Journal
NATURE PHYSICS
Volume 16, Issue 5, Pages 590-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41567-020-0810-3
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Funding
- US Army Research Laboratory
- US Army Research Office [W911NF-18-1-0376]
- Government of Aragon, Spain [E36-17R]
- MINECO
- FEDER [FIS2017-87519-P]
- Intesa Sanpaolo Innovation Center
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The mathematical modelling of how information spreads in social networks has latterly gained fresh urgency. A study of realistic structured populations now identifies the threshold at which the propagation of rumours becomes contagious, thereby inducing a phase transition. Mathematical models of social contagion that incorporate networks of human interactions have become increasingly popular, however, very few approaches have tackled the challenges of including complex and realistic properties of socio-technical systems. Here, we define a framework to characterize the dynamics of the Maki-Thompson rumour spreading model in structured populations, and analytically find a previously uncharacterized dynamical phase transition that separates the local and global contagion regimes. We validate our threshold prediction through extensive Monte Carlo simulations. Furthermore, we apply this framework in two real-world systems, the European commuting and transportation network and the Digital Bibliography and Library Project collaboration network. Our findings highlight the importance of the underlying population structure in understanding social contagion phenomena and have the potential to define new intervention strategies aimed at hindering or facilitating the diffusion of information in socio-technical systems.
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