Breathers and thermal relaxation in Fermi-Pasta-Ulam arrays.

  title={Breathers and thermal relaxation in Fermi-Pasta-Ulam arrays.},
  author={Ramon Reigada and Antonio Sarmiento and Katja Lindenberg},
  volume={13 2},
Breather stability and longevity in thermally relaxing nonlinear arrays depend sensitively on their interactions with other excitations. We review numerical results for the relaxation of breathers in Fermi-Pasta-Ulam arrays, with a specific focus on the different relaxation channels and their dependence on the interparticle interactions, dimensionality, initial condition, and system parameters. 

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Nonequilibrium molecular dynamics simulations of heat flow in one-dimensional lattices

  • ZhangIsbisterEvans
  • Physics
    Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
  • 2000
It is shown that when the heat field strength is greater than a certain critical value, solitons can be generated in molecular dynamics simulations starting from random initial conditions and increases monotonically with the size of the system.