2005/10/31 by Laila Alabidi, David H Lyth, David Lyth · 3 citations
Engineering · Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Material Science and Thermodynamics #astro-ph
paper · pdf · doi:10.1088/1475-7516/2006/05/016
published as JCAP0605:016,2006 · 18 pages LaTeX, 13 figures
arxiv created 2005/12/01 · openalex publication_date 2006/05/25 · arxiv updated 2015/06/24 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We consider small-field models which invoke the usual framework for the effective field theory, and large-field models which go beyond that. Present and future possibilities for discriminating between the models are assessed, on the assumption that the primordial curvature perturbation is generated during inflation. With PLANCK data, the theoretical and observational uncertainties on the spectral index will be comparable, providing useful discrimination between small-field models. Further discrimination between models may come later through the tensor fraction, the running of the spectral index and non-gaussianity. The prediction for the trispectrum in a generic multi-field inflation model is given for the first time.