Stabilizing semilocal strings by polarization

Minoru Eto, Muneto Nitta, Kohei Sakurai

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number48
JournalJournal of High Energy Physics
Volume2016
Issue number10
DOIs
Publication statusPublished - 2016 Oct 1

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strings
vortices
polarization
scalars
symmetry
phase diagrams
expansion
molecules

Keywords

  • Gauge Symmetry
  • Global Symmetries
  • Solitons Monopoles and Instantons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Stabilizing semilocal strings by polarization. / Eto, Minoru; Nitta, Muneto; Sakurai, Kohei.

In: Journal of High Energy Physics, Vol. 2016, No. 10, 48, 01.10.2016.

Research output: Contribution to journalArticle

Eto, Minoru ; Nitta, Muneto ; Sakurai, Kohei. / Stabilizing semilocal strings by polarization. In: Journal of High Energy Physics. 2016 ; Vol. 2016, No. 10.
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