Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18787
 Title: Dynamical properties of model communication networks Author: Guimerà Manrique, RogerArenas, ÀlexDíaz Guilera, AlbertGiralt, Francesc Keywords: Física matemàticaDinàmica molecularXarxes de comunicacionsFenòmens crítics (Física)Transformacions de fase (Física estadística)Mathematical physicsMolecular dynamicsCommunication networksCritical phenomena (Physics)Phase transformations (Statistical physics) Issue Date: 2002 Publisher: The American Physical Society 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 of 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 cross-over from a low-density to a high-density state. For $\xi>1$ the transition to congestion is discontinuous and congestion nuclei arise. Note: Reproducci del document publicat a: http://dx.doi.org/10.1103/PhysRevE.66.026704 It is part of: Physical Review E, 2002, vol. 66, núm. 2, p. 026704-1-026704-8 URI: http://hdl.handle.net/2445/18787 Related resource: http://dx.doi.org/10.1103/PhysRevE.66.026704 ISSN: 1063-651X Appears in Collections: Articles publicats en revistes (Física de la Matèria Condensada)

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