Claussen Jens Christian, Traulsen Arne
Institut für Theoretische Physik und Astrophysik, Christian-Albrechts Universität, Olshausenstrasse 40, 24098 Kiel, Germany.
Phys Rev Lett. 2008 Feb 8;100(5):058104. doi: 10.1103/PhysRevLett.100.058104. Epub 2008 Feb 7.
Coevolutionary dynamics is investigated in chemical catalysis, biological evolution, social and economic systems. The dynamics of these systems can be analyzed within the unifying framework of evolutionary game theory. In this Letter, we show that even in well-mixed finite populations, where the dynamics is inherently stochastic, biodiversity is possible with three cyclic-dominant strategies. We show how the interplay of evolutionary dynamics, discreteness of the population, and the nature of the interactions influences the coexistence of strategies. We calculate a critical population size above which coexistence is likely.
在化学催化、生物进化、社会和经济系统中研究了协同进化动力学。这些系统的动力学可以在进化博弈论的统一框架内进行分析。在本快报中，我们表明，即使在动力学本质上是随机的充分混合的有限种群中，三种循环主导策略也可能实现生物多样性。我们展示了进化动力学、种群离散性和相互作用性质之间的相互作用如何影响策略的共存。我们计算了一个临界种群规模，超过这个规模共存就有可能发生。
