Detectable primordial non-gaussianities and gravitational waves in k-inflation
arXiv:0712.1713 · doi:10.1103/PhysRevD.76.127302
Abstract
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.
4 pages, 1 figure, REVTEX, to appear in PRD