$Sp(4,\mathbb{Z})$ modular inflation

Si-Yi Jiang, Wenbin Zhao, Gui-Jun Ding

We investigate inflation models governed by the Siegel modular group $Sp(4,\mathbb{Z})$. The $Sp(4,\mathbb{Z})$ group extends the $SL(2,\mathbb{Z})$ framework from one modulus to t…