Repositório Digital

A- A A+

Nonequilibrium scaling explorations on a two-dimensional Z(5)-symmetric model

.

Nonequilibrium scaling explorations on a two-dimensional Z(5)-symmetric model

Mostrar registro completo

Estatísticas

Título Nonequilibrium scaling explorations on a two-dimensional Z(5)-symmetric model
Autor Silva, Roberto da
Fernandes, Henrique Almeida
Felício, José Roberto Drugovich de
Abstract We have investigated the dynamic critical behavior of the two-dimensional Z(5)-symmetric spin model by using short-time Monte Carlo (MC) simulations. We have obtained estimates of some critical points in its rich phase diagram and included, among the usual critical lines the study of first-order (weak) transition by looking into the order-disorder phase transition. In addition, we also investigated the soft-disorder phase transition by considering empiric methods. A study of the behavior of β/νz along the self-dual critical line has been performed and special attention has been devoted to the critical bifurcation point, or Fateev-Zamolodchikov (FZ) point. First, by using a refinement method and taking into account simulations out of equilibrium, we were able to localize parameters of this point. In a second part of our study, we turned our attention to the behavior of the model at the early stage of its time evolution in order to find the dynamic critical exponent z as well as the static critical exponents β and ν of the FZ point on square lattices. The values of the static critical exponents and parameters are in good agreement with the exact results, and the dynamic critical exponent z ≈ 2.28 very close to the four-state Potts model (z ≈ 2.29).
Contido em Physical review. E, Statistical, nonlinear, and soft matter physics. Vol. 90, no. 4 (Oct. 2014), 042101, 10 p.
Assunto Bifurcação
Mecânica estatística
Método de Monte Carlo
Pontos criticos
Transformações de fase
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/107214
Arquivos Descrição Formato
000940945.pdf (632.3Kb) Texto completo (inglês) Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.