Abstract
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) |
|---|---|
| Article number | 044041 |
| Journal | Physical Review D |
| Volume | 96 |
| Issue number | 4 |
| DOIs | |
| State | Published - Aug 15 2017 |
Bibliographical note
Funding 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.
Publisher Copyright:
© 2017 American Physical Society.