Abstract
We study a class of noncanonical real scalar field models in (1 + 1)-dimensional flat space-time. We first derive the general criterion for the classical linear stability of an arbitrary static soliton solution of these models. Then we construct first-order formalisms for some typical models and derive the corresponding kink solutions. The linear structures of these solutions are also qualitatively analyzed and compared with the canonical kink solutions.
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Zhong, Y., Liu, YX. K-field kinks: stability, exact solutions and new features. J. High Energ. Phys. 2014, 41 (2014). https://doi.org/10.1007/JHEP10(2014)041
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DOI: https://doi.org/10.1007/JHEP10(2014)041