Spreading Phenomena Question
Consider an epidemic spreading on a large scale-free network whose degree distribution follows \[ P(k) \sim k^{-\gamma} \] with \(2 < \gamma \le 3\). According to Network Epidemics theory field, which of the following statements is correct? A) The epidemic spreads more slowly than in a random network because hubs act as bottlenecks. B) The characteristic spreading time increases with the second moment \(\langle k^2 \rangle\). C) In the SIS model, the epidemic threshold \(\lambda_c\) tends to zero as the network size becomes very large (\(N \rightarrow \infty\)). D) The early-time behavior of the SI model is linear in time rather than exponential. E) None of the above. Original idea by: Carlos Trindade