Detectable primordial non-gaussianities and gravitational waves in k-inflation

Details Detectable primordial non-gaussianities and gravitational waves in k-inflation Detectable primordial non-gaussianities and gravitational waves in k-inflation

2007-12-11

arxiv.org/abs/0712.1713v1

Phys.Rev.D76:127302,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, REVTEX, to appear in PRD

Scientific paper

10.1103/PhysRevD.76.127302

An inflationary single field model with a non-trivial kinetic term for the inflaton is discussed. It is shown that it is possible to have large primordial non-gaussianities and large tensor-to-scalar ratio in a simple concrete model with just a scalar field and a generalized kinetic term for the inflaton field. This is potentially interesting in the prospect of new forthcoming observations.

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