Stabilizing semilocal strings by polarization

被引：5

作者：

Eto, Minoru ^{[1
]}

Nitta, Muneto ^{[2
,3
]}

Sakurai, Kohei ^{[1
]}

机构：

[1] Yamagata Univ, Dept Phys, Yamagata 9908560, Japan

[2] Keio Univ, Dept Phys, Hiyoshi 4-1-1, Yokohama, Kanagawa 2238521, Japan

[3] Keio Univ, Res & Educ Ctr Nat Sci, Hiyoshi 4-1-1, Yokohama, Kanagawa 2238521, Japan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 10期

基金：

日本学术振兴会;

关键词：

Solitons Monopoles and Instantons; Gauge Symmetry; Global Symmetries; BOGOMOLNYI SOLITONS; PHASE; VORTICES; SUPERCONDUCTORS; MODEL; FLUX;

D O I：

10.1007/JHEP10(2016)048

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：27

共 59 条

[21] Vortex graphs as N-omers and CPN-1 skyrmions in N-component Bose-Einstein condensates [J].