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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.)

Amplified response in coupled chaotic oscillators by induced heterogeneity

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Author(s):
Padmanaban, E. [1] ; Saha, Suman [1] ; Vigneshwaran, M. [1] ; Dana, Syamal K. [1]
Total Authors: 4
Affiliation:
[1] Indian Inst Chem Biol, CSIR, Kolkata 700032 - India
Total Affiliations: 1
Document type: Journal article
Source: Physical Review E; v. 92, n. 6 DEC 17 2015.
Web of Science Citations: 3
Abstract

The phenomenon of emergent amplified response is reported in two unidirectionally coupled identical chaotic systems when heterogeneity as a parameter mismatch is introduced in a state of complete synchrony. The amplified response emerges from the interplay of heterogeneity and a type of cross-feedback coupling. It is reflected as an expansion of the response attractor in some directions in the state space of the coupled system. The synchronization manifold is simply rotated by the parameter detuning while its stability in the transverse direction is still maintained. The amplification factor is linearly related to the amount of parameter detuning. The phenomenon is elaborated with examples of the paradigmatic Lorenz system, the Shimizu-Morioka single-mode laser model, the Rossler system, and a Sprott system. Experimental evidence of the phenomenon is obtained in an electronic circuit. The method may provide an engineering tool for distortion-free amplification of chaotic signals. (AU)

FAPESP's process: 11/11973-4 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics
Grantee:Nathan Jacob Berkovits
Support type: Research Projects - Thematic Grants