Constraining Galileon Inflation
  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. 
Donough Regan, Gemma J. Anderson, Matthew Hull, David Seery
astro-ph.CO