Superposed Hyperbolic Kink and Pulse Solutions of Coupled $ϕ^4$, NLS and MKdV Equations

We obtain novel solutions of a coupled $ϕ^4$, a coupled nonlinear Schrödinger (NLS) and a coupled modified Korteweg de Vries (MKdV) model which can be re-expressed as a linear superposition of either the sum or the difference of two hyperbolic kink or two hyperbolic pulse solutions. These results demonstrate that the notion of superposed solutions extends to coupled nonlinear equations as well.

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