Violation of slow-roll in non-minimal inflation
  We show that a non-minimal coupling to gravity can not only make some
inflationary models consistent with cosmological data, similar to the case of
Higgs inflation, but can also invoke slow-roll violation to realize graceful
exit from inflation. In particular, this is the case in models where a
destabilizing mechanism that ends inflation should be assumed when the model is
minimally coupled to gravity. As explicit examples, we consider the power-law
and inverse monomial inflation models with a non-minimal coupling to gravity.
While these models are excluded in the minimally coupled case, we show that
they can become viable again in non-minimally coupled scenarios. In most
scenarios we considered, reheating can be naturally realized via gravitational
particle production but that this depends on the underlying theory of gravity
in a non-trivial way.
