论文标题
两种Higgs Doublet模型中Nambu Monopole的拓扑结构 - 纤维束，Dirac的量化和Dyon-
Topological structure of Nambu monopole in Two Higgs doublet models -- Fiber bundle, Dirac's quantization and dyon --
论文作者
论文摘要
我们在两个Higgs Doublet模型（2HDM）中找到了Nambu单子的拓扑非平地结构，这是一个磁性单子，由两个相反侧面的两个拓扑稳定的$ z $ strings（$ z $ flux tubes）连接。该结构与标准模型（SM）中Nambu单极的拓扑琐事形成鲜明对比，后者是由单个非访问$ z $ string附加的。发现2HDM中的Nambu单子具有相同的纤维束结构，其纤维束结构与Hooft-Polyakov Monopole的纤维束结构以及Wu-Yang对Dirac Monopole的描述，这是因为电磁量规场在棘轮上既定不变，并且在Monamb上均具有良好的速度，因为它是在Monamb上，因为它是在Monamb上，因为它是在Monamb的范围内，因为它是毫无疑问的，因为它是在Monamb的范围内，因为它是毫无疑问的。 Electroweak仪表对称性在字符串的核心处恢复。因此，2HDM中的NAMBU单子可以被视为将'T Hooft-Polyakov Monopole嵌入到$ SU（2）_W $量规对称中，并且DIRAC的量化条件始终保持，这对于SM中的Nambu Monopole不存在。此外，我们构建了一个附着两个字符串的Dyon配置。
We find a topologically non-trivial structure of the Nambu monopole in two Higgs doublet model (2HDM), which is a magnetic monopole attached by two topologically stable $Z$ strings ($Z$ flux tubes) from two opposite sides. The structure is in sharp contrast to the topological triviality of the Nambu monopole in the standard model (SM), which is attached by a single non-topological $Z$ string. It is found that the Nambu monopole in 2HDM possesses the same fiber bundle structure with those of the `t Hooft-Polyakov monopole and the Wu-Yang description of the Dirac monopole, as a result of the fact that the electromagnetic gauge field is well-defined even inside the strings and is non-trivially fibered around the monopole, while the Nambu monopole in the SM is topologically trivial because electroweak gauge symmetry is restored at the core of the string. Consequently, the Nambu monopole in 2HDM can be regarded as an embedding of the 't Hooft-Polyakov monopole into the $SU(2)_W$ gauge symmetry, and the Dirac's quantization condition always holds, which is absent for the Nambu monopole in the SM. Furthermore, we construct a dyon configuration attached with the two strings.
