Roger Guimera
Adjunct Professor
Chemical Engineering
Av. Paisos Catalans 26
Tarragona, Catalonia E-43007, Spain
Chemical & Biological Engineering
2145 Sheridan Road (Room E136)
Evanston, IL 60208, US
Dynamical properties of model communication networks
Phys. Rev. E 66, art. no. 026704 (2002)
Times cited: 121
Abstract
We study the dynamical properties of a collection of models for communication processes, characterized by a single parameter xi representing the relation between information load of the nodes and its ability to deliver this information. The critical transition to congestion reported so far occurs only for xi=1. This case is well analyzed for different network topologies. We focus on the properties of the order parameter, the susceptibility, and the time correlations when approaching the critical point. For xi<1, no transition to congestion is observed but it remains a crossover from a low-density to a high-density state. For xi>1, the transition to congestion is discontinuous and congestion nuclei arise.