  We argue that in models of inflation with two scalar fields and non-canonical
kinetic terms there is a possibility of obtaining a red tilt of the power
spectrum of curvature perturbations from noncanonicality-induced interactions
between the curvature and isocurvature perturbations. We describe an extremely
simple model realizing this idea, study numerically its predictions for the
perturbations and discuss applications in realistic scenarios of inflation. We
discuss to what extent in this model the scale of the inflationary potential
can be decoupled from the amplitude of the density fluctuations.

High Energy Physics - Theory