“Nonlinear Edge States in β-Fermi-Pasta-Ulam-Tsingou Dimer Lattice: Analytical and Numerical Study of Stability”

https://pubmed.ncbi.nlm.nih.gov/38115531

This study reveals the existence of various nonlinear edge states in a β-Fermi-Pasta-Ulam-Tsingou dimer lattice, primarily stemming from the gluing of Dirac soliton solutions to boundaries under different boundary conditions, with one type corresponding to the topological edge states observed in the linear limit, and examines their stability through analytical and numerical methods.