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arXiv · 2605.23545

Compact structures in impurity-doped vacuumless systems

I. Andrade·D. Bazeia·M. A. Marques·R. Menezes
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Abstract

We investigate novel structures which arise from the compactification of vacuumless kinks in scalar field models coupled to impurities that preserve half the BPS sectors, described by first-order equations. We also investigate the behavior of the energy density and linear stability of the solutions. We show that compact vacuumless kinks cannot be obtained in impurity-free canonical models. By considering two distinct impurities, we study the conditions needed to induce compactification. In this scenario, stable half-compact or compact solutions are shown to emerge from the systems.

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I. Andrade, D. Bazeia, M. A. Marques, R. Menezes. 2026-05-22. Compact structures in impurity-doped vacuumless systems. https://doi.org/10.1016/j.chaos.2026.117863

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