Anomalous epidemic spreading. The actual Covid-19 epidemics has renewed interest in epidemic models and their coupling to economy and infrastructure. Here simple generalized SIS and SIR models are used to gain insight into the dynamics of an epidemic when the recovery of sick individuals depends on restrictions, ... Read more

Universal and Non-Universal Scaling in Brain Activity and Artificial Neural Networks. The human brain is in a (non-equilibrium) state of perpetual reverberating activity, even in the absence of stimuli and tasks. Shedding light onto the origin and functional meaning of such an activity has become essential to understand how the brain represents ... Read more

The scales of viral-host co-evolution Living systems often attempt to calculate and predict the future state of the environment. Given the stochastic nature of many biological systems how is that possible? ... Read more

Competing species growing on a rugged front. When competing species expand into new territory, the population is dominated by descendants of a few successful ancestors at the expansion front. Successful ancestry is stochastic, but biased by fitness of the individual, as well as favorable geographic location ... Read more