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Kink dynamics in a parametric ϕ6 system: a model with controllably many internal modes

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Kink dynamics in a parametric ϕ6 system: a model with controllably many internal modes
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27
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CC Attribution - NonCommercial - NoDerivatives 4.0 International:
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In the present work, we intend to explore a variant of the ϕ6 model originally proposed in \textit{Phys. Rev. D} \textbf{12}, 1606 (1975) as a prototypical, so-called, ``bag'' model where domain walls play the role of quarks within hadrons. We examine the prototypical steady state of the model, namely an apparent bound state of two kink structures. We explore its linearization and find that as a function of a prototypical parameter controlling the curvature of the potential an effectively arbitrary number of internal modes may arise in the point spectrum of the linearized analysis. We \textit{intend to} use Evans function analysis to predict the bifurcation points of the relevant internal modes and confirm these theoretical predictions numerically. Finally, given the remarkable flexibility of the model in possessing different numbers of internal modes we \textit{once again intend to} explore the dynamics of multi-bound-state collisions to identify the role of the additional internal modes in enhancing the complexity of the observed scattering scenarios. I. Christov, P. G. Kevrekidis, A. Saxena, and R. Decker are my collaborators.