Cosmological constraints on $\Lambda (\alpha )$CDM models with time-varying fine structure constant

Jin-Jun Zhang, Lu Yin, Chao-Qiang Geng

We study the $\Lambda (\alpha )$CDM models with $\Lambda (\alpha )$ being a function of the time-varying fine structure constant $\alpha$. We give a close look at the constraints on two specific $\Lambda (\alpha )$CDM models…