Phys. Rev. Lett. 99, 128701 (2007) [4 pages]Amplified Signal Response in Scale-Free Networks by Collaborative SignalingSee Also: Erratum Received 6 June 2007; published 20 September 2007 Many natural and artificial two-states signaling devices are connected forming networks. The information-processing potential of these systems is usually related to the response to weak external signals. Here, using a network of overdamped bistable elements, we study the effect of a heterogeneous complex topology on the signal response. The analysis of the problem in random scale-free networks, reveals that heterogeneity plays a crucial role in amplifying external signals. We have contrasted numerical simulations with analytical calculations in simplified topologies. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.128701
DOI:
10.1103/PhysRevLett.99.128701
PACS:
89.75.Hc, 05.45.Xt, 89.75.Fb
See AlsoErratum: Juan A. Acebrón, Sergi Lozano, and Alex Arenas, Erratum: Amplified Signal Response in Scale-Free Networks by Collaborative Signaling [Phys. Rev. Lett. 99, 128701 (2007)], Phys. Rev. Lett. 99, 229902 (2007). |
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