Nonequilibrium discrete nonlinear Schrödinger equation (Articolo in rivista)

Type
Label
  • Nonequilibrium discrete nonlinear Schrödinger equation (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevE.86.011108 (literal)
Alternative label
  • Stefano Iubini (1,2); Stefano Lepri (1); Antonio Politi (3,1) (2012)
    Nonequilibrium discrete nonlinear Schrödinger equation
    in Physical review. E, Statistical, nonlinear, and soft matter physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Stefano Iubini (1,2); Stefano Lepri (1); Antonio Politi (3,1) (literal)
Pagina inizio
  • 011108 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy 2) Dipartimento di Fisica e Astronomia, Universita di Firenze and INFN Sezione di Firenze, via Sansone 1, I-50019 Sesto Fiorentino, Italy 3) Institute for Complex Systems and Mathematical Biology & SUPA University of Aberdeen, Aberdeen AB24 3UE, United Kingdom (literal)
Titolo
  • Nonequilibrium discrete nonlinear Schrödinger equation (literal)
Abstract
  • We study nonequilibrium steady states of the one-dimensional discrete nonlinear Schrödinger equation. This system can be regarded as a minimal model for the stationary transport of bosonic particles such as photons in layered media or cold atoms in deep optical traps. Due to the presence of two conserved quantities, namely, energy and norm (or number of particles), the model displays coupled transport in the sense of linear irreversible thermodynamics. Monte Carlo thermostats are implemented to impose a given temperature and chemical potential at the chain ends. As a result, we find that the Onsager coefficients are finite in the thermodynamic limit, i.e., transport is normal. Depending on the position in the parameter space, the \"Seebeck coefficient\" may be either positive or negative. For large differences between the thermostat parameters, density and temperature profiles may display an unusual nonmonotonic shape. This is due to the strong dependence of the Onsager coefficients on the state variables. (literal)
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