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Title: Thermalization in a one-dimensional integrable system

We present numerical results demonstrating the possibility of thermalization of single-particle observables in a one-dimensional system, which is integrable in both the quantum and classical (mean-field) descriptions (a quasicondensate of ultracold, weakly interacting bosonic atoms are studied as a definite example). We find that certain initial conditions admit the relaxation of single-particle observables to the equilibrium state reasonably close to that corresponding to the Bose-Einstein thermal distribution of Bogoliubov quasiparticles.
Authors:
 [1] ;  [1] ;  [2]
  1. Vienna Center for Quantum Science and Technology, Atominstitut, TU Wien, A-1020 Vienna (Austria)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22095436
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 84; Journal Issue: 5; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; ENERGY LEVELS; EQUILIBRIUM; INTEGRAL CALCULUS; MEAN-FIELD THEORY; ONE-DIMENSIONAL CALCULATIONS; QUASI PARTICLES; RELAXATION; THERMALIZATION