Different effects of the Lorentz and Gaussian bump functions on the formation of primordial black holes and secondary gravitational waves

Wei Yang, Yu-Xuan Kang, Arshad Ali +3

Scalar perturbations in the inflation can be amplified when the base inflation potential $V_b(\varphi )$ incorporates a local bump $f(\varphi )$ such as $V(\varphi )=V_b(\varphi )(1+f(\varphi ))$. This modification…