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https://locus.ufv.br//handle/123456789/18778
Tipo: | Artigo |
Título: | Collective versus hub activation of epidemic phases on networks |
Autor(es): | Ferreira, Silvio C. Sander, Renan S. Pastor-Satorras, Romualdo |
Abstract: | We consider a general criterion to discern the nature of the threshold in epidemic models on scale-free (SF) networks. Comparing the epidemic lifespan of the nodes with largest degrees with the infection time between them, we propose a general dual scenario, in which the epidemic transition is either ruled by a hub activation process, leading to a null threshold in the thermodynamic limit, or given by a collective activation process, corresponding to a standard phase transition with a finite threshold. We validate the proposed criterion applying it to different epidemic models, with waning immunity or heterogeneous infection rates in both synthetic and real SF networks. In particular, a waning immunity, irrespective of its strength, leads to collective activation with finite threshold in scale-free networks with large degree exponent, at odds with canonical theoretical approaches. |
Palavras-chave: | Hub activation Epidemic phases |
Editor: | Physical Review E. |
Tipo de Acesso: | American Physical Society |
URI: | https://doi.org/10.1103/PhysRevE.93.032314 http://www.locus.ufv.br/handle/123456789/18778 |
Data do documento: | 14-Mar-2016 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 464,42 kB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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