Consistency relation for single scalar inflation

Details Consistency relation for single scalar inflation Consistency relation for single scalar inflation

2004-06-04

arxiv.org/abs/astro-ph/0406129v1

Phys.Rev. D71 (2005) 027301

Astronomy and Astrophysics

Astrophysics

6 pages

Scientific paper

10.1103/PhysRevD.71.027301

Single scalar field inflation with a generic, non-quadratic 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.

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