the composition. This phenomenon is related to the anisotropy of invasion velocities along the interfaces separating the two homogeneous regions. The quantified invasion velocities indicate the existence of a parameter region in which the invasions are opposite for the horizontal (or vertical) and the tilted interfaces. In this parameter region faceted islands of both strategies shrink and the system evolves from a random initial state into the homogeneous state that first percolated.Funding Information
- Hungarian Scientific Research Fund (OTKA TK-120785)
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