Stable cooperation emerges in stochastic multiplicative growth
Stable cooperation emerges in stochastic multiplicative growth
复制标题
随机乘法增长中出现稳定合作
DOI：
10.1103/physreve.108.l012401
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发表时间：
2023
影响因子：
2.4
通讯作者：
Grilli, Jacopo
中科院分区：
文献类型：
--
作者：
Fant, Lorenzo;Mazzarisi, Onofrio;Panizon, Emanuele;Grilli, Jacopo
理解合作的进化稳定性是生物学、社会学和经济学的中心问题。目前只有几种已知的机制可以保证合作的存在及其对欺骗的健壮性。在这里，我们引入了一种在波动中出现合作的机制。我们考虑其财富以乘法方式随机变化的代理人。每个代理人可以将她的部分财富作为公共物品分享，这些财富在所有代理人之间平均分配。我们表明，当代理人以长期视野运作时，合作在个人层面产生优势，因为它有效地屏蔽了代理人免受环境波动的有害影响。
Understanding the evolutionary stability of cooperation is a central problem in biology, sociology, and economics. There exist only a few known mechanisms that guarantee the existence of cooperation and its robustness to cheating. Here, we introduce a mechanism for the emergence of cooperation in the presence of fluctuations. We consider agents whose wealth changes stochastically in a multiplicative fashion. Each agent can share part of her wealth as a public good, which is equally distributed among all the agents. We show that, when agents operate with long-time horizons, cooperation produces an advantage at the individual level, as it effectively screens agents from the deleterious effect of environmental fluctuations.