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Phys Rev E Stat Nonlin Soft Matter Phys
; 89(2): 022106, 2014 Feb.
Artículo
en Inglés
| MEDLINE
| ID: mdl-25353421
RESUMEN
The dynamics of the Hamiltonian mean-field model is studied in the context of continuous-time random walks. We show that the sojourn times in cells in the momentum space are well described by a one-sided truncated Lévy distribution. Consequently, the system is nonergodic for long observation times that diverge with the number of particles. Ergodicity is attained only after very long times both at thermodynamic equilibrium and at quasistationary out-of-equilibrium states.