Ringing Non-Gaussianity from inflation with a step in the second
  derivative of the potential
  Inflationary model driven by a scalar field whose potential has a step in the
second derivative with respect to the field is considered. For the best fit
potential parameter values, the 3-point function and the non-Gaussianity
associated with the featured model is calculated. We study the shape and scale
dependence of the 3-point function. The distinctive feature of this model is
its characteristic ringing behaviour of $f_{NL}$. We can see that the
oscillations in $f_{NL}$ in this model last for a much longer range of k
values, as compared to the previously studied models. In that sense, this model
is potentially distinguishable from models with other features in the
potential.
