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Kinky vortons in the 2HDM

Richard A. Battye*, Steven J. Cotterill†, and Adam K. Thomasson‡

  • *Contact author: richard.battye@manchester.ac.uk
  • †Contact author: steven.cotterill@manchester.ac.uk
  • ‡Contact author: adam.thomasson@manchester.ac.uk
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Phys. Rev. D 113, 115035 – Published 15 June, 2026

DOI: https://doi.org/10.1103/yf92-llgw

Abstract

We construct and analyse two-dimensional, current-carrying ring solutions, known as kinky vortons, in the Z2-symmetric global two-Higgs-doublet model (2HDM). We demonstrate the existence of multiple dynamically stable configurations that persist under nonaxially symmetric perturbations. These solutions are described with high accuracy by the thin string approximation and elastic string formalism, which correctly capture both their equilibrium radii and dynamical oscillation frequencies. Kinky vortons in the Z2-symmetric theory establish the viability of vorton solutions in a phenomenologically motivated extension of the Standard Model, and should provide a computationally tractable proxy for vortons in the U(1)-symmetric 2HDM. In addition, we identify a composite domain wall configuration in which localized condensates are supported on secondary domain walls existing on a Z2 wall, suggesting a mechanism by which kinky-vorton-like defects could arise in a three-dimensional setting.

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Phys. Rev. D 113, 115035– Published 15 June, 2026
  • Received 24 March 2026
  • Accepted 22 May 2026
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