2002/05/23 by David H. Lyth, Lyth, David H.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #astro-ph #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-ph/0205266
Invited talk at Moriond `The Cosmological Model'. v2 corrects minor typos and alters a few words
arxiv created 2002/06/01 · arxiv updated 2009/11/30
The scale--independence of the primordial curvature perturbation suggests that it comes from the vacuum fluctuation during inflation of a light scalar field. This field may be the inflaton, or a different `curvaton' field. The observation of primordial non--gaussianity would be a smoking gun for the curvaton model, while the observation of gravitational waves originating during slow--roll inflation would rule out the model.