Nature of the epidemic threshold for the susceptible-infected-susceptible dynamics in networks
We develop an analytical approach to the susceptible-infected-susceptible epidemic model that allows us to unravel the true origin of the absence of an epidemic threshold in heterogeneous networks. We find that a delicate balance between the number of high degree nodes in the network and the topolog...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/20592 |
| Acceso en línea: | https://hdl.handle.net/2117/20592 https://dx.doi.org/10.1103/PhysRevLett.111.068701 |
| Access Level: | acceso abierto |
| Palabra clave: | Thermodynamics Statistical physics susceptible-infected-susceptible epidemic model Epidemic Threshold Termodinàmica Física estadística Àrees temàtiques de la UPC::Física |
| Sumario: | We develop an analytical approach to the susceptible-infected-susceptible epidemic model that allows us to unravel the true origin of the absence of an epidemic threshold in heterogeneous networks. We find that a delicate balance between the number of high degree nodes in the network and the topological distance between them dictates the existence or absence of such a threshold. In particular, small-world random networks with a degree distribution decaying slower than an exponential have a vanishing epidemic threshold in the thermodynamic limit. |
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