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arXiv 1406.0639hep-thastro-ph.CO
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3+1维中的膨胀拓扑亏损及其嵌入

Dilatonic Topological Defects in 3+1 Dimensions and their Embeddings

Nikos Platis, Ioannis Antoniou, Leandros Perivolaropoulos

摘要:

我们认为拉格朗日在3+1维承认拓扑缺陷,有一个额外的耦合之间的缺陷标量场$Φ$和规范场动力学项(如$B(\vert Φ\vert^2) F_{μν}F^{μν}$)。这种{ \it声子}耦合在静态缺陷的情况下,诱导空间依赖的有效规范电荷和有效质量的标量场,这导致修改的缺陷核心的属性。特别是,核心的规模得到修改,而相应的嵌入式缺陷的稳定性也受到影响。这些修改说明规范(尼尔森-奥尔森)涡流和规范('t Hooft-Polyakov)单极。在外加规范场的情况下,研究了相应的声子整体缺陷。

英文摘要:

We consider Lagrangians in 3+1 dimensions admitting topological defects where there is an additional coupling between the defect scalar field $Φ$ and the gauge field kinetic term (eg $B(\vert Φ\vert^2) F_{μν}F^{μν}$). Such a {\it dilatonic} coupling in the context of a static defect, induces a spatially dependent effective gauge charge and effective mass for the scalar field which leads to modified properties of the defect core. In particular, the scale of the core gets modified while the stability properties of the corresponding embedded defects are also affected. These modifications are illustrated for gauged (Nielsen-Olesen) vortices and for gauged ('t Hooft-Polyakov) monopoles. The corresponding dilatonic global defects are also studied in the presence of an external gauge field.

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