Non-Abelian vortices with a twist

P. Forgács, Árpád Lukács, Fidel A. Schaposnik

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Non-Abelian flux-tube (string) solutions carrying global currents are found in the bosonic sector of four-dimensional N=2 supersymmetric gauge theories. The specific model considered here possesses U(2)local×SU(2)global symmetry, with two scalar doublets in the fundamental representation of SU(2). We construct string solutions that are stationary and translationally symmetric along the x3 direction, and they are characterized by a matrix phase between the two doublets, referred to as "twist." Consequently, twisted strings have nonzero (global) charge, momentum, and in some cases even angular momentum per unit length. The planar cross section of a twisted string corresponds to a rotationally symmetric, charged non-Abelian vortex, satisfying first-order Bogomolny-type equations and second-order Gauss constraints. Interestingly, depending on the nature of the matrix phase, some of these solutions even break cylindrical symmetry in R3. Although twisted vortices have higher energy than the untwisted ones, they are expected to be linearly stable since one can keep their charge (or twist) fixed with respect to small perturbations.

Original languageEnglish
Article number125001
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Issue number12
DOIs
Publication statusPublished - Jun 2 2015

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strings
vortices
symmetry
matrices
gauge theory
sectors
angular momentum
scalars
tubes
momentum
perturbation
cross sections
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Non-Abelian vortices with a twist. / Forgács, P.; Lukács, Árpád; Schaposnik, Fidel A.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 91, No. 12, 125001, 02.06.2015.

Research output: Contribution to journalArticle

Forgács, P. ; Lukács, Árpád ; Schaposnik, Fidel A. / Non-Abelian vortices with a twist. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 ; Vol. 91, No. 12.
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