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Title:Topologically determined optimal stochastic resonance responses of spatially embedded networks
Authors:Gosak, Marko (Author)
Korošak, Dean (Author)
Marhl, Marko (Author)
Files:.pdf New_Journal_of_Physics_2011_Gosak,_Korosak,_Marhl_Topologically_determined_optimal_stochastic_resonance_responses_of_spatially_embedded.pdf (2,08 MB)
URL http://stacks.iop.org/1367-2630/13/i=1/a=013012?key=crossref.5cd62d33d20126c6b370b6b9cef1a5f5
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:We have analyzed the stochastic resonance phenomenon on spatial networks of bistable and excitable oscillators, which are connected according to their location and the amplitude of external forcing. By smoothly altering the network topology from a scale-free (SF) network with dominating long-range connections to a network where principally only adjacent oscillators are connected, we reveal that besides an optimal noise intensity, there is also a most favorable interaction topology at which the best correlation between the response of the network and the imposed weak external forcing is achieved. For various distributions of the amplitudes of external forcing, the optimal topology is always found in the intermediate regime between the highly heterogeneous SF network and the strong geometric regime. Our findings thus indicate that a suitable number of hubs and with that an optimal ratio between short- and long-range connections is necessary in order to obtain the best global response of a spatial network. Furthermore, we link the existence of the optimal interaction topology to a critical point indicating the transition from a long-range interactions-dominated network to a more lattice-like network structure.
Keywords:physics, stochastic resonance, complex networks
Year of publishing:2011
Number of pages:str. 1-16
Numbering:Letn. 13
ISSN on article:1367-2630
COBISS_ID:18087432 Link is opened in a new window
DOI:10.1088/1367-2630/13/1/013012 Link is opened in a new window
License:CC BY 4.0
This work is available under this license: Creative Commons Attribution 4.0 International
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Record is a part of a journal

Title:New Journal of Physics
Publisher:Institute of Physics Publishing, Deutsche Physikalische Gesellschaft
COBISS.SI-ID:21135621 New window

Secondary language

Keywords:fizika, stohastična resonanca, kompleksne mreže


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