Hamiltonian dynamics reveals the existence of quasistationary states for long-range systems in contact with a reservoir.
We introduce a Hamiltonian dynamics for the description of long-range interacting systems in contact with a thermal bath (i.e., in the canonical ensemble). The dynamics confirms statistical mechanics equilibrium predictions for the Hamiltonian mean field model and the equilibrium ensemble equivalence. We find that long-lasting quasistationary states persist in the presence of the interaction with the environment. Our results indicate that quasistationary states are indeed reproducible in real physical experiments.
Baldovin
Fulvio
F
Dipartimento di Fisica and Sezione INFN, Università di Padova, Via Marzolo 8, I-35131 Padova, Italy. baldovin@pd.infn.it
Orlandini
Enzo
E