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Special Bäcklund transformations and nonlinear superpositions for the non-integrable 4 field model. (English) Zbl 1092.81047

In this paper, the exact solution of the well-known \((N+1)\)-dimensional scalar field \(\phi^4\) model is studied by means of the special Bäcklund transformation and nonlinear superpositions. Some new type of exact solutions such as the conoid periodic-periodic interaction waves and the periodic solitary wave interaction solutions are explicitly given.

MSC:

81T10 Model quantum field theories
35Q55 NLS equations (nonlinear Schrödinger equations)
37K35 Lie-Bäcklund and other transformations for infinite-dimensional Hamiltonian and Lagrangian systems
81V15 Weak interaction in quantum theory
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