Primordial black holes and scalar-induced gravitational waves from the generalized Brans-Dicke theory

Zhu Yi

The power spectrum of the scalar-tensor inflation with a quadratic form Ricci scalar coupling function $\Omega (\varphi )=1-2\varphi /{\varphi }_c+(1+{\delta }^2)(\varphi /{\varphi }_c{)}^2$ can be enhanced enough to produce primordia…