92 citations · 218 across the 8 of their papers we have counts for
8 papers
Phenomenological Models of Socio-Economic Network Dynamics
George C. M. A. Ehrhardt, Matteo Marsili, Fernando Vega-Redondo
We study a general set of models of social network evolution and dynamics. The models consist of both a dynamics on the network and evolution of the network. Links are formed prefe…
On the rise and fall of networked societies
George C. M. A. Ehrhardt, Matteo Marsili, Fernando Vega-Redondo
We review recent results on the dynamics of social networks which suggest that the interplay between the network formation process and volatility may lead to the occurrence of disc…
Emergence and resilience of social networks: a general theoretical framework
George C. M. A. Ehrhardt, Matteo Marsili, Fernando Vega-Redondo
We introduce and study a general model of social network formation and evolution based on the concept of preferential link formation between similar nodes and increased similarity…
Potts Model On Random Trees
G. C. M. A. Ehrhardt, M. Marsili
We study the Potts model on locally tree-like random graphs of arbitrary degree distribution. Using a population dynamics algorithm we numerically solve the problem exactly. We con…
Segregation Mechanisms in a Model of an Experimental Binary Granular Mixture
George C. M. A. Ehrhardt, Andrew Stephenson, Pedro M. Reis
A simple phenomenological model of a binary granular mixture is developed and investigated numerically. We attempt to model the experimental system of [1,2] where a horizontally vi…
Persistence Exponents and the Statistics of Crossings and Occupation Times for Gaussian Stationary Processes
George M. C. A. Ehrhardt, Satya N. Majumdar, Alan J. Bray
We consider the persistence probability, the occupation-time distribution and the distribution of the number of zero crossings for discrete or (equivalently) discretely sampled Gau…