Consistency relation for single scalar inflation

2004/06/04 by Andrei Gruzinov · 4 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Solar and Space Plasma Dynamics #astro-ph #hep-th

paper · pdf · doi:10.1103/physrevd.71.027301

published as Phys.Rev. D71 (2005) 027301 · 6 pages

arxiv created 2004/06/04 · openalex publication_date 2005/01/14 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Single scalar field inflation with a generic, nonquadratic in derivatives, field Lagrangian is considered. It is shown that non-Gaussianity of curvature perturbations is characterized by two dimensionless amplitudes. One of these amplitudes can be expressed in terms of the usual inflationary observables---the scalar power, the tensor power, and the tensor index. This consistency relation provides an observational test for the single scalar inflation.

Citations

• The shape of non-Gaussianities
• Non-Gaussian features of primordial fluctuations in single field inflationary models

Cited by

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• Observational signatures and non-Gaussianities of general single-field inflation
• On classification of models of large local-type non-Gaussianity