Topologically determined optimal stochastic resonance responses of spatially embedded networks
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.
physics
stochastic resonance
complex networks
fizika
stohastična resonanca
kompleksne mreže
true
false
true
Angleški jezik
Slovenski jezik
Znanstveno delo
2012-06-07 10:40:57
2012-06-07 10:40:59
2019-07-10 13:53:51
2019-07-10 13:53:52
2011
0
0
str. 1-16
Letn. 13
2011
0000-00-00
Zaloznikova
Objavljeno
NiDoloceno
1367-2630
53
21135621
18087432
10.1088/1367-2630/13/1/013012
1367-2630
URN:SI:UM:DK:IHZTLYNS
New_Journal_of_Physics_2011_Gosak,_Korosak,_Marhl_Topologically_determined_optimal_stochastic_resonance_responses_of_spatially_embedded.pdf
New_Journal_of_Physics_2011_Gosak,_Korosak,_Marhl_Topologically_determined_optimal_stochastic_resonance_responses_of_spatially_embedded.pdf
https://dk.um.si/Dokument.php?lang=slv&id=113464
http://stacks.iop.org/1367-2630/13/i=1/a=013012?key=crossref.5cd62d33d20126c6b370b6b9cef1a5f5
https://dk.um.si/Dokument.php?lang=slv&id=46242
Fakulteta za naravoslovje in matematiko