Stabilizing semilocal strings by polarization

Minoru Eto, Muneto Nitta, Kohei Sakurai

研究成果: Article査読

抄録

Semilocal strings are vortices in the extended Abelian-Higgs model with two complex Higgs scalar fields among which a global SU(2) symmetry acts. They are known to be stable (unstable against expansion) in type-I (II) superconductors, in which gauge field is heavier (lighter) than the Higgs scalar field. In this paper, we find that vortices can be stabilized in the whole parameter region including the type-II region by adding a potential term breaking the SU(2) symmetry. We construct numerical solutions in various parameters and determine the vortex phase diagram consisting of six phases. In two phases, a vortex is polarized, that is, split into two half-quantized vortices with a certain distance, to form a vortex molecule, while in the rests a vortex is identical to the conventional Abrikosov-Nielsen-Olesen vortex.

本文言語English
論文番号48
ジャーナルJournal of High Energy Physics
2016
10
DOI
出版ステータスPublished - 2016 10 1

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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