Journal article
Robustness of inflation to large tensor perturbations
- Abstract:
- Extending our previous work on the robustness of inflation to perturbations in the scalar field, we investigate the effects of perturbations in the transverse traceless part of the extrinsic curvature on the evolution of an inhomogeneous inflaton field. Focusing on small field models, we show that these additional metric inhomogeneities initially reduce the total number of e-folds as the amplitude increases, but that the reduction saturates and even reverses above a certain amplitude. We present an argument that this is due to the presence of a large initial Hubble friction when metric perturbations are large.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
Actions
Access Document
- Files:
-
-
(Preview, Accepted manuscript, pdf, 1013.5KB, Terms of use)
-
- Publisher copy:
- 10.1088/1475-7516/2018/05/065
Authors
- Publisher:
- IOP Publishing
- Journal:
- Journal of Cosmology and Astroparticle Physics More from this journal
- Volume:
- 2018
- Issue:
- 5
- Pages:
- 065-065
- Publication date:
- 2018-05-29
- Acceptance date:
- 2018-05-16
- DOI:
- ISSN:
-
1475-7516
- Keywords:
- Pubs id:
-
pubs:942609
- UUID:
-
uuid:9a399326-844b-4d64-9faa-49808fe0b66e
- Local pid:
-
pubs:942609
- Source identifiers:
-
942609
- Deposit date:
-
2018-11-15
Terms of use
- Copyright holder:
- IOP Publishing Ltd and Sissa Medialab
- Copyright date:
- 2018
- Notes:
- Copyright © 2018 IOP Publishing Ltd and Sissa Medialab. This is the accepted manuscript version of the article. The final version is available online from IOP Publishing at: https://doi.org/10.1088/1475-7516/2018/05/065
If you are the owner of this record, you can report an update to it here: Report update to this record