Epidemic dynamics of two species of interacting particles on scale-free networks

Yong Yeol Ahn*, Hawoong Jeong, Naoki Masuda, Jae Dong Noh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)


We study the nonequilibrium phase transition in a model for epidemic spreading on scale-free networks. The model consists of two particle species A and B, and the coupling between them is taken to be asymmetric; A induces B while B suppresses A. This model describes the spreading of an epidemic on networks equipped with a reactive immune system. We present analytic results on the phase diagram and the critical behavior, which depends on the degree exponent γ of the underlying scale-free networks. Numerical simulation results that support the analytic results are also presented.

Original languageEnglish
Article number066113
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Issue number6
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics


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