Journal article
The effects of potential shape on inhomogeneous inflation
- Abstract:
- We study the robustness of single-field inflation against inhomogeneities. We derive a simple analytic criterion on the shape of the potential for successful inflation in the presence of inhomogeneities, and demonstrate its validity using full 3+1 dimensional numerical relativity simulations on several classes of popular models of single-field inflation. We find that models with convex potentials are more robust to inhomogeneities than those with concave potentials, and that concave potentials that vary on super-Planckian scales are significantly more robust than those that vary on sub-Planckian scales.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Accepted manuscript, 1.3MB, Terms of use)
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- Publisher copy:
- 10.1088/1475-7516/2020/05/030
Authors
- Publisher:
- IOP Publishing
- Journal:
- Journal of Cosmology and Astroparticle Physics More from this journal
- Volume:
- 2020
- Issue:
- 5
- Article number:
- 030
- Publication date:
- 2020-05-15
- Acceptance date:
- 2020-04-04
- DOI:
- EISSN:
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1475-7516
- Language:
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English
- Keywords:
- Pubs id:
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1113618
- Local pid:
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pubs:1113618
- Deposit date:
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2021-03-11
Terms of use
- Copyright holder:
- IOP Press and Sissa Medialab.
- Copyright date:
- 2020
- Rights statement:
- © 2020 IOP Publishing Ltd and Sissa Medialab
- Notes:
- This is the accepted manuscript version of the article. The final version is available from IOP Science at: https://doi.org/10.1088/1475-7516/2020/05/030
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