arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1804.04822hep-ph
收藏

无标度超对称$SU(4)_{c}\times{SU(2)_{L}\times{SU(2)_{R}}}$模型的暴胀

Inflation from a No-scale supersymmetric $SU(4)_{c}\times{SU(2)_{L}\times{SU(2)_{R}}}$ model

Waqas Ahmed, Athanasios Karozas

摘要:

我们研究了在无标度超引力背景下产生的势驱动的超对称Pati-Salam模型中的暴胀。Pati-Salam规范群$SU(4)_{c}\times{SU(2)_{L}\times{SU(2)_{R}}}$补充了$Z_{2} $对称性。通过$SU(4)$伴随的自发破缺导致左右对称群。然后,$SU(2)_{R}$在中间尺度上断裂,并且膨胀子是$SU(2)_{R}$双峰的中性分量的组合。我们讨论了各种限制的参数空间,我们表明,一致的解决方案与宇宙学数据的光谱指数$n_{s}$和张量标量比r的模型的参数空间的范围很广。关于后者,这是一个典型的测量原始重力波,我们发现,$r\sim{10^{-3}-10^{-2}}$。另一种可能性的伴随标量场$S$的作用的暴胀子进行了讨论。

英文摘要:

We study inflation in a supersymmetric Pati-Salam model driven by a potential generated in the context of no-scale supergravity. The Pati-Salam gauge group $SU(4)_{c}\times{SU(2)_{L}\times{SU(2)_{R}}}$ , is supplemented with a $Z_{2} $ symmetry. Spontaneous breaking via the $SU(4)$ adjoint leads to the left-right symmetric group. Then the $SU(2)_{R}$ breaks at an intermediate scale and the inflaton is a combination of the neutral components of the $SU(2)_{R}$ doublets. We discuss various limits of the parameter space and we show that consistent solutions with the cosmological data for the a spectral index $n_{s}$ and the tensor-to-scalar ratio r are found for a wide range of the parameter space of the model. Regarding the latter, which is a canonical measure of primordial gravity waves, we find that $r\sim{10^{-3}-10^{-2}}$. An alternative possibility where the adjoint scalar field $S$ has the role of the inflaton is also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑