Constraining Galileon inflation

Donough Regan; Gemma J. Anderson; Matthew Hull; David Seery

doi:10.1088/1475-7516/2015/02/015

Constraining Galileon inflation

Donough Regan, Gemma J. Anderson, Matthew Hull, David Seery

University of Sussex

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Abstract

In this short paper, we present constraints on the Galileon inflationary model from the CMB bispectrum. We employ a principal-component analysis of the independent degrees of freedom constrained by data and apply this to the WMAP 9-year data to constrain the free parameters of the model. A simple Bayesian comparison establishes that support for the Galileon model from bispectrum data is at best weak.

Original language	English
Article number	015
Journal	Journal of Cosmology and Astroparticle Physics
Volume	2015
Issue number	2
DOIs	https://doi.org/10.1088/1475-7516/2015/02/015
Publication status	Published - 11 Feb 2015

Keywords

CMBR theory
inflation
non-gaussianity
RCUK
STFC
ST/L000652/1

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10.1088/1475-7516/2015/02/015

Constraining Galileon Inflation
This is an author-created, un-copyedited version of an article accepted for publication/published in Journal of Cosmology and Astroparticle Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/1475-7516/2015/02/015.
Accepted author manuscript (Post-print), 202 KB

http://arxiv.org/pdf/1411.4501v2

Cite this

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Constraining Galileon inflation

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Keywords

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