论文标题
具有两个高尺度最小的扩展单线标量模型的稳定性分析
The stability analysis of the extended singlet scalar model with two high scale minima
论文作者
论文摘要
我们使用真实的单线标量，类似矢量的单线和Doublet Fermions研究最简单的可行暗物质（DM）模型。与Fermion部门相关的Yukawa耦合对于通过冻结和冷冻机制获得当前DM遗物密度很重要。除了沿Higgs场的标准模型高尺度最小值外，我们还发现了沿Singlet标量场方向的其他高尺度最小值。另一个最小值是由于涉及量规部门，希格斯门户网站和新的Yukawa行业的耦合的重量法化组演变而出现的。使用不同相图进行了对识别电动真空稳定性区域的参数空间和沿标量场不同方向的亚稳定性区域的详细研究。
We study the simplest viable dark matter (DM) model with a real singlet scalar, vector-like singlet, and doublet fermions. The Yukawa couplings associated with the fermion sector are important in obtaining the current DM relic density through Freeze-out and Freeze-in mechanisms. In addition to the standard model-like high scale minima along the Higgs field, we find other high scale minima along the singlet scalar field direction. The other minima appears due to the renormalisation group evolutions of the couplings involving the gauge sector, Higgs portal, and the new Yukawa sector. A detailed study of the parameter space identifying the region of electroweak vacuum stability and metastability along different directions of the scalar field is carried out using different phase diagrams.
