  We investigate the formation of large peaks in the inflationary curvature
power spectrum from double-well potentials. In such scenarios, the initial CMB
spectrum is created at large field values. Subsequently, the inflaton will
cross one of the minima and will decelerate rapidly as it reaches the local
maximum at the origin, either falling back or crossing it. During this final
phase, a significant peak in the curvature power spectrum can be generated. Our
analysis reveals that this class of models produces more pronounced peaks than
the more commonly studied quasi-inflection point scenarios with less tuning for
the model parameters. Finally, we construct an explicit theoretically motivated
inflationary scenario that is consistent with the latest CMB observations and
capable of generating sufficiently large curvature perturbations for primordial
black holes.
