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Hamiltonian dynamics reveals the existence of quasi-stationary states for long-range systems in contact with a reservoir

Fulvio Baldovin, Enzo Orlandini

Published 2006-03-14, updated 2006-09-13Version 2

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 quasi-stationary states persist in presence of the interaction with the environment. Our results indicate that quasi-stationary states are indeed reproducible in real physical experiments.

Comments: Title changed, throughout revision of the text
Journal: Phys. Rev. Lett. {\bf 96}, 240602 (2006)
Categories: cond-mat.stat-mech
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