Busca avançada
Ano de início
Entree
(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.)

Chimeralike states in a network of oscillators under attractive and repulsive global coupling

Texto completo
Autor(es):
Mishra, Arindam [1, 2] ; Hens, Chittaranjan [3] ; Bose, Mridul [1] ; Roy, Prodyot K. [4] ; Dana, Syamal K. [2]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] Jadavpur Univ, Dept Phys, Kolkata 700032 - India
[2] CSIR, Indian Inst Chem Biol, Kolkata 700032 - India
[3] Bar Ilan Univ, Dept Math, IL-529002 Ramat Gan - Israel
[4] Presidency Univ, Dept Math, Kolkata 700073 - India
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: Physical Review E; v. 92, n. 6 DEC 22 2015.
Citações Web of Science: 32
Resumo

We report chimeralike states in an ensemble of oscillators using a type of global coupling consisting of two components: attractive and repulsive mean-field feedback. We identify the existence of two types of chimeralike states in a bistable Lienard system; in one type, both the coherent and the incoherent populations are in chaotic states (which we refer to as chaos-chaos chimeralike states) and, in another type, the incoherent population is in periodic state while the coherent population has irregular small oscillation. We find a metastable state in a parameter regime of the Lienard system where the coherent and noncoherent states migrate in time from one to another subpopulation. The relative size of the incoherent subpopulation, in the chimeralike states, remains almost stable with increasing size of the network. The generality of the coupling configuration in the origin of the chimeralike states is tested, using a second example of bistable system, the van der Pol-Duffing oscillator where the chimeralike states emerge as weakly chaotic in the coherent subpopulation and chaotic in the incoherent subpopulation. Furthermore, we apply the coupling, in a simplified form, to form a network of the chaotic Rossler system where both the noncoherent and the coherent subpopulations show chaotic dynamics. (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