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<p>This study deals with a piecewise <i>ϕ</i><sup>2</sup> scalar field theory in (1 + 1) dimensions. The scalar field potential is designed with a triple-well shape, engendering kink solutions with asymmetric square-well linearized potentials. Thus, the localized and delocalized modes in this model can be obtained analytically in terms of transcendental equations. This allows us to explore kink-antikink and antikink-kink collisions with any desired number of localized and delocalized modes. We obtain new scenarios of resonance windows suppression, shedding light on the role of higher excited modes in kink scattering.</p>

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On the localized and delocalized modes in kink-antikink interactions: a toy model

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月2日

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  • Carlos E. S. Santos,
  • João G. F. Campos,
  • Azadeh Mohammadi

摘要

This study deals with a piecewise ϕ2 scalar field theory in (1 + 1) dimensions. The scalar field potential is designed with a triple-well shape, engendering kink solutions with asymmetric square-well linearized potentials. Thus, the localized and delocalized modes in this model can be obtained analytically in terms of transcendental equations. This allows us to explore kink-antikink and antikink-kink collisions with any desired number of localized and delocalized modes. We obtain new scenarios of resonance windows suppression, shedding light on the role of higher excited modes in kink scattering.