An update on single field models of inflation in light of WMAP7

Details An update on single field models of inflation in light of WMAP7 An update on single field models of inflation in light of WMAP7

2010-04-27

arxiv.org/abs/1004.4794v3

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

6 pages and 4 figures. This version updated to match the published version

Scientific paper

10.1088/1475-7516/2010/08/037

In this paper we summarise the status of single field models of inflation in light of the WMAP 7 data release. We find little has changed since the 5 year release, and results are consistent with previous findings. The increase in the upper bound on the running of the spectral index impacts on the status of the production of Primordial Black Holes from single field models. The lower bound on the equilateral configuration of the non-gaussianity parameter is reduced and thus the bounds on the theoretical parameters of (UV) DBI single brane models are weakened. In the case of multiple coincident branes the bounds are also weakened and the two, three or four brane cases will produce a tensor-signal that could possibly be observed in the future.

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