Scalar modes of polarization and speed of gravitational waves in $f(R)$ gravity

Utkal Keshari Dash, Bal Krishna Yadav, Murli Manohar Verma

We explore the gravitational waves (GWs) within the framework of the $f(R)$ gravity model represented by $f(R)=R^{1+\delta }/R_c^{\delta }$ in the weak field approximation. In this scenario, gra…