Collective effects induced by diversity in extended systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Toral, R (Autor) Outra; Tessone, CJ (Autor) Outra; Lopes, JV (Autor) Outra

Revista

Título: European Physical Journal: Special Topics

Vol. 143

Páginas: 59-67

ISSN: 1951-6355

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 30 Citações

Scopus - 30 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-004-ATE

DOI: 10.1140/epjst/e2007-00071-5

Abstract (EN): We show that diversity, in the form of quenched noise, can have a constructive effect in the dynamics of extended systems. We first consider a bistable phi(4) model composed by many coupled units and show that the global response to an external periodic forcing is enhanced under the presence of the right amount of diversity (measured as the dispersion in one of the parameters defining the model). As a second example, we consider a system of active-rotators and show that while they are at rest in the homogeneous case, the disorder introduced by the diversity suffices to trigger the appearance of common firings or pulses. Both effects require very simple ingredients and we expect the results presented here to be of interest in similar models.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9