Dynamics and nonequilibrium states in the Hamiltonian mean-field model: a closer look.
Phys Rev E Stat Nonlin Soft Matter Phys
; 67(3 Pt 1): 031105, 2003 Mar.
Article
em En
| MEDLINE
| ID: mdl-12689053
ABSTRACT
We critically revisit the evidence for the existence of quasistationary states in the globally coupled XY (or Hamiltonian mean-field) model. A slow-relaxation regime at long times is clearly revealed by numerical realizations of the model, but no traces of quasistationarity are found during the earlier stages of the evolution. We point out the nonergodic properties of this system in the short-time range, which makes a standard statistical description unsuitable. New aspects of the evolution during the nonergodic regime, and of the energy distribution function in the final approach to equilibrium, are disclosed.
Buscar no Google
Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2003
Tipo de documento:
Article