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arXiv 1809.05575physics.soc-phcond-mat.stat-mech
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随机正则图上协同流行病的分支

Bifurcations in synergistic epidemics on random regular graphs

Sergei N. Taraskin, Francisco J. Pérez-Reche

摘要:

根据定义在随机正则图上的易感-感染-易感(SIS)模型的规则,分析和数值研究了协同效应在传染病传播中的作用.非线性动力学显示,导致这种传播现象表现出三种不同的制度:非活性,活性和双稳态的分叉图。分叉位点对节点度的依赖性进行了研究,并发现了有趣的效果,与预期的行为非协同流行病。

英文摘要:

The role of cooperative effects (i.e. synergy) in transmission of infection is investigated analytically and numerically for epidemics following the rules of Susceptible-Infected-Susceptible (SIS) model defined on random regular graphs. Non-linear dynamics are shown to lead to bifurcation diagrams for such spreading phenomena exhibiting three distinct regimes: non-active, active and bi-stable. The dependence of bifurcation loci on node degree is studied and interesting effects are found that contrast with the behaviour expected for non-synergistic epidemics.

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