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Criticality of Epidemic Spreading in Mobile Individuals Mediated by Environment |
| HE Min-Hua, ZHANG Duan-Ming, FANG Pin-Jie, LI Zhi-Cong, WANG Hai-Yan |
| Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
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HE Min-Hua, ZHANG Duan-Ming, FANG Pin-Jie et al 2009 Chin. Phys. Lett. 26 010502 |
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Abstract We investigate the critical behaviour of an epidemical model in a diffusive population mediated by a static vector environment on a 2D network. It is found that this model presents a dynamical phase transition from disease-free state to endemic state with a finite population density. Finite-size and
short-time dynamic scaling relations are used to determine the critical population density and the critical exponents characterizing the behaviour near the critical point. The results are compatible with the universality class of directed percolation coupled to a conserved diffusive field with equal diffusion
constants.
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05.10.-a
05.50.+q
87.19.Xx
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Received: 07 June 2008
Published: 24 December 2008
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| PACS: |
05.10.-a
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(Computational methods in statistical physics and nonlinear dynamics)
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05.50.+q
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(Lattice theory and statistics)
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87.19.Xx
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