Fig. 5: Schematic of a sublattice-symmetric one-dimensional model.
From: Transition from the topological to the chaotic in the nonlinear Su–Schrieffer–Heeger model
The red and blue filled circles are the sites in this model. The color of each circle represents the sublattice (the red or blue dashed square) to which the site belongs. The lines between the circles show the nonlinear hopping between them. The hopping amplitudes are alternately determined by the matrices A and D, which depend on the nonlinear eigenvector Ψ.
