gNLin the curvaton model constrained by PLANCK

2013/03/31 by Qing-Guo Huang
Mathematics · Physics and Astronomy · #Advanced Mathematical Physics Problems #Black Holes and Theoretical Physics #Constraint (computer-aided design) #Cosmology and Gravitation Theories #Extension (predicate logic) #Field (mathematics) #Inflation (cosmology) #Planck #Planck mass #Planck time #Polynomial #astro-ph.CO #hep-ph #hep-th

paper · pdf · doi:10.1088/1475-7516/2013/05/030

9 pages, 3 figures; refs added, version accepted for publication in JCAP

arxiv created 2013/05/15 · openalex publication_date 2013/05/28 · arxiv updated 2015/06/15 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

As a simplest extension to the mass-term curvaton model, the curvaton model with a polynomial potential can relax the restricted constraint from PLANCK due to the non-linear dynamics of curvaton field before it decays. We find that there is still a big room for producing a large negative g NL , but not positive g NL . For example, we only need around 10% ``tuning" for − g NL > 10 4 .

Citations

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• A geometric description of the non-Gaussianity generated at the end of multi-field inflation
• Non-Gaussian features of primordial fluctuations in single field inflationary models
• Signatures of non-Gaussianity in the curvaton model
• A 3% SOLUTION: DETERMINATION OF THE HUBBLE CONSTANT WITH THEHUBBLE SPACE TELESCOPEAND WIDE FIELD CAMERA 3