Collective Coordinates in One-Dimensional Soliton Models Revisited

Abstract

We compare numerical solutions to the full field equations to simplified approaches based on implementing three collective coordinates for kink-antikink interactions within the ${\phi }^4$ and ${\varphi }^6$ models in one time and one space dimensions. We particularly pursue the question whether the collective coordinate approximation substantiates the conjecture that vibrational modes are important for resonance structures to occur in kink-antikink scattering.

arXiv comment12 pages, Phys. Rev. D, in print, minor changes to match proof-read version

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