Violation of slow-roll in nonminimal inflation

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