Off-equilibrium Langevin dynamics of the discrete nonlinear Schrödinger chain

S. Iubini, S. Lepri, R. Livi, A. Politi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

We introduce suitable Langevin thermostats which are able to control both the temperature and the chemical potential of a one-dimensional lattice of nonlinear Schrödinger oscillators. The resulting nonequilibrium stationary states are then investigated in the limit of low temperatures and large particle densities, where the dynamics can be mapped onto that of a coupled-rotor chain with an external torque. As a result, an effective kinetic definition of temperature can be introduced and compared with the general microcanonical (global) definition.

Original languageEnglish
Article numberP08017
Pages (from-to)1-19
Number of pages19
JournalJournal of statistical mechanics-Theory and experiment
Volume2013
Issue number8
DOIs
Publication statusPublished - 30 Aug 2013

Fingerprint

Langevin Dynamics
Stationary Nonequilibrium States
Thermostat
thermostats
Nonlinear Oscillator
Chemical Potential
Rotor
rotors
Torque
torque
Kinetics
oscillators
temperature
kinetics
Temperature
Dynamic equilibrium

Keywords

  • transport processes/heat transfer (theory)

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistical and Nonlinear Physics
  • Statistics, Probability and Uncertainty

Cite this

Off-equilibrium Langevin dynamics of the discrete nonlinear Schrödinger chain. / Iubini, S.; Lepri, S.; Livi, R.; Politi, A.

In: Journal of statistical mechanics-Theory and experiment, Vol. 2013, No. 8, P08017, 30.08.2013, p. 1-19.

Research output: Contribution to journalArticle

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