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Title: Constraining Galileon inflation

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.

Authors:
; ; ;  [1]
  1. Astronomy Centre, University of Sussex, Falmer, Brighton BN1 9QH (United Kingdom)
Publication Date:
OSTI Identifier:
22381991
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 02; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; COSMOLOGICAL INFLATION; DEGREES OF FREEDOM; LIMITING VALUES

Citation Formats

Regan, Donough, Anderson, Gemma J., Hull, Matthew, and Seery, David, E-mail: D.Regan@sussex.ac.uk, E-mail: G.Anderson@sussex.ac.uk, E-mail: Matthew.Hull@port.ac.uk, E-mail: D.Seery@sussex.ac.uk. Constraining Galileon inflation. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/02/015.
Regan, Donough, Anderson, Gemma J., Hull, Matthew, & Seery, David, E-mail: D.Regan@sussex.ac.uk, E-mail: G.Anderson@sussex.ac.uk, E-mail: Matthew.Hull@port.ac.uk, E-mail: D.Seery@sussex.ac.uk. Constraining Galileon inflation. United States. doi:10.1088/1475-7516/2015/02/015.
Regan, Donough, Anderson, Gemma J., Hull, Matthew, and Seery, David, E-mail: D.Regan@sussex.ac.uk, E-mail: G.Anderson@sussex.ac.uk, E-mail: Matthew.Hull@port.ac.uk, E-mail: D.Seery@sussex.ac.uk. Sun . "Constraining Galileon inflation". United States. doi:10.1088/1475-7516/2015/02/015.
@article{osti_22381991,
title = {Constraining Galileon inflation},
author = {Regan, Donough and Anderson, Gemma J. and Hull, Matthew and Seery, David, E-mail: D.Regan@sussex.ac.uk, E-mail: G.Anderson@sussex.ac.uk, E-mail: Matthew.Hull@port.ac.uk, E-mail: D.Seery@sussex.ac.uk},
abstractNote = {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.},
doi = {10.1088/1475-7516/2015/02/015},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 02,
volume = 2015,
place = {United States},
year = {Sun Feb 01 00:00:00 EST 2015},
month = {Sun Feb 01 00:00:00 EST 2015}
}