In a Peierls-Nabarro-free discrete phi^4 model, phonon scattering off a kink exhibits lattice-spacing-dependent reflection and negative radiation pressure accelerating the kink toward incoming phonons due to resonances.
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A resonance in phonons scattering off a kink in the absence of a Peierls-Nabarro potential
In a Peierls-Nabarro-free discrete phi^4 model, phonon scattering off a kink exhibits lattice-spacing-dependent reflection and negative radiation pressure accelerating the kink toward incoming phonons due to resonances.