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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Amplified response in coupled chaotic oscillators by induced heterogeneity

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Autor(es):
Padmanaban, E. [1] ; Saha, Suman [1] ; Vigneshwaran, M. [1] ; Dana, Syamal K. [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Indian Inst Chem Biol, CSIR, Kolkata 700032 - India
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Physical Review E; v. 92, n. 6 DEC 17 2015.
Citações Web of Science: 3
Resumo

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)

Processo FAPESP: 11/11973-4 - ICTP Instituto Sul-Americano para Pesquisa Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático