论文标题
合作接管的突变阈值
A Mutation Threshold for Cooperative Takeover
论文作者
论文摘要
生命起源的主要理论之一包括假设，根据该假设，生命将作为分子的合作网络演变而来。因此，解释合作$ - $，尤其是它的出现，偏爱生命分子的演变$ - $ - $是描述从非生命到生活的过渡的关键要素。使用基于代理的迭代囚犯困境的建模，我们研究了在随机和空间扩展环境中合作行为的出现，并表征了继承和可变性的影响。我们证明存在一个突变阈值，在该突变阈值中，合作为$ - $违反$ - $ $选择，这驱动了对整个系统的戏剧性和强大的合作收购，以持续到误差灾难，以一种让人联想到统计物理学中典型的相位过渡现象的方式。此外，我们的结果还意味着，最简单的有条件合作策略之一“ tit-for-tat”在生活起源所需的合作行为的出现中起着关键作用。
One of the leading theories for the origin of life includes the hypothesis according to which life would have evolved as cooperative networks of molecules. Explaining cooperation$-$and particularly, its emergence in favoring the evolution of life-bearing molecules$-$is thus a key element in describing the transition from nonlife to life. Using agent-based modeling of the iterated prisoner's dilemma, we investigate the emergence of cooperative behavior in a stochastic and spatially extended setting and characterize the effects of inheritance and variability. We demonstrate that there is a mutation threshold above which cooperation is$-$counterintuitively$-$selected, which drives a dramatic and robust cooperative takeover of the whole system sustained consistently up to the error catastrophe, in a manner reminiscent of typical phase transition phenomena in statistical physics. Moreover, our results also imply that one of the simplest conditional cooperative strategies, "Tit-for-Tat", plays a key role in the emergence of cooperative behavior required for the origin of life.
