We propose a new class of inflationary models in which inflation takes place while the inflaton is climbing up a potential hill due to a coupling to gravity. We study their attractor behavior, and investigate its relation with known attractors. We also discuss a possible realization of this type of models with natural inflation, and show that the inflationary predictions come well within the region consistent with the observation of the cosmic microwave background.
|Original language||English (US)|
|Journal||Physical Review D|
|State||Published - Aug 15 2017|
Bibliographical noteFunding Information:
This work was supported by Institute for Basic Science (Project code IBS-R018-D1). The authors are grateful to T. Terada for helpful comments.
© 2017 American Physical Society.