Breathers and Thermal Relaxation in Fermi-Pasta-Ulam Arrays
Ramon Reigada, Antonio Sarmiento, and Katja Lindenberg
TL;DR
This paper reviews how breathers in Fermi-Pasta-Ulam arrays relax over time, highlighting the influence of interactions, system dimensions, initial conditions, and parameters on their stability and longevity.
Contribution
It provides a comprehensive review of breather relaxation mechanisms in Fermi-Pasta-Ulam arrays, emphasizing the roles of various physical factors.
Findings
Relaxation channels vary with system parameters
Breather stability depends on interactions and dimensionality
Initial conditions significantly influence relaxation behavior
Abstract
Breather stability and longevity in thermally relaxing nonlinear arrays depend sensitively on their interactions with other excitations. We review 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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