Fractional vortices and lumps
Fractional vortices and lumps
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DOI：
10.1103/physrevd.80.045018
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发表时间：
2009-05
影响因子：
5
通讯作者：
M. Eto;T. Fujimori;S. B. Gudnason;K. Konishi;T. Nagashima;M. Nitta;K. Ohashi;W. Vinci
中科院分区：
文献类型：
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作者：
M. Eto;T. Fujimori;S. B. Gudnason;K. Konishi;T. Nagashima;M. Nitta;K. Ohashi;W. Vinci
我们从拓扑稳定性的角度研究了所谓的分数旋涡，即具有最小缠绕的旋涡构型，但在横向能量分布中具有各种显著的子结构。分数旋涡出现在希格斯模型的各种阿贝尔或非阿贝尔推广中。研究了它们的全局和局部特征，并确定了它们发生的两个关键因素-导致非平凡真空模M的真空简并和涡旋的BPS性质。分数涡进一步分为两类。第一类涡出现在M具有轨道Z_n奇点时；第二类发生在真空模空间M具有变形几何或某些奇点的系统中。用几个具体的模型说明了这些一般特征。
We study what might be called fractional vortices, vortex configurations with the minimum winding from the viewpoint of their topological stability, but which are characterized by various notable substructures in the transverse energy distribution. The fractional vortices occur in diverse Abelian or non-Abelian generalizations of the Higgs model. The global and local features characterizing these are studied, and we identify the two crucial ingredients for their occurrence - the vacuum degeneracy leading to non-trivial vacuum moduli M, and the BPS nature of the vortices. Fractional vortices are further classified into two kinds. The first type of such vortices appear when M has orbifold Z_n singularities; the second type occurs in systems in which the vacuum moduli space M possesses either a deformed geometry or some singularity. These general features are illustrated with several concrete models.