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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Adding connections can hinder network synchronization of time-delayed oscillators

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Author(s):
Hart, Joseph D. [1, 2] ; Pade, Jan Philipp [3] ; Pereira, Tiago [4, 5] ; Murphy, Thomas E. [2, 6] ; Roy, Rajarshi [7, 1, 2]
Total Authors: 5
Affiliation:
[1] Univ Maryland, Dept Phys, College Pk, MD 20742 - USA
[2] Univ Maryland, Inst Res Elect & Appl Phys, College Pk, MD 20742 - USA
[3] Humboldt Univ, Inst Math, D-10099 Berlin - Germany
[4] Univ London Imperial Coll Sci Technol & Med, Dept Math, London SW7 2AZ - England
[5] Univ Sao Paulo, Inst Ciencias Matemat & Comp, BR-13560970 Sao Carlos, SP - Brazil
[6] Univ Maryland, Dept Elect & Comp Engn, College Pk, MD 20742 - USA
[7] Univ Maryland, Inst Phys Sci & Technol, College Pk, MD 20742 - USA
Total Affiliations: 7
Document type: Journal article
Source: Physical Review E; v. 92, n. 2 AUG 10 2015.
Web of Science Citations: 11
Abstract

We provide experimental evidence that adding links to a network's structure can hinder synchronization. Our experiments and theoretical analysis of networks of time-delayed optoelectronic oscillators uncover the scenario of loss of identical synchronization upon connectivity modifications. This counterintuitive loss of synchronization can occur even when the network structure is improved from a connectivity perspective. Utilizing a master stability function approach, we show that a time delay in the coupling of nodes plays a crucial role in determining a network's synchronization properties and that this effect is more prominent in directed networks than in undirected networks, especially for large networks. Our results provide insight into the impact of structural modifications in networks with equal coupling delays and open the path to design changes to the network connectivity to sustain and control the performance of real-world networks. (AU)

FAPESP's process: 11/50151-0 - Dynamical phenomena in complex networks: fundamentals and applications
Grantee:Elbert Einstein Nehrer Macau
Support type: Research Projects - Thematic Grants