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

TL;DR

This paper explores a single-field inflation model with a generalized kinetic term, demonstrating the possibility of large primordial non-Gaussianities and gravitational waves, which could be detectable in future observations.

Contribution

It introduces a simple inflationary model with a non-trivial kinetic term that can produce significant non-Gaussianities and gravitational waves, expanding the landscape of observable inflationary signatures.

Findings

Large primordial non-Gaussianities are achievable.

The model predicts a sizable tensor-to-scalar ratio.

Potential for detection in upcoming observational data.

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.