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Robustness of inflation to inhomogeneous initial conditions

Abstract:

We consider the effects of inhomogeneous initial conditions in both the scalar field profile and the extrinsic curvature on different inflationary models. In particular, we compare the robustness of small field inflation to that of large field inflation, using numerical simulations with Einstein gravity in 3+1 dimensions. We find that small field inflation can fail in the presence of subdominant gradient energies, suggesting that it is much less robust to inhomogeneities than large field infl...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1088/1475-7516/2017/09/025

Authors


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Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics
Subgroup:
Astrophysics
Dinunno, BS More by this author
Fischler, W More by this author
Flauger, R More by this author
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Publisher:
IOP Publishing Publisher's website
Journal:
Journal of Cosmology and Astroparticle Physics Journal website
Volume:
2017
Issue:
9
Pages:
025-025
Publication date:
2017-09-18
Acceptance date:
2017-08-12
DOI:
ISSN:
1475-7516
Pubs id:
pubs:942607
URN:
uri:9f5dfe95-0e54-4990-a4b9-3510690bd289
UUID:
uuid:9f5dfe95-0e54-4990-a4b9-3510690bd289
Local pid:
pubs:942607

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