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arXiv 2102.03887q-bio.PEcond-mat.stat-mechnlin.PSphysics.soc-ph
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非格子人群的社会困境

Social dilemmas in off-lattice populations

B. F. de Oliveira, A. Szolnoki

摘要:

探索空间互惠对合作演变的可能后果是一个深入研究的研究途径。相关的工作假设了一定的相互作用图的竞争球员和研究如何特定的拓扑结构可能会影响的动力学行为。在本文中,我们应用了一个数值上更苛刻的非格子人口的方法,这可能是潜在的相关,特别是在微生物环境中。正如预期的那样,结果在概念上与格型相互作用图获得的结果相似,但也可以揭示一些惊人的差异。一方面,在非晶格种群中,空间互易性可能比基于晶格的系统更有效地工作。另一方面,在连续空间概念中,竞争策略可能彼此分离,这使得合作者即使在相对较高的诱惑值下也有机会生存。此外,缺乏严格的邻域导致软边界之间的竞争补丁,这危及长期稳定的同质域。我们调查了主要的社会困境游戏的基础上对相互作用的球员,并揭示所有的类比和差异相比,在格子模拟。

英文摘要:

Exploring the possible consequences of spatial reciprocity on the evolution of cooperation is an intensively studied research avenue. Related works assumed a certain interaction graph of competing players and studied how particular topologies may influence the dynamical behavior. In this paper we apply a numerically more demanding off-lattice population approach which could be potentially relevant especially in microbiological environments. As expected, results are conceptually similar to those which were obtained for lattice-type interaction graphs, but some spectacular differences can also be revealed. On one hand, in off-lattice populations spatial reciprocity may work more efficiently than for a lattice-based system. On the other hand, competing strategies may separate from each other in the continuous space concept, which gives a chance for cooperators to survive even at relatively high temptation values. Furthermore, the lack of strict neighborhood results in soft borders between competing patches which jeopardizes the long term stability of homogeneous domains. We survey the major social dilemma games based on pair interactions of players and reveal all analogies and differences compared to on-lattice simulations.

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