Use este identificador para citar ou linkar para este item: 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 TamanhoFormato 
artigo.pdf
  Until 2100-12-31
Texto completo464,42 kBAdobe PDFVisualizar/Abrir ACESSO RESTRITO


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.