In the non-homogeneous φ⁴ model, standard effective kink descriptions match field results well, but half-kink descriptions require a modified effective model to reproduce the full field-theory propagation speeds and profiles over a broad parameter range.
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Front propagation in non-homogeneous $\phi^4$ model
In the non-homogeneous φ⁴ model, standard effective kink descriptions match field results well, but half-kink descriptions require a modified effective model to reproduce the full field-theory propagation speeds and profiles over a broad parameter range.