Coupling of stationary nonlinear modes in an electrical lattice

We discuss the coupling of stationary nonlinear excitations in an electrical lattice. Due to nonlinear interaction between the modes, we show within a quasi-discrete multiple scale approach that the physics of the network is described by two coupled nonlinear Schrödinger equations. Therefore, a novel class of lattice soliton is derived in the form of a coupled kink-soliton pair. Moreover, analytical results are checked by computer experiments.

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