One-dimensional systems are under intense investigation, both from theoretical and experimental points ofview, since they have rather peculiar characteristics which are of both conceptual and technological interest.We analyze the dependence of the behavior of one-dimensional, time-reversal invariant, nonequilibrium systemson the parameters defining their microscopic dynamics. In particular, we consider chains of identical oscillatorsinteracting via hard-core elastic collisions and harmonic potentials, driven by boundary Nos´e-Hoover thermostats.Their behavior mirrors qualitatively that of stochastically driven systems, showing that anomalous properties aretypical of physics in one dimension. Chaos, by itself, does not lead to standard behavior, since it does not guaranteelocal thermodynamic equilibrium.Alinear relation is found between density fluctuations and temperature profiles.This link and the temporal asymmetry of fluctuations of the main observables are robust against modifications ofthermostat parameters and against perturbations of the dynamics.

Anomalies and absence of local equilibrium, and universality, in one-dimensional particles systems / Giberti, Claudio; L., Rondoni. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - STAMPA. - 83:(2011), pp. 041115-1-041115-14. [10.1103/PhysRevE.83.041115]

Anomalies and absence of local equilibrium, and universality, in one-dimensional particles systems

GIBERTI, Claudio;
2011

Abstract

One-dimensional systems are under intense investigation, both from theoretical and experimental points ofview, since they have rather peculiar characteristics which are of both conceptual and technological interest.We analyze the dependence of the behavior of one-dimensional, time-reversal invariant, nonequilibrium systemson the parameters defining their microscopic dynamics. In particular, we consider chains of identical oscillatorsinteracting via hard-core elastic collisions and harmonic potentials, driven by boundary Nos´e-Hoover thermostats.Their behavior mirrors qualitatively that of stochastically driven systems, showing that anomalous properties aretypical of physics in one dimension. Chaos, by itself, does not lead to standard behavior, since it does not guaranteelocal thermodynamic equilibrium.Alinear relation is found between density fluctuations and temperature profiles.This link and the temporal asymmetry of fluctuations of the main observables are robust against modifications ofthermostat parameters and against perturbations of the dynamics.
83
041115-1
041115-14
Anomalies and absence of local equilibrium, and universality, in one-dimensional particles systems / Giberti, Claudio; L., Rondoni. - In: PHYSICAL REVIEW E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS. - ISSN 1539-3755. - STAMPA. - 83:(2011), pp. 041115-1-041115-14. [10.1103/PhysRevE.83.041115]
Giberti, Claudio; L., Rondoni
File in questo prodotto:
File Dimensione Formato  
pubblicato.pdf

accesso aperto

Tipologia: Versione dell'editore (versione pubblicata)
Dimensione 799.45 kB
Formato Adobe PDF
799.45 kB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/649543
Citazioni
  • ???jsp.display-item.citation.pmc??? 1
  • Scopus 12
  • ???jsp.display-item.citation.isi??? 12
social impact