渗透(认知心理学)
人口
渗流阈值
统计物理学
计算机科学
拓扑(电路)
生物
数学
物理
人口学
组合数学
神经科学
量子力学
社会学
电阻率和电导率
标识
DOI:10.1103/physrevlett.95.108701
摘要
Diseases spread through host populations over the networks of contacts between individuals and a number of results about this process have been derived in recent years by exploiting connections between epidemic processes and bond percolation on networks. Here we investigate the case of two pathogens in a single population, which has been the subject of recent interest among epidemiologists. We demonstrate that two pathogens competing for the same hosts can both spread through a population only for intermediate values of the bond occupation probability that lie above the classic epidemic threshold and below a second higher value, which we call the coexistence threshold, corresponding to a distinct topological phase transition in networked systems.
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